FX — explained & updated
Currencies and the foreign-exchange market, explained.
Chart powered by TradingView · open full charts →
Daily updates
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank buys or sells its own currency in the open market whenever supply and demand would otherwise push the price away from the target.
Countries often choose a peg to create stability and predictability for trade and investment. If businesses know that 1 unit of their local currency will always equal, say, a fixed amount of dollars, they can plan imports, exports, and contracts without worrying about sudden exchange-rate swings. Smaller, trade-dependent economies find this especially attractive.
The trade-off is that a peg requires the central bank to hold large foreign currency reserves to defend the rate. If those reserves run thin — or if market pressure becomes overwhelming — the peg can break, sometimes abruptly. Historical examples include the British pound leaving the European Exchange Rate Mechanism in 1992 and the Swiss franc's cap against the euro being abandoned in 2015, both of which caused sharp, sudden currency moves.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank commits to buying or selling its own currency whenever market pressure would push the rate away from that target, keeping the exchange rate stable.
To defend a peg, a central bank needs foreign currency reserves. If demand for the domestic currency falls, the bank sells reserves (like dollars) to buy its own currency back, propping up the price. Conversely, if the currency rises too high, it can sell domestic currency and buy reserves. The size and strength of those reserves largely determines how long a peg can hold under pressure.
Pegs offer businesses and importers predictability — knowing the exchange rate won't shift dramatically makes cross-border contracts easier to plan. The trade-off is that the central bank surrenders some control over its own monetary policy, since interest rate decisions often have to serve the peg rather than purely domestic economic conditions. Countries like Saudi Arabia and Hong Kong maintain well-known pegs to the US dollar, while others use "soft pegs" that allow a narrow band of fluctuation.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar — or occasionally to a basket of currencies or a commodity like gold. The central bank commits to maintaining that fixed rate by intervening in the foreign exchange market whenever needed.
To defend the peg, the central bank buys or sells its own currency using its foreign exchange reserves. If the domestic currency faces selling pressure and starts to weaken, the bank buys it back using reserves, propping the rate up. If it strengthens too much, the bank sells domestic currency to push the rate back down.
Pegs can offer stability and predictability for trade and investment, since businesses know the exchange rate won't fluctuate wildly. However, they require substantial reserves to maintain, and a country must generally align its monetary policy with the country it is pegged to rather than setting policy purely for its own economic conditions. Well-known examples include the Hong Kong dollar, which has been pegged to the US dollar since 1983.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is a policy where a country's central bank sets its currency at a fixed rate against another currency — most commonly the US dollar or euro. Instead of letting the market freely determine the exchange rate, the central bank commits to buying or selling its own currency as needed to keep the rate stable within a very tight band.
To maintain the peg, the central bank must hold large reserves of the foreign currency it is pegged to. If demand for the local currency falls, the bank sells its reserves to buy back the local currency, propping up its value. If demand rises too much, it does the opposite. This requires constant management and a sizeable reserve buffer.
Pegs are used to bring stability to trade and reduce uncertainty for businesses operating across borders. Countries that rely heavily on imports or exports, or those with smaller economies prone to volatility, often find pegs attractive. The trade-off is that the country gives up some control over its own monetary policy, since interest rate decisions must also serve the goal of defending the peg.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is when a country's government or central bank officially ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. The goal is to keep the exchange rate stable and predictable, which can help businesses plan across borders and reduce the risk of sudden currency swings disrupting trade.
To maintain the peg, the central bank must actively intervene in the foreign exchange market. If demand for its currency falls and it starts drifting below the target rate, the central bank buys its own currency using its foreign reserve holdings to prop up the price. If the currency rises above the peg, it sells its own currency to bring it back down. This requires the country to hold significant foreign exchange reserves as a buffer.
Pegs come with trade-offs. They remove the flexibility of letting a currency adjust naturally to economic conditions — something a floating exchange rate does automatically. If a peg becomes unsustainable (for example, because reserves run low or the economy diverges sharply from the anchor country's), it can be abandoned, sometimes abruptly. Notable historical examples include the UK leaving the European Exchange Rate Mechanism in 1992, and Argentina abandoning its dollar peg in 2002.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate relative to another currency — most commonly the US dollar. Rather than letting the market freely determine the exchange rate, the central bank actively buys or sells its own currency to keep the rate stable within a narrow band.
To maintain the peg, the central bank must hold substantial foreign currency reserves. If demand for the local currency falls, the bank sells its reserves to buy the local currency back, propping up its value. If demand rises too high, it does the reverse. This requires constant intervention and a large enough reserve pool to defend the fixed rate against market pressure.
Pegs offer predictability for businesses and traders operating across borders, since they eliminate exchange-rate uncertainty. However, they can come under stress when a country's economic conditions diverge sharply from those of the currency it is pegged to. Historical examples — such as the UK leaving the European Exchange Rate Mechanism in 1992 — illustrate how market forces can overwhelm even well-funded attempts to hold a fixed rate.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate against another currency — most commonly the US dollar or euro. Instead of letting market supply and demand move the exchange rate freely, the central bank actively intervenes, buying or selling its own currency to keep the rate stable within a tight band.
To defend a peg, a central bank needs foreign currency reserves. If its own currency comes under selling pressure, it uses those reserves to buy it back, propping up the rate. If the currency is being bought too aggressively and rising toward the ceiling of the band, the bank sells its own currency to push it back down. This constant management is what distinguishes a peg from a "floating" exchange rate regime.
Pegs offer predictability for businesses and traders conducting cross-border transactions, since exchange-rate uncertainty is reduced. However, they can come under severe stress if a country's economic fundamentals diverge sharply from those of the country it is pegged to, or if speculators bet that the central bank will run out of reserves trying to defend the rate. Historical examples — such as the UK's exit from the European Exchange Rate Mechanism in 1992 — illustrate how dramatic a peg breaking can be.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank actively buys or sells its own currency in the open market whenever supply and demand would otherwise push the price away from the target.
Countries choose pegs for various reasons: reducing exchange-rate uncertainty for businesses and traders, controlling imported inflation, or building credibility for a young or historically volatile currency. Small, trade-dependent economies, like Hong Kong with its long-standing peg to the US dollar, often favour this approach because stable exchange rates make planning and pricing much simpler.
The main trade-off is that a pegged currency requires the central bank to hold large foreign-exchange reserves as ammunition to defend the rate. If reserves run low or markets doubt the government's commitment, the peg can come under intense speculative pressure. When a peg breaks — as happened with the British pound in 1992 — the currency typically moves sharply and quickly to find its new market-determined level.
What Is a Currency Peg — and How Does It Work?
A currency peg is an arrangement in which a country's central bank fixes its exchange rate to another currency (or a basket of currencies) at a set rate. Rather than letting the market freely determine the price of the currency, the central bank commits to buying or selling its own currency as needed to keep the rate stable. The US dollar is the most common anchor currency for pegs worldwide.
To defend a peg, the central bank uses its foreign currency reserves. If demand for the local currency falls and the rate threatens to slip below the target, the bank sells dollars (or other reserve currencies) and buys its own currency to prop up the price. The reverse happens if the local currency strengthens too much. This process means that a country's ability to hold its peg is directly tied to the size of its foreign reserves.
Pegs offer predictability for businesses and investors trading across borders, reducing exchange-rate risk. The trade-off is that the country gives up independent control over monetary policy — interest rates often have to follow the anchor country's lead rather than domestic economic conditions. Notable examples include the Hong Kong dollar, which has been pegged to the US dollar since 1983, and various Gulf Cooperation Council currencies.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate against another currency — most commonly the US dollar or euro. To maintain that rate, the central bank stands ready to buy or sell its own currency whenever market pressure pushes the exchange rate away from the target.
To defend a peg, a central bank relies on its foreign exchange reserves. If traders are selling the local currency, the bank buys it back using those reserves, keeping the rate stable. If the currency is being bought up aggressively, the bank sells more of its own currency into the market. This can work well during normal conditions, but a country with thin reserves can come under intense pressure if markets doubt the peg's durability.
Pegs are used for various reasons: they can reduce exchange-rate uncertainty for businesses and investors, help control inflation, or anchor confidence in a smaller economy's currency. Well-known examples include Hong Kong's long-standing peg to the US dollar and the arrangements many Gulf states maintain. The trade-off is that the pegging country typically gives up independent control of its own interest rates, since policy must prioritize defending the fixed rate.
What Is a Currency Peg, and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. Instead of letting the market freely set the exchange rate, the central bank commits to maintaining a specific rate or a narrow band around it.
To defend the peg, the central bank actively intervenes in the foreign exchange market. If its own currency weakens toward the edge of the allowed band, it buys its own currency using foreign reserves to push the price back up. If the currency strengthens too much, it sells its own currency. This means a country needs to hold substantial foreign exchange reserves to make the commitment credible.
Pegs offer predictability for businesses and traders — importers and exporters know roughly what exchange rate to expect, which simplifies planning and pricing. The trade-off is that the central bank loses some independence over monetary policy, since interest rate decisions must also help maintain the peg rather than focusing solely on domestic economic conditions. Well-known examples of pegged currencies include the Hong Kong dollar, which has been pegged to the US dollar since 1983.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is when a country's central bank officially ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank then buys or sells its own currency on the open market whenever needed to keep the exchange rate from drifting away from that target.
To defend the peg, the central bank must hold substantial foreign currency reserves. If the local currency comes under selling pressure, the bank uses those reserves to buy it back, supporting the price. If demand pushes the currency too high, the bank sells it and accumulates more reserves. This constant management is what distinguishes a peg from a freely floating exchange rate.
Well-known examples include the Hong Kong dollar, which has been pegged to the US dollar within a narrow band since 1983, and several Gulf currencies tied to the dollar. Pegs offer businesses and traders predictability when pricing cross-border transactions, but they also require the central bank to subordinate some of its domestic monetary policy to the task of maintaining that fixed rate.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. The central bank commits to buying or selling its own currency at a set rate to maintain that fixed price.
To defend the peg, the central bank uses its foreign currency reserves. If demand for the local currency falls and its value threatens to drop below the pegged rate, the bank steps in and buys local currency using those reserves, propping the price back up. If the currency strengthens too much, it does the opposite.
Pegs offer predictability for trade and investment, because businesses know what exchange rate to expect. However, they require large reserve holdings and can come under intense pressure if markets doubt the country's ability to defend the rate. Notable historical examples include Hong Kong's long-standing peg to the US dollar and the dramatic collapse of Argentina's peg in 2001-2002.
What Is a "Pip" and Why Does It Matter in FX?
In foreign exchange markets, a "pip" stands for "percentage in point" (sometimes "price interest point"). It is the smallest standardized unit of movement in an exchange rate quote. For most currency pairs, one pip equals a move of 0.0001 — that is, the fourth decimal place. So if EUR/USD moves from 1.0850 to 1.0851, it has moved exactly one pip.
The exception worth knowing is the Japanese yen. Because the yen trades at a much lower numerical value against other currencies, its pairs are quoted to only two decimal places, meaning one pip equals 0.01 rather than 0.0001. For example, a move in USD/JPY from 149.50 to 149.51 is one pip.
Pips matter because they give traders and analysts a universal, currency-neutral language for describing how much an exchange rate has moved. Instead of saying "the euro rose by 0.0050 against the dollar," market participants simply say it moved "50 pips." This standardization makes it easier to compare volatility across different currency pairs and to calculate the value of a given move based on position size.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank commits to buying or selling its own currency as needed to keep the exchange rate at that fixed level, rather than letting it float freely with market forces.
To maintain a peg, a central bank must hold large reserves of the anchor currency. If market pressure pushes its own currency lower, it spends those reserves to buy its currency back up. If pressure pushes it higher, it sells its own currency into the market. This constant management is what distinguishes a pegged system from a freely floating one.
Some well-known examples include the Hong Kong dollar, which has been pegged to the US dollar since 1983, and several Gulf Cooperation Council currencies such as the Saudi riyal. Pegs can offer stability and predictability for trade and investment, but they also require significant reserve management and can come under intense pressure if markets doubt a country's ability to maintain them.
What Is a Currency "Peg" and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank officially ties its currency's value to another currency — most commonly the US dollar — at a set rate. Instead of letting the market determine the exchange rate freely, the central bank commits to buying or selling its own currency whenever necessary to keep the rate stable near that target.
To maintain the peg, the central bank uses its foreign currency reserves as a buffer. If demand for the local currency falls and the rate starts to slip, the bank sells dollars (or whichever anchor currency it holds) and buys its own currency to prop up the price. If the local currency strengthens too much, it does the reverse. This requires holding large reserves and active management.
Pegs offer businesses and importers predictability — cross-border contracts and pricing become more straightforward when the exchange rate is stable. The trade-off is that the country surrenders some control over its own monetary policy, since interest rate decisions often have to serve the peg rather than purely domestic economic needs. Well-known examples include the Hong Kong dollar, which has been pegged to the US dollar since 1983, and several Gulf currencies tied to the dollar through their central banks.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate against another currency — most commonly the US dollar or euro. Instead of letting the market freely determine the exchange rate, the central bank commits to buying or selling its own currency whenever needed to keep the rate steady.
To defend the peg, the central bank uses its foreign exchange reserves. If its currency starts to weaken toward the pegged level, it buys its own currency using those reserves, pushing the price back up. If the currency strengthens too much, it sells its own currency to bring it back down. This constant management requires holding large amounts of reserve currency.
Pegs offer predictability — businesses and governments know exactly what an exchange rate will be, which simplifies trade and borrowing. The trade-off is that the country gives up some control over its own monetary policy, since interest rate decisions often have to serve the peg rather than domestic economic goals. Well-known examples include the Hong Kong dollar, which has been pegged to the US dollar since 1983.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. Instead of letting the market freely determine the exchange rate, the central bank steps in to buy or sell its own currency whenever the rate drifts away from the target.
To maintain a peg, a country needs foreign exchange reserves — stockpiles of the anchor currency (like dollars) held by the central bank. If its own currency weakens toward the peg boundary, the bank sells reserves to buy its currency back up. If the currency strengthens too much, it sells its own currency to push the rate back down.
Pegs offer stability and predictability, which can be valuable for trade and business planning. However, they require a country to continuously defend the rate using reserves, and if those reserves run low or market pressure becomes intense, the peg can break — sometimes abruptly. Historical examples include the British pound's exit from the European Exchange Rate Mechanism in 1992 and the Swiss franc's sudden de-pegging from the euro in 2015.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank commits to buying or selling its own currency whenever needed to defend that rate, keeping it stable rather than letting it float freely in the market.
To maintain the peg, the central bank must hold large reserves of the anchor currency. If market pressure pushes the domestic currency away from the target rate, the bank intervenes directly: selling reserves to buy its own currency (if it's weakening) or doing the reverse if it's strengthening too much. Countries like Saudi Arabia and the UAE have long maintained pegs to the US dollar this way.
The trade-off is significant. A peg offers predictability for trade and investment — businesses know what exchange rates to plan around — but it removes monetary policy flexibility. The country effectively "imports" the interest rate policy of whoever issues the anchor currency, and if reserves run dry, defending the peg can become impossible, sometimes leading to abrupt devaluations.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate against another currency — most commonly the US dollar or euro. Instead of letting the market determine the exchange rate freely, the central bank commits to buying or selling its own currency whenever needed to keep the rate at the agreed level.
To maintain the peg, the central bank must hold large foreign currency reserves. If demand for the domestic currency falls, the bank uses those reserves to buy it back, supporting the price. If demand rises too much, it sells domestic currency into the market. This constant intervention is what keeps the rate stable.
Pegs offer predictability for businesses and trade partners — everyone knows what the exchange rate will be. However, they require discipline: the country must keep enough reserves and often align its interest rate policy with the currency it is pegged to. If reserves run low or confidence fades, a peg can come under severe pressure, which is why some countries instead choose a "crawling peg" (a rate that adjusts gradually) or a managed float that allows limited flexibility.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is when a country's central bank ties the value of its currency to another currency — most commonly the US dollar — at a set rate. Instead of letting the market freely determine the exchange rate, the central bank commits to buying or selling its own currency whenever necessary to keep the rate stable at that target.
To defend the peg, the central bank uses its foreign currency reserves as a buffer. If demand for the local currency falls and the rate starts to slip, the bank sells dollars (or euros, etc.) and buys back its own currency to prop up its value. If the currency rises too much, it does the opposite. Countries like Saudi Arabia and Hong Kong are well-known examples of economies that maintain pegs to the US dollar.
Pegs offer predictability for businesses and traders — import and export costs are easier to plan when exchange rates don't fluctuate. The trade-off is that the central bank loses some independence over monetary policy, since its primary obligation becomes defending the rate rather than responding freely to domestic economic conditions.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank buys or sells its own currency in the open market whenever the exchange rate drifts from the target.
For example, if a country pegs its currency at 3.75 units per US dollar, and market pressure pushes it toward 3.80, the central bank will buy its own currency (using foreign exchange reserves) to bring the rate back down. The system gives businesses and importers predictability, since they know the exchange rate won't fluctuate day to day.
The trade-off is that maintaining a peg can be costly. A central bank must hold large reserves of the anchor currency to defend the peg during periods of pressure. If reserves run low and confidence falls, the peg can break — a dramatic event known as a currency crisis. Notable historical examples include the British pound's exit from the European Exchange Rate Mechanism in 1992 and Argentina's dollar peg collapse in 2001.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain this rate, the central bank actively buys or sells its own currency in the open market whenever supply and demand would otherwise push the price away from the target.
Countries choose pegs for several reasons: they can reduce exchange-rate uncertainty for businesses and trade partners, help control inflation by anchoring expectations, and attract foreign investment. Smaller, trade-dependent economies — such as those in the Gulf Cooperation Council — have historically used dollar pegs for exactly these reasons.
The trade-off is that a pegged country gives up independent monetary policy. If the anchor currency's interest rates move, the pegging country often must follow suit to defend the peg, even if that doesn't suit its own economic conditions. Sustaining a peg also requires holding large foreign-exchange reserves, and if markets believe a peg is unsustainable, speculative pressure can force a sudden devaluation — a lesson illustrated by the 1992 crisis that broke the British pound out of Europe's Exchange Rate Mechanism.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar or euro — at a set rate. Instead of letting the market freely determine the exchange rate, the central bank intervenes by buying or selling its own currency to keep the rate within a narrow band.
To maintain the peg, the country must hold large reserves of the anchor currency. If demand for the domestic currency falls, the central bank sells its reserves to buy the local currency back, propping up its value. If demand rises too much, it does the opposite. Countries like Saudi Arabia and the United Arab Emirates operate well-known dollar pegs, while smaller nations often peg to regional anchor currencies.
The trade-off is significant: a peg offers exchange-rate stability, which helps businesses plan and reduces inflation imported through volatile currency swings. However, it surrenders monetary policy independence — the central bank cannot freely set interest rates for domestic economic conditions because it must prioritise defending the fixed rate. When reserves run low or economic pressures become severe, pegs can break dramatically, as happened with the British pound exiting the European Exchange Rate Mechanism in 1992.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is when a country's government or central bank officially ties the value of its currency to another currency — most commonly the US dollar — at a set rate. For example, a country might declare that one unit of its currency always equals exactly 0.27 US dollars. The goal is to create stability and predictability for traders, businesses, and investors who deal across borders.
To maintain the peg, the central bank must actively manage it. If market forces push the local currency's value away from the target rate, the central bank intervenes — buying or selling its own currency, or drawing on its foreign exchange reserves, to pull the rate back in line. This requires holding substantial reserves of the anchor currency (often dollars) to have enough firepower to defend the peg under pressure.
Pegs come with real trade-offs. They can reduce exchange-rate uncertainty and help control inflation, but they also mean the country surrenders some control over its own monetary policy, since interest rates often have to be adjusted to defend the peg rather than to serve the domestic economy. Some pegs hold for decades; others break dramatically if reserves run out or market pressure becomes overwhelming — a moment sometimes called a "peg collapse."
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank stands ready to buy or sell its own currency in the open market whenever the exchange rate drifts from the target.
Pegs offer predictability for businesses and traders, since companies importing or exporting goods can plan without worrying about sudden exchange rate swings. Countries with smaller or less stable economies often use pegs to borrow credibility from a stronger currency and keep inflation in check.
The challenge is that maintaining a peg requires holding large reserves of the anchor currency. If a country's reserves run low, or if market pressure becomes overwhelming, the peg can break — sometimes abruptly. Historical examples include the British pound's exit from the European Exchange Rate Mechanism in 1992 and Argentina's dollar peg collapse in 2001, both of which became landmark events in FX history.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank stands ready to buy or sell its own currency whenever market pressure pushes the exchange rate away from the target.
Pegs offer predictability for businesses and traders operating across borders, since exchange rate uncertainty is removed or greatly reduced. Countries with large volumes of trade or debt denominated in a foreign currency often find a peg attractive because it shields them from sudden swings.
The trade-off is that maintaining a peg requires the central bank to hold large reserves of the anchor currency. If those reserves run low — or if markets believe the peg is unsustainable — speculative pressure can force a devaluation or outright abandonment of the peg. Historical examples include the UK's exit from the European Exchange Rate Mechanism in 1992 and Argentina's break from its dollar peg in 2002.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is a policy where a country's central bank officially ties its currency's value to another currency — most commonly the US dollar — at a set rate. Instead of letting the market freely determine the exchange rate, the central bank commits to buying or selling its own currency whenever needed to keep the rate stable near that target.
To defend the peg, the central bank uses its foreign-exchange reserves. If demand for the local currency falls and it starts to weaken, the bank sells dollars (or whichever anchor currency it holds) and buys back its own currency to prop up the price. If the local currency strengthens too much, it does the opposite. This constant intervention is what separates a pegged system from a freely floating one.
Pegs offer predictability for businesses and traders — importers and exporters can plan without worrying about sudden exchange-rate swings. The trade-off is that the country gives up some monetary-policy independence, since interest-rate decisions must partly serve the goal of defending the peg rather than solely responding to domestic economic conditions. Well-known examples include Hong Kong's long-standing peg to the US dollar and several Gulf states that anchor their currencies to the dollar as well.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank stands ready to buy or sell its own currency whenever market forces push the exchange rate away from the target.
Maintaining a peg requires holding large reserves of the anchor currency. If demand for the domestic currency falls, the central bank sells its reserves to buy the domestic currency back, propping up its value. Conversely, if the domestic currency is in high demand, the bank sells its own currency and buys reserves to prevent the rate from rising above the peg.
Pegs offer businesses and importers predictability, since exchange rate uncertainty is eliminated. However, they can be difficult to defend if reserve levels run low or if economic conditions diverge sharply between the two countries. Some countries use a middle-ground approach called a "managed float" or a "crawling peg," where the rate is officially flexible but is guided within a narrow target band by regular central bank intervention.
What Is a "Pip" in Foreign Exchange Trading?
A "pip" — short for "percentage in point" — is the standard unit used to measure the change in value between two currencies. For most currency pairs, one pip equals a move of 0.0001, or one ten-thousandth of the quoted price. For example, if the EUR/USD rate moves from 1.0850 to 1.0851, that is a one-pip move.
The exception to the 0.0001 rule involves currency pairs that include the Japanese yen. Because the yen is quoted at a much lower numerical value, yen-based pairs (such as USD/JPY) are typically quoted to only two decimal places, so one pip equals 0.01 rather than 0.0001.
Pips matter because they give market participants a consistent, universal language for describing how much an exchange rate has moved, regardless of the actual currencies involved. They are also used to calculate the spread — the difference between the price a dealer will buy a currency and the price at which they will sell it — which is a key cost built into every currency transaction.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank stands ready to buy or sell its own currency in the open market whenever supply and demand would otherwise push the exchange rate away from the target.
To keep the peg stable, a country typically holds large reserves of the anchor currency (for example, US dollars). If its own currency comes under selling pressure, the central bank sells dollars and buys its own currency to prop up the rate. If the currency is being bought too aggressively, it does the opposite. The size of those reserves is a key indicator of how comfortably a peg can be defended.
Pegs offer predictability for businesses and reduce exchange-rate risk in trade — but they come with trade-offs. A country surrenders some control over its own monetary policy, because interest rates often need to move in sync with the anchor country's rates rather than to suit domestic economic conditions. Well-known examples of pegged currencies include the Hong Kong dollar (pegged to the USD since 1983) and several Gulf state currencies.
What Is a "Pip" and Why Does It Matter in FX?
In foreign exchange markets, a "pip" (short for "percentage in point" or "price interest point") is the smallest standardized unit of price movement for a currency pair. For most pairs, such as EUR/USD or GBP/USD, one pip equals a move of 0.0001 — that is, the fourth decimal place. So if EUR/USD moves from 1.0850 to 1.0851, the rate has risen by exactly one pip.
The concept exists because currency pairs are quoted with great precision, and traders, banks, and businesses need a common language to describe price changes clearly. Rather than saying a rate moved "0.0001," market participants simply say it moved "one pip," making communication faster and less prone to error across dealing desks worldwide.
Pips also become the building block for calculating profit, loss, and transaction costs. A broker's "spread" — the difference between the buy and sell price — is typically expressed in pips. Because currency trades often involve large notional amounts, even a small number of pips can represent a meaningful sum in absolute terms, which is why precision at the fourth decimal place carries real practical importance.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is when a country's central bank officially ties the value of its currency to another currency — most commonly the US dollar or euro. Instead of letting the market freely determine the exchange rate, the central bank commits to buying or selling its own currency at a specific, predetermined rate to keep the price stable.
To defend a peg, the central bank uses its foreign currency reserves as a tool. If demand for the local currency falls and it starts to slip below the target rate, the bank sells dollars (or whichever anchor currency it holds) and buys back its own currency to prop up the price. The reverse happens if the currency rises above the peg.
Pegs offer businesses and governments predictability — importers and exporters know what exchange rate to plan around. The trade-off is that the central bank loses some control over its own monetary policy, since keeping the peg takes priority. If reserves run low and the peg becomes hard to defend, countries can face a sudden, sharp devaluation — a so-called "peg break," which history shows can have significant economic consequences.
What Is a "Pip" in Foreign Exchange Trading?
A "pip" — short for "percentage in point" or "price interest point" — is the standardized unit used to measure how much an exchange rate has moved. For most currency pairs, one pip equals a movement of 0.0001, or one ten-thousandth, in the quoted price. So if the EUR/USD rate moves from 1.0850 to 1.0855, that is a move of five pips.
The exception to the 0.0001 rule involves currency pairs that include the Japanese yen. Because the yen is quoted to only two decimal places (for example, USD/JPY at 149.50), one pip for yen pairs equals 0.01 rather than 0.0001.
Pips matter because they give traders and analysts a consistent, currency-neutral language for describing exchange rate changes. Rather than comparing raw decimal moves across dozens of different pairs, everyone can simply say a rate moved "20 pips" and immediately understand the scale of the change. Many brokers also quote prices to an extra decimal place — called a "pipette" or fractional pip — giving an even finer level of precision.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. Instead of letting the market decide the exchange rate freely, the central bank commits to maintaining a specific rate or a narrow band around it.
To defend the peg, the central bank buys or sells its own currency in the foreign exchange market as needed. If the domestic currency comes under pressure to weaken, the bank sells foreign reserves to buy its own currency, propping the rate back up. If the currency strengthens too much, it does the opposite. This requires holding substantial foreign exchange reserves as a buffer.
Pegs offer predictability — businesses and traders know what exchange rate to expect, which can simplify cross-border contracts and reduce uncertainty. The trade-off is that the country surrenders some monetary policy flexibility, since interest rate decisions must partly serve the goal of defending the peg rather than responding purely to domestic economic conditions. Well-known examples of pegged currencies include the Hong Kong dollar, which has been pegged to the US dollar since 1983.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. The government or central bank commits to maintaining that fixed rate by actively intervening in the foreign exchange market whenever the rate drifts.
To defend a peg, the central bank buys or sells its own currency using foreign exchange reserves. If the domestic currency is weakening toward the lower boundary of the peg, the central bank buys it back using reserves, reducing supply and pushing the price up. If the currency is strengthening too much, the bank sells more of it into the market.
The tradeoff is significant: a peg offers businesses and traders predictability in cross-border transactions, which can encourage trade and investment. However, it requires the country to hold large reserves and limits its ability to set independent monetary policy. If reserves run low or the peg becomes misaligned with economic reality, it can come under intense speculative pressure — a dynamic that has historically led to dramatic currency crises around the world.
What Is a Currency Peg, and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank commits to buying or selling its own currency whenever necessary to keep the rate from drifting away from that target.
To maintain the peg, the central bank must hold large reserves of the anchor currency. If demand for the local currency falls, the bank sells its reserves to buy the local currency back, propping up its value. If demand rises too much, it does the opposite. This constant intervention is what separates a pegged system from a freely floating one, where the market alone sets the rate.
Pegs offer predictability for businesses and traders — importers and exporters can plan without worrying about sudden exchange-rate swings. The tradeoff is that the central bank gives up some control over its own monetary policy, since keeping the peg takes priority. Notable examples of pegged currencies today include the Hong Kong dollar, which has been tied to the US dollar since 1983, and several Gulf state currencies.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank commits to buying or selling its own currency at that fixed rate to maintain the peg, rather than letting market supply and demand freely set the price.
To defend a peg, a central bank needs adequate foreign exchange reserves. If demand for the local currency falls, the bank sells its reserve dollars (or other currencies) to buy up its own currency, keeping the rate stable. If the local currency is in high demand, it does the opposite. The larger and more credible the reserves, the more resilient the peg.
Pegs offer predictability for trade and investment — businesses know the exchange rate won't swing wildly. The trade-off is that the country surrenders some control over its own monetary policy, since interest rate decisions often have to support the peg rather than purely domestic economic goals. Countries like Saudi Arabia and Hong Kong are well-known examples of economies that maintain long-standing pegs to the US dollar.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank stands ready to buy or sell its own currency whenever market pressure would otherwise push the exchange rate away from the target.
To keep the peg stable, the central bank needs reserves of the anchor currency (like dollars) to defend it. If traders sell the local currency heavily, the bank buys it back using those reserves. If demand for the local currency is too strong, the bank sells more of it. This constant management is what distinguishes a peg from a freely floating currency, which simply moves wherever supply and demand take it.
Well-known examples of pegged currencies include the Hong Kong dollar, which has been tied to the US dollar since 1983 within a tight band, and several Gulf currencies such as the Saudi riyal. Pegs can offer price stability and predictability for trade and investment, but they also require large reserve holdings and limit a central bank's ability to set interest rates independently — a trade-off economists call the "impossible trinity."
What Is a Currency "Peg" and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank officially ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. The central bank commits to buying or selling its own currency at a set rate to maintain that fixed price in the market.
To defend the peg, the central bank uses its foreign exchange reserves. If market pressure pushes the currency below the target rate, the bank sells its reserves of the anchor currency and buys its own currency to prop up the price. If pressure goes the other way, it does the opposite. Countries like Saudi Arabia and the UAE have maintained long-running pegs to the US dollar this way.
Pegs can offer stability and predictability for trade and investment, since businesses know the exchange rate won't fluctuate wildly. The trade-off is that the country gives up independent control over monetary policy — interest rates often have to move in line with the anchor country's rates to keep the peg credible. When reserves run low or market pressure becomes overwhelming, pegs can break dramatically, which is why currency crises often involve a collapsing fixed-rate arrangement.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's government or central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. Instead of letting the market freely determine the exchange rate, the authorities commit to buying or selling their own currency whenever needed to keep it trading at that fixed level.
To defend the peg, a central bank must hold large reserves of the anchor currency (usually dollars). If demand for the local currency falls, the bank spends those reserves to buy it back, supporting the price. If demand rises too much, it sells more of its own currency into the market. Countries like Saudi Arabia and the United Arab Emirates maintain long-standing pegs to the US dollar this way.
The trade-off is significant: a pegged country essentially imports the monetary policy of the anchor country. If the US Federal Reserve raises interest rates, a dollar-pegged nation often feels pressure to follow suit to prevent capital from flowing out and breaking the peg. This limits how independently a government can manage its own economy — which is why some countries choose a free float instead, letting markets set the rate.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank commits to buying or selling its own currency whenever needed to keep the exchange rate stable near that target.
To defend a peg, a central bank uses its foreign-exchange reserves. If market pressure pushes the currency below the pegged rate, the bank sells dollars (or whichever anchor currency it holds) and buys its own currency to prop it up. If pressure goes the other way, it does the opposite. This requires holding large reserves as a buffer.
Pegs offer predictability for businesses and traders operating across borders, since exchange-rate uncertainty is removed. The trade-off is that the country surrenders some control over its own monetary policy — interest rate decisions, for example, often have to align with the anchor country rather than purely domestic needs. Well-known examples include the Hong Kong dollar, which has been pegged to the US dollar since 1983.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. Instead of letting the market freely determine the exchange rate, the central bank commits to buying or selling its own currency to keep the rate stable.
To maintain the peg, the central bank must hold large reserves of the anchor currency. If demand for the domestic currency falls, the bank sells its reserves to buy its own currency back, propping up the value. If demand rises too high, it does the opposite. This constant management is what makes pegs resource-intensive to defend.
Pegs offer predictability for trade and investment — businesses know what exchange rate to plan around. However, they also limit a country's monetary policy freedom, since interest rate decisions must partly serve the goal of defending the peg rather than purely managing the domestic economy. Some countries opt for a "managed float" instead, which is a softer middle ground where the rate can move within a defined band.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate relative to another currency — most commonly the US dollar or euro. Instead of letting the market freely determine the exchange rate, the central bank actively buys or sells its own currency to keep the rate within a narrow, predetermined band.
To maintain a peg, the central bank must hold large reserves of the foreign currency it is pegged to. If the domestic currency starts to weaken, the bank sells its reserves to buy the domestic currency back, propping up its value. If it strengthens too much, the bank does the opposite. This requires constant management and sufficient reserve holdings.
Well-known examples include the Hong Kong dollar, which has been pegged to the US dollar since 1983, and several Gulf currencies pegged to the dollar as well. Pegs offer businesses and importers predictability when planning cross-border transactions, but they can also create pressure on a country's economy if the chosen rate drifts far from where market forces would otherwise set it.
What Is a Currency Peg, and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank commits to keeping its currency at a set rate against another currency — most commonly the US dollar or euro. To maintain this rate, the central bank buys or sells its own currency in the open market whenever supply and demand would otherwise push the exchange rate away from the target.
Countries often choose a peg to bring stability to trade and foreign investment. If businesses know the exchange rate won't fluctuate wildly, they can price contracts and plan budgets with more confidence. Smaller, trade-dependent economies, or those with histories of high inflation, have historically found pegs attractive for this reason.
The trade-off is that a peg requires the central bank to hold large reserves of foreign currency to defend it. If speculators or market forces bet heavily against the peg, those reserves can drain quickly. History has several famous examples — such as the British pound leaving the European Exchange Rate Mechanism in 1992 — where a peg eventually became too costly to maintain and was abandoned.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate against another currency — most commonly the US dollar. Instead of letting the market determine the exchange rate freely, the central bank commits to buying or selling its own currency whenever necessary to keep the rate stable within a tight band.
To defend the peg, the central bank uses its foreign exchange reserves. If demand for the local currency falls and it starts to weaken, the bank sells dollars (or whichever anchor currency it holds) and buys local currency to prop the rate back up. The reverse happens if the currency gets too strong. This is why countries with pegs typically maintain large reserve stockpiles.
Pegs offer predictability for businesses and traders — import and export costs become easier to plan when the exchange rate doesn't fluctuate. The trade-off is that the country gives up some control over its own monetary policy, since interest rate decisions must partly serve the goal of keeping the peg intact rather than responding freely to domestic economic conditions. Well-known examples of pegged currencies include the Hong Kong dollar (pegged to the USD) and several Gulf state currencies.
What Is a Currency Peg, and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank commits to keeping its currency at a set rate against another currency — most commonly the US dollar or euro. To hold that rate steady, the central bank stands ready to buy or sell its own currency whenever market pressure would otherwise push the rate off target.
Maintaining a peg requires holding large reserves of the anchor currency. If traders sell the local currency heavily, the central bank uses those reserves to buy it back and defend the fixed rate. If the local currency is in high demand, the bank sells more of it to prevent appreciation. This constant intervention is what separates a pegged system from a floating one, where supply and demand alone set the rate.
Pegs offer predictability for businesses and importers, reducing the uncertainty that comes with fluctuating exchange rates. The trade-off is that the country surrenders some monetary independence — its interest rate policy often has to align with whatever keeps the peg credible. Well-known examples include Hong Kong's long-standing peg to the US dollar and several Gulf states that tie their currencies to the dollar through their oil-driven economies.
What Is a "Pip" and Why Does It Matter in FX?
In foreign exchange markets, a "pip" (short for "percentage in point" or "price interest point") is the smallest standardized unit of movement in a currency pair's exchange rate. For most major pairs — such as EUR/USD or GBP/USD — a pip is the fourth decimal place, or 0.0001. So if EUR/USD moves from 1.0850 to 1.0851, it has moved one pip.
The concept exists because currency pairs are quoted with great precision, and traders, analysts, and banks need a consistent way to measure and communicate price changes. Rather than saying a rate moved "0.0001," market participants simply say it moved "one pip," which keeps communication clear and standardized across institutions worldwide.
The actual monetary value of a pip depends on the trade size (called a "lot") and the currency pair involved. In a standard lot of 100,000 units of the base currency, one pip in a USD-quoted pair is typically worth around $10. Smaller lot sizes — mini lots and micro lots — reduce that value proportionally. Understanding pip values helps anyone reading FX data grasp how rate movements translate into real-world differences in cross-border transactions, pricing, and currency conversions.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate against another currency — most commonly the US dollar or euro. To maintain that rate, the central bank stands ready to buy or sell its own currency using its foreign reserves whenever market pressure would otherwise push the exchange rate away from the target.
Saudi Arabia's riyal, for example, has been pegged to the US dollar at roughly 3.75 riyals per dollar for decades. This predictability can reduce exchange-rate risk for businesses and encourage trade and investment, since importers and exporters don't have to worry about sudden swings in the rate.
The trade-off is that the central bank gives up an important tool: it can no longer set interest rates freely for domestic economic reasons, because rates must stay aligned with the anchor currency to defend the peg. If foreign reserves run low and the peg becomes hard to defend, the country may be forced into a sharp, sudden devaluation — which is why currency crises often center on pegged regimes under stress.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank commits to keeping its currency at a set value relative to another currency — most commonly the US dollar. To maintain that fixed rate, the central bank stands ready to buy or sell its own currency whenever market pressure would otherwise push the rate away from the target.
Pegs are common in smaller or export-dependent economies because they reduce exchange-rate uncertainty for businesses and traders. For example, the Hong Kong dollar has been pegged to the US dollar in a narrow band since 1983, giving importers and exporters a predictable rate to plan around.
The main cost of a peg is that it limits monetary policy independence. If the anchor currency rises or falls sharply, the pegging country must follow along, even if domestic economic conditions call for a different interest-rate policy. Defending a peg also consumes foreign-exchange reserves, so countries must hold large stockpiles of the anchor currency to keep the system credible.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. The central bank commits to maintaining that fixed rate by buying or selling its own currency in the open market whenever the exchange rate drifts away from the target.
To defend a peg, a country needs foreign exchange reserves. If its currency weakens toward the peg's lower limit, the central bank sells dollars (or whichever anchor currency it holds) and buys its own currency to prop the rate back up. If the currency strengthens too much, it does the opposite. The size of those reserves largely determines how long a peg can be sustained under pressure.
Pegs offer predictability for businesses and traders because exchange rate risk is reduced, making cross-border pricing and contracts easier to plan. The trade-off is that the country surrenders some control over its own monetary policy — interest rate decisions often have to follow the anchor currency's central bank rather than domestic economic needs. Well-known examples of pegged currencies include the Hong Kong dollar, which has been pegged to the US dollar since 1983.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. Instead of letting the market determine the exchange rate freely, the central bank commits to maintaining a specific rate or a narrow band around it.
To defend the peg, the central bank must actively intervene in the foreign exchange market. If demand for the domestic currency falls and it risks dropping below the fixed rate, the bank sells its foreign currency reserves to buy the domestic currency back up. Conversely, if the domestic currency strengthens too much, the bank buys foreign currency to push the rate back down. This requires holding substantial reserves, usually in the anchor currency.
Pegs offer predictability for trade and investment, since businesses know what exchange rate to expect. However, they come with trade-offs: a country essentially surrenders independent control over its monetary policy, because interest rate decisions must often prioritize defending the peg rather than managing domestic economic conditions. Historical examples of pegs include Hong Kong's long-standing link to the US dollar and, famously, the pound's brief and turbulent peg within Europe's Exchange Rate Mechanism in the early 1990s.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate against another currency — most commonly the US dollar or euro. To maintain that rate, the central bank buys or sells its own currency in the open market whenever supply and demand would otherwise push the exchange rate away from the target.
For example, if a country pegs its currency at 7.80 units per US dollar, the central bank must intervene whenever the rate drifts. If the local currency weakens toward 7.85, the bank spends its foreign currency reserves to buy the local currency back up. If it strengthens toward 7.75, the bank sells local currency to push it back down.
Pegs offer businesses and traders predictability — import and export prices stay stable, which can encourage trade and investment. The trade-off is that the central bank surrenders some control over its own monetary policy, since interest rate decisions must partly serve the goal of defending the peg rather than purely managing the domestic economy. Countries with large foreign currency reserves are generally better equipped to sustain a peg over the long term.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank commits to buying or selling its own currency whenever necessary to keep the exchange rate at that fixed level, rather than letting it float freely on the open market.
To defend the peg, the central bank must hold enough foreign currency reserves to absorb any imbalance between supply and demand. If traders are selling the local currency heavily, the bank steps in and buys it using those reserves, keeping the rate stable. If reserves run low, maintaining the peg becomes very difficult.
Pegs offer predictability for businesses and traders — import and export prices stay consistent, which can help reduce uncertainty in trade and contracts. The trade-off is that the country gives up the ability to set monetary policy independently, since interest rates often have to be adjusted to defend the rate rather than to manage the domestic economy. Well-known examples of pegged currencies include the Hong Kong dollar, which has been pegged to the US dollar since 1983.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate relative to another currency — most commonly the US dollar or euro. Instead of letting the market freely determine the exchange rate, the central bank commits to buying or selling its own currency whenever needed to keep the rate stable within a narrow band.
To defend a peg, the central bank uses its foreign exchange reserves. If market pressure pushes the currency below the target rate, the bank sells foreign currency and buys its own to prop it up. If the currency rises above the target, it does the reverse. This means a country's ability to maintain a peg depends heavily on how large its reserve stockpile is.
Pegs offer predictability for businesses and traders — importers and exporters know what exchange rate to plan around. The trade-off is that the country surrenders some control over its own monetary policy, since interest rate decisions must often serve the peg rather than purely domestic economic goals. Well-known examples of pegged currencies include the Hong Kong dollar (pegged to the USD) and several Gulf state currencies.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate against another currency — most commonly the US dollar or euro. Instead of letting market supply and demand freely determine the exchange rate, the central bank commits to buying or selling its own currency whenever necessary to keep the rate stable.
To maintain the peg, the central bank needs foreign currency reserves as a buffer. If its own currency starts to weaken, it sells those reserves to buy its currency back, propping the rate up. If the currency strengthens too much, it does the opposite. Countries like Saudi Arabia and the United Arab Emirates operate well-known pegs against the US dollar.
Pegs offer predictability for businesses and traders — import and export prices stay more stable, and cross-border contracts are easier to price. The trade-off is that the central bank surrenders some control over its own monetary policy, since keeping the peg often takes priority over other economic goals like adjusting interest rates freely. When reserves run low, maintaining a peg can become very difficult, which is why some countries eventually abandon them.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. The central bank commits to buying or selling its own currency at a set rate to maintain that fixed price in the market.
To defend the peg, the central bank uses its foreign exchange reserves. If market pressure pushes the currency below the target rate, it buys its own currency (spending reserves) to prop the value back up. If the currency rises above the target, it sells its own currency to bring it back down. This constant intervention is what distinguishes a peg from a freely floating exchange rate.
Pegs offer predictability for businesses and traders — importers and exporters can plan without worrying about large exchange rate swings. The trade-off is that the central bank surrenders some control over domestic monetary policy, since keeping the peg becomes a primary obligation. Countries with thin reserves can come under intense speculative pressure if markets doubt their ability to maintain the fixed rate, which is why peg arrangements are watched closely by economists and analysts worldwide.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a specific rate against another currency — most commonly the US dollar or euro. Instead of letting the market freely determine the exchange rate, the central bank actively buys or sells its own currency to keep the rate within a narrow target band.
To maintain the peg, the central bank needs adequate foreign currency reserves. If demand for the local currency falls, the bank spends those reserves buying it back up to the target rate. If demand rises too high, it sells more of the local currency into the market. Countries like Saudi Arabia and the UAE have long maintained pegs to the US dollar, while others use a looser "managed float" that allows limited movement within a set range.
Pegs offer businesses and traders predictability — knowing the exchange rate won't swing wildly makes cross-border contracts and pricing easier to plan. The trade-off is that the central bank surrenders some monetary independence, since it must prioritize defending the peg over other economic goals. If reserves run dry or a peg becomes unsustainable, the result can be a sharp, sudden devaluation — a significant event in FX markets.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. Instead of letting the market decide the exchange rate freely, the central bank commits to buying or selling its own currency whenever necessary to keep the rate stable.
To defend the peg, the central bank must hold large reserves of the anchor currency. If its own currency comes under selling pressure, it spends those reserves to buy it back and prop up the value. If the currency rises too much, it sells its own currency and buys the anchor currency instead. This constant management is what keeps the rate fixed.
Pegs offer businesses and governments predictability — importers and exporters know exactly what exchange rate to plan around. The trade-off is that the country gives up independent control over its monetary policy, since interest rate decisions must prioritize defending the peg rather than purely domestic economic goals. Countries like Saudi Arabia and Hong Kong are well-known examples of economies that maintain long-standing pegs to the US dollar.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's government or central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank stands ready to buy or sell its own currency whenever market pressure pushes the exchange rate away from the target.
Pegs are used to bring stability and predictability to trade and investment. Countries that import or export heavily may prefer a peg because businesses can plan costs and prices without worrying about sudden exchange-rate swings. Smaller economies or those with histories of high inflation often find pegs attractive for the same reason.
The trade-off is that maintaining a peg requires holding large foreign currency reserves and can limit a central bank's ability to set interest rates freely. If the reserves run low or market pressure becomes overwhelming, the peg can break — as famously happened with the British pound in 1992 and the Thai baht in 1997, events that reshaped how economists think about the risks of fixed exchange-rate systems.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank commits to keeping its currency at a set rate against another currency — most commonly the US dollar. To maintain that rate, the central bank buys or sells its own currency in the open market whenever supply and demand would otherwise push the price away from the target.
Countries often choose to peg their currency to promote trade stability and reduce uncertainty for businesses operating across borders. If importers and exporters know the exchange rate won't fluctuate wildly, they can plan contracts and prices with more confidence. Saudi Arabia's riyal and Hong Kong's dollar are well-known examples of long-standing pegs to the US dollar.
Maintaining a peg has a cost, however. A central bank must hold large foreign-currency reserves to defend it, and it loses some freedom to set interest rates independently — monetary policy becomes partly tied to whatever the anchor currency's issuing country does. If reserves run low or market pressure becomes overwhelming, a peg can break down, which is why the distinction between a "hard" peg (very strict) and a "soft" or "managed" peg (allowing a narrow band of movement) matters to economists and analysts.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank stands ready to buy or sell its own currency in the open market whenever the exchange rate drifts from the target.
Pegs offer predictability for businesses and governments that trade or borrow internationally, since they remove day-to-day exchange rate uncertainty. Countries with smaller or less diversified economies often find this stability attractive, as wild currency swings can make planning imports, exports, and debt repayment very difficult.
The trade-off is that maintaining a peg requires holding large foreign currency reserves and limits how freely a central bank can set interest rates for domestic economic needs. If market pressure becomes too great — meaning traders sell the pegged currency faster than the central bank can buy it — the peg can break, sometimes abruptly. Historical examples include the British pound's exit from the European Exchange Rate Mechanism in 1992 and Argentina's dollar peg collapse in 2002.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's government or central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank buys or sells its own currency in the open market whenever supply and demand would otherwise push the price away from the target.
Pegs are used by countries that want to reduce exchange-rate uncertainty, encourage trade, or import monetary stability from a larger economy. For example, if a country pegs its currency at 7.80 per US dollar, the central bank will intervene to defend that exact level, spending its foreign reserves if needed.
The trade-off is that maintaining a peg can be costly. A country must hold large reserves of the anchor currency, and it effectively surrenders some control over its own monetary policy, since interest rate decisions must partly serve the peg rather than purely domestic economic conditions. When reserves run low or the peg becomes misaligned with economic reality, countries sometimes abandon it — an event known as a peg break, which can trigger sharp, sudden currency moves.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. The central bank commits to buying or selling its own currency at a set rate to maintain that fixed price.
To defend the peg, the central bank needs foreign currency reserves. If demand for the local currency falls, the bank uses its dollar (or euro, etc.) reserves to buy it back, keeping the rate stable. If the local currency is in high demand, the bank sells more of it into the market. This ongoing balancing act can be costly, especially under heavy market pressure.
Pegs offer predictability for trade and investment — businesses know what exchange rate to expect, which simplifies cross-border contracts. The trade-off is that the country gives up some control over its own monetary policy, since interest rates often have to serve the peg rather than purely domestic economic needs. Well-known examples include the Hong Kong dollar's long-standing peg to the US dollar, and several Gulf state currencies that are also pegged to the dollar.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank commits to keeping its currency at a set value relative to another currency — most commonly the US dollar or euro. To maintain that fixed rate, the central bank actively buys or sells its own currency in the open market whenever the exchange rate drifts away from the target.
The main appeal of a peg is stability. Businesses and governments can plan imports, exports, and debt payments without worrying about sudden exchange-rate swings. Smaller, trade-dependent economies — such as those in the Gulf region, or historically in parts of Asia — have often used pegs for this reason.
The trade-off is that a peg requires the central bank to hold large reserves of the anchor currency to defend it. If reserves run low, or if markets bet heavily against the peg, maintaining it becomes very costly. Some pegs hold for decades; others eventually break and shift to a floating or managed float system, where the exchange rate is allowed to move more freely.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency's value at a fixed rate relative to another currency — most commonly the US dollar. To maintain this rate, the central bank stands ready to buy or sell its own currency in the open market whenever the exchange rate drifts away from the target.
Pegs are used to bring stability and predictability to trade and investment. Countries that rely heavily on imports or exports often prefer a stable exchange rate so businesses can plan ahead without worrying about sudden currency swings. The Hong Kong dollar's long-standing peg to the US dollar is a well-known example.
The challenge is that maintaining a peg requires the central bank to hold large foreign currency reserves. If market pressure against the currency becomes intense — meaning traders are aggressively selling it — the central bank must spend those reserves to defend the peg. If reserves run low, the peg can break down, sometimes abruptly. This is why analysts often watch a country's reserve levels as an indicator of how durable its peg is likely to be.
What Is a Currency "Peg" and How Does It Work?
A currency peg (also called a fixed exchange rate) is a policy where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. Rather than letting the market freely determine the exchange rate, the central bank commits to buying or selling its own currency whenever necessary to hold that fixed price.
To maintain the peg, the central bank must hold large reserves of the anchor currency (e.g., dollars). If demand for the local currency falls, the bank sells dollars and buys its own currency to prop it up. If demand rises too much, it does the opposite. This requires constant intervention and a substantial reserve cushion.
Well-known examples include the Hong Kong dollar, which has been pegged to the US dollar since 1983 within a narrow band, and the Saudi riyal, fixed since 1986. Pegs offer predictability for trade and investment, but they can come under severe stress if a country's economic fundamentals diverge sharply from those of the anchor country — as history has shown during various currency crises.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank buys or sells its own currency in the open market whenever the price drifts away from the target.
For example, if a country pegs its currency at 7.80 units per US dollar, and market pressure pushes it toward 7.85, the central bank will use its foreign currency reserves to buy its own currency back, increasing demand and pulling the rate back toward 7.80. This process requires the country to hold substantial reserves to be credible.
Pegs offer businesses and importers predictability — they can plan costs without worrying about exchange rate swings. The trade-off is that the central bank gives up some independence over monetary policy, since its primary obligation becomes defending the peg rather than freely adjusting interest rates for domestic economic needs.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank then intervenes in the foreign exchange market, buying or selling its own currency as needed, to keep the rate from drifting away from that target.
Pegs are used to bring stability and predictability to trade and investment. Countries that rely heavily on imports or exports can benefit because businesses know in advance what exchange rates to expect, making contracts and pricing far easier to plan. Smaller economies or those with histories of high inflation often find pegs attractive for the credibility they provide.
Maintaining a peg has real costs, however. A central bank must hold sufficient foreign currency reserves to defend it. If markets lose confidence — or if a country's economic conditions diverge sharply from those of the currency it is pegged to — defending the peg can become extremely expensive, and some pegs have broken down dramatically under that pressure. This is why economists describe a peg as a policy choice with genuine trade-offs rather than a free solution to currency volatility.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate against another currency — most commonly the US dollar or euro. To maintain that rate, the central bank stands ready to buy or sell its own currency in the open market whenever the exchange rate drifts from the target.
Pegs offer stability and predictability, which can be valuable for countries that rely heavily on international trade or foreign investment. Businesses know in advance what an imported good will cost, and investors face less uncertainty about the value of their returns when converted back to another currency.
The trade-off is that maintaining a peg requires the central bank to hold large reserves of foreign currency. If markets push hard against the peg — for example, because investors lose confidence — the central bank must spend those reserves to defend it. If reserves run low, the peg can break down, sometimes abruptly. Hong Kong's Linked Exchange Rate System, which has kept the Hong Kong dollar close to 7.8 per US dollar since 1983, is one of the most well-known examples of a long-running peg.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank commits to buying or selling its own currency whenever necessary to keep the exchange rate stable at that target level.
To maintain the peg, the central bank needs foreign currency reserves. If market pressure pushes the local currency below the pegged rate, the bank sells its reserves to buy the local currency back up. If the currency rises above the peg, it does the opposite. This requires holding large stockpiles of the anchor currency, typically in the form of government bonds or deposits.
Pegs offer predictability for businesses and traders — exchange rate risk is reduced, which can encourage cross-border trade and investment. The trade-off is that the country surrenders some control over its own monetary policy, since interest rates often have to follow those of the anchor currency. Well-known examples include the Hong Kong dollar, which has been pegged to the US dollar since 1983, and several Gulf state currencies tied to the dollar through their oil-export economies.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank stands ready to buy or sell its own currency in the open market whenever the exchange rate drifts away from the target.
Pegs offer predictability for businesses and traders who deal across borders, because they eliminate day-to-day exchange rate uncertainty. Countries that rely heavily on imports or exports of a single commodity often use pegs to make international contracts easier to price and plan around.
The trade-off is that maintaining a peg requires the central bank to hold large foreign currency reserves. If those reserves run low — or if markets lose confidence that the peg can hold — pressure can build quickly. Some notable historical episodes, such as the 1992 British pound crisis or Hong Kong's long-standing peg to the dollar (which remains in place today), illustrate just how much economic and political weight a simple fixed exchange rate can carry.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank commits to buying or selling its own currency at that fixed price to keep the rate stable. Saudi Arabia's riyal and Hong Kong's dollar are well-known examples of long-running pegs.
To maintain the peg, the central bank must hold large foreign exchange reserves. If traders sell the local currency heavily, the bank steps in and buys it back using those reserves, defending the fixed rate. This requires constant management and a substantial financial buffer to absorb pressure.
Pegs offer predictability for trade and business planning — importers and exporters know exactly what exchange rate to expect. The trade-off is that the country gives up the ability to set monetary policy independently, since interest rates often have to move in line with the anchor country's rates to keep the peg credible.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — or to a basket of currencies. Instead of letting the market freely determine the exchange rate, the central bank intervenes by buying or selling its own currency to keep the rate within a set band.
To maintain the peg, a country typically holds large foreign exchange reserves. If its currency starts falling below the target rate, the central bank sells some of those reserves (spending foreign currency) to buy its own currency back and prop up its value. The reverse happens if the currency rises too high.
Pegs offer stability and predictability for trade and contracts, which is why many smaller or export-dependent economies use them. The trade-off is that the country gives up some control over its own monetary policy — it must keep interest rates and money supply aligned with the anchor currency's conditions rather than purely its own economic needs. Notable examples of pegged currencies include the Hong Kong dollar (pegged to the USD) and several Gulf state currencies.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's government or central bank ties its currency's value to another currency — most commonly the US dollar or euro. Instead of letting the exchange rate float freely with market supply and demand, the authorities actively intervene to keep the rate within a narrow, predetermined band.
To maintain the peg, a central bank must hold large reserves of the anchor currency. If its own currency starts to weaken, it sells those reserves to buy its own currency back, propping the rate up. If the currency strengthens too much, it does the opposite. This requires constant management and significant financial firepower.
Pegs offer businesses and importers predictability, since exchange-rate volatility is reduced. However, they can come under intense pressure if market forces push strongly against them — as happened famously when the Bank of England was forced to abandon the pound's peg to the Deutsche Mark in September 1992, an event now known as "Black Wednesday." Maintaining a peg ultimately depends on whether a country's reserves and economic fundamentals can withstand sustained market pressure.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank officially ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. The central bank commits to buying or selling its own currency at that fixed rate to maintain the target price.
To defend the peg, the central bank uses its foreign exchange reserves. If market pressure pushes the currency below the target rate, the bank buys its own currency using those reserves, reducing supply and supporting the value. If the currency rises above the target, the bank sells more of it into the market. This constant intervention is what keeps the rate stable.
Pegs offer predictability for businesses and traders engaged in cross-border transactions, since exchange rate uncertainty is removed. However, they come with trade-offs: the country surrenders some control over its own monetary policy, and if reserves run low, defending the peg becomes very difficult. Several well-known currency crises throughout history — such as the 1997 Asian financial crisis — involved pegs that ultimately broke under sustained market pressure.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank stands ready to buy or sell its own currency in the open market whenever the exchange rate drifts from the target.
The main appeal of a peg is stability. Businesses and governments can plan imports, exports, and debt repayments without worrying about sudden exchange-rate swings. Smaller economies or those with high trade exposure to one partner often find this predictability valuable. Saudi Arabia's riyal and Hong Kong's dollar are well-known examples of long-standing pegs to the USD.
The trade-off is that maintaining a peg requires holding large foreign currency reserves, and the central bank surrenders some control over domestic monetary policy. If speculators believe a peg is unsustainable — perhaps because reserves are running low — they may bet heavily against the currency, which can force a sudden devaluation. This tension is a core concept in understanding how fixed and floating exchange rate regimes differ.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank must actively buy or sell its own currency whenever market forces push the exchange rate away from the target.
For example, if a country pegs its currency at 7.80 units per dollar, and demand for dollars rises, the central bank sells dollars from its foreign reserves to keep the rate steady. Conversely, if the local currency strengthens too much, it buys dollars to push the rate back up. This requires holding substantial foreign currency reserves as a buffer.
Pegs offer predictability for businesses and traders engaged in cross-border trade, since exchange rate uncertainty is reduced. The trade-off is that the central bank surrenders some independence over monetary policy — interest rate decisions must often prioritize defending the peg rather than purely domestic economic conditions. Notable examples of pegged currencies include the Hong Kong dollar (pegged to the USD) and several Gulf currencies.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank commits to keeping its currency at a set value relative to another currency — most commonly the US dollar or euro. Instead of letting the market freely determine the exchange rate, the central bank actively intervenes, buying or selling its own currency whenever the rate drifts from the target.
To maintain a peg, a country needs foreign currency reserves. If its own currency weakens toward the edge of the permitted range, the central bank sells reserves (foreign currency) and buys its own currency to push the rate back up. If the currency strengthens too much, it does the opposite. Countries like Saudi Arabia and the United Arab Emirates have maintained long-running dollar pegs this way.
Pegs offer stability and predictability — useful for trade and investment planning — but they come with tradeoffs. A country essentially imports the monetary policy of whichever currency it pegs to, giving up some independent control over interest rates. If reserves run low or economic pressures become extreme, a peg can break suddenly, which is why currency crises often involve the dramatic collapse of a fixed exchange rate arrangement.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's government or central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. Instead of letting the market decide the exchange rate freely, the authorities commit to buying or selling their own currency whenever needed to keep the rate stable.
To maintain the peg, a central bank must hold large reserves of the anchor currency. If its own currency starts to weaken — meaning more people want to sell it than buy it — the bank steps in and uses those reserves to buy it back, propping the rate up. If the currency strengthens too much, the bank sells it. This continuous intervention is what keeps the rate "fixed."
Pegs offer businesses and traders predictability, making cross-border trade and contracts easier to price. The trade-off is that the pegging country gives up some control over its own monetary policy, since interest rate decisions often have to serve the peg rather than purely domestic economic needs. Well-known examples include the Hong Kong dollar, which has been pegged to the US dollar since 1983.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank actively buys or sells its own currency in the open market whenever supply and demand would otherwise push the price away from the target.
The main appeal of a peg is stability. Businesses and governments can plan trade and borrowing without worrying about sudden swings in exchange rates. Countries with smaller or less developed financial markets often use pegs to build confidence in their currency and keep import costs predictable.
The trade-off is that maintaining a peg requires holding large foreign currency reserves, and the central bank surrenders some control over domestic monetary policy. If reserves run low or market pressure becomes overwhelming, the peg can break — a dramatic event known as a "peg collapse" or "devaluation" — which can cause sharp, sudden moves in the currency's value.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank buys or sells its own currency in the open market whenever supply and demand would otherwise push the price away from the target.
Countries choose pegs for several reasons: they can reduce exchange-rate uncertainty for businesses and investors, help control inflation, and build credibility in economies with a history of currency instability. The Hong Kong dollar's peg to the US dollar, in place since 1983, is one of the most well-known examples.
The trade-off is that a pegged country gives up independent control of its monetary policy — it must generally mirror the interest-rate decisions of whichever currency it is pegged to. If a peg becomes difficult to defend (for example, when a country's foreign reserves run low), the central bank may be forced to devalue or abandon the peg entirely, which can cause significant economic disruption.
What Is a Currency "Peg" and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank buys or sells its own currency in the open market whenever the exchange rate drifts away from the target.
Countries choose pegs for several reasons: they can reduce exchange-rate uncertainty for businesses, control imported inflation, and build credibility with international investors. Smaller, trade-dependent economies — such as those in the Gulf Cooperation Council, which peg to the dollar — often find the stability more valuable than the flexibility a floating rate would provide.
The trade-off is that a pegged currency requires the central bank to hold large foreign-exchange reserves to defend the rate under pressure. If reserves run low or market forces become too strong, the peg can break, sometimes abruptly. Historical examples include the British pound's exit from the European Exchange Rate Mechanism in 1992 and Argentina's dollar peg collapse in 2002 — both of which illustrated how maintaining a peg can become unsustainable when economic conditions diverge sharply from those of the anchor currency.
What Is a Currency "Peg" and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate against another currency — most commonly the US dollar or euro. Instead of letting the market freely determine the exchange rate, the central bank commits to buying or selling its own currency whenever needed to defend that fixed level.
To maintain the peg, the central bank must hold large reserves of the foreign currency it is pegged to. If demand for the local currency falls, the bank spends those reserves to buy its own currency and keep the rate stable. If demand rises too much, it does the opposite. Countries like Saudi Arabia and the United Arab Emirates use this system with their currencies tied to the US dollar.
The trade-off is that a peg offers stability and predictability for trade and investment, but it limits the central bank's ability to set interest rates independently. If the pegged currency comes under heavy speculative pressure and reserves run low, the peg can break — a dramatic event that historically has caused sharp, sudden currency moves, as seen in the 1992 British pound crisis or the 1997 Asian financial crisis.
What Is a Currency Peg and How Does It Work?
A currency peg is an arrangement where a country fixes its exchange rate to another currency — most commonly the US dollar — rather than letting it float freely on the open market. The central bank commits to buying or selling its own currency at a set rate to maintain that fixed level. Examples include the Hong Kong dollar, which has been pegged to the USD since 1983.
To defend a peg, the central bank must hold large reserves of the foreign currency it is pegging to. If market pressure pushes toward a weaker exchange rate, the central bank sells its reserves to buy up its own currency and keep the rate stable. The reverse happens if pressure builds in the other direction.
Pegs offer businesses and governments predictability in international trade and contracts, since exchange-rate volatility is removed. The trade-off is that the country gives up some control over its own monetary policy — interest rates often have to move in line with the anchor country's rates to keep the peg credible. This tension is sometimes called the "impossible trinity" in international economics.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank stands ready to buy or sell its own currency in the open market whenever the rate drifts away from the target.
Pegs are common among smaller or export-dependent economies because they reduce exchange-rate uncertainty, making it easier for businesses to plan cross-border trade and contracts. Countries like Saudi Arabia, the UAE, and Hong Kong have maintained well-known dollar pegs for decades.
The trade-off is that a peg requires the central bank to hold large foreign currency reserves and limits its ability to set interest rates independently. If reserves run low, or if the market strongly believes the peg is unsustainable, speculative pressure can force a devaluation — a dramatic repricing of the currency — as happened to the British pound in 1992 and the Thai baht in 1997.
What Is a Currency Peg, and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank buys or sells its own currency in the open market whenever supply and demand would otherwise push the price away from the target.
For example, if a country pegs its currency at 7.80 units per US dollar, and market pressure drives it toward 7.85, the central bank steps in to buy its own currency (using its foreign-reserve holdings), pulling the rate back toward 7.80. The reverse happens if pressure goes the other way.
Pegs offer predictability for trade and investment — businesses know exactly what exchange rate to plan around. The trade-off is that the central bank must hold large foreign reserves and can lose some ability to set interest rates independently, since monetary policy partly has to serve the goal of defending the peg rather than purely managing the domestic economy.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank buys or sells its own currency in the open market whenever supply and demand would otherwise push the price away from the target.
Countries choose pegs for stability. If businesses and governments know that 1 unit of their currency will always equal, say, 3.75 Saudi riyals to the dollar, it reduces uncertainty in trade contracts and cross-border investment. Smaller, trade-dependent economies especially benefit from the predictability a peg provides.
The tradeoff is that maintaining a peg requires large foreign currency reserves and limits monetary policy flexibility. If market pressure becomes too great — for example, if investors rapidly sell the pegged currency — the central bank may exhaust its reserves trying to defend it. Some historically famous pegs have broken under this pressure, forcing a sudden, sharp adjustment in the exchange rate known as a devaluation.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain this rate, the central bank buys or sells its own currency in the open market whenever the exchange rate threatens to drift away from the target.
Saudi Arabia's riyal, for example, has been pegged to the US dollar at roughly 3.75 riyals per dollar for decades. This gives businesses and importers a predictable exchange rate, which can reduce uncertainty in trade and contracts priced in foreign currencies.
The trade-off is that maintaining a peg requires large foreign currency reserves, and the central bank effectively surrenders some control over its own monetary policy. If market pressure becomes too strong — as happened with the British pound in 1992 — a peg can become very costly to defend and may eventually break, causing a sharp and sudden currency move.
What Is a Currency "Peg" and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. Instead of letting the exchange rate float freely with supply and demand, the central bank commits to buying or selling its own currency whenever needed to keep the rate stable around that target.
To maintain the peg, the central bank uses its foreign exchange reserves as a buffer. If demand for the local currency falls and the rate starts to drift, the bank sells dollars (or whichever anchor currency it holds) to buy its own currency back, pushing the price up. The reverse happens if the local currency strengthens too much. This requires holding large reserves, which is one reason countries like Saudi Arabia keep enormous stockpiles of foreign currency.
Pegs offer businesses and traders predictability — cross-border contracts and pricing become simpler when the exchange rate doesn't move. The trade-off is that the country gives up some control over its own monetary policy, since interest rate decisions must partly serve the goal of defending the peg rather than purely responding to domestic economic conditions.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. Instead of letting the market decide the price freely, the central bank commits to buying or selling its own currency whenever needed to keep the rate stable.
To maintain the peg, the central bank holds reserves of the anchor currency (like dollars or euros). If market pressure pushes the exchange rate away from the target, the bank intervenes by spending those reserves to defend it. Countries such as Saudi Arabia and Hong Kong have long used pegs, citing benefits like price stability and predictable trade conditions.
The main vulnerability of a peg is that it requires sufficient reserves and credible policy to survive pressure. If traders believe a country cannot sustain the peg — perhaps because reserves are running low — speculative attacks can force a devaluation. This is exactly what happened during the 1997 Asian financial crisis, when several currencies that were pegged to the dollar came under severe pressure and ultimately broke.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank holds its currency at a set rate against another currency, most commonly the US dollar or euro. Rather than letting the market freely determine the exchange rate, the central bank steps in to buy or sell its own currency whenever the rate drifts away from the target.
To maintain the peg, the central bank needs a reserve of foreign currency to conduct these interventions. If demand for the domestic currency falls, the bank uses its reserves to buy it back, supporting the rate. If demand rises too strongly, it sells domestic currency into the market to prevent appreciation beyond the target level.
Pegs offer predictability for businesses and traders doing cross-border transactions, since exchange rate risk is reduced. However, they require the central bank to keep substantial reserves and to align domestic monetary policy with the anchor country's policies — which can be a significant constraint. When reserves run low or economic pressures build, a peg can break down suddenly, which is why currency crises historically tend to involve pegged exchange rate systems.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank stands ready to buy or sell its own currency in the open market whenever the exchange rate drifts from the target.
To defend a peg, a country needs foreign currency reserves. If its currency comes under downward pressure, the central bank sells dollars (or euros, etc.) from its reserves and buys its own currency back, propping the rate up. If the currency strengthens too much, it does the opposite. This makes the size of a country's reserve holdings a key indicator of how robustly it can defend the peg.
Pegs offer predictability for businesses and traders — import and export prices stay stable, which can reduce uncertainty in trade contracts. The trade-off is that the country gives up the ability to set monetary policy independently; its interest rates must broadly follow the anchor currency's rates to prevent destabilizing capital flows. Examples of long-standing pegs include the Hong Kong dollar's link to the US dollar, which has been maintained since 1983.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. The central bank commits to buying or selling its own currency at a set rate to maintain that fixed price in the market.
To defend the peg, the central bank uses its foreign exchange reserves. If demand for the domestic currency falls and it threatens to drop below the pegged rate, the bank sells foreign currency (like dollars) and buys its own currency to prop the price up. The reverse happens if the currency strengthens too much above the peg.
Pegs offer businesses and traders predictability — cross-border contracts and pricing become more straightforward when exchange rates don't fluctuate. The trade-off is that the central bank surrenders some control over domestic monetary policy, since interest rate decisions must partly serve the goal of defending the peg rather than responding freely to local economic conditions. The Hong Kong dollar's long-standing peg to the US dollar is one of the most well-known examples in the world today.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank stands ready to buy or sell its own currency whenever market forces push the exchange rate away from the target.
For example, if a country pegs its currency at 7.80 units per dollar, and demand causes it to drift toward 7.85, the central bank steps in — typically by spending its foreign currency reserves to buy its own currency back, nudging the rate back to 7.80. The reverse happens if the currency strengthens too much.
Pegs offer predictability for businesses and traders who deal across borders, since they remove exchange-rate uncertainty from transactions. The trade-off is that the central bank surrenders some freedom over domestic monetary policy — it must prioritize defending the peg over other economic goals. Countries with very large foreign currency reserves are generally better equipped to hold a peg under pressure.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank stands ready to buy or sell its own currency whenever market pressure pushes the exchange rate away from the target.
Pegs are maintained using foreign exchange reserves. If demand for the local currency falls and it threatens to slip below the pegged rate, the central bank spends its dollar (or euro, etc.) reserves to buy the local currency back up. If the local currency strengthens too much, the bank sells local currency and accumulates more reserves. This constant intervention is what keeps the rate stable.
Countries often choose a peg to reduce exchange-rate uncertainty for trade and investment, particularly when their economy is closely tied to the anchor country's. Well-known examples include the Hong Kong dollar, which has been pegged to the US dollar since 1983, and several Gulf state currencies. The trade-off is that the country largely gives up independent control of its monetary policy, since interest rates must be set partly to defend the peg rather than purely to manage domestic economic conditions.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is when a country's government or central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. Instead of letting the market determine the exchange rate freely, the authorities commit to buying or selling their own currency whenever needed to keep the rate stable.
To defend the peg, a central bank must hold large reserves of the anchor currency. If traders sell the local currency heavily, the central bank steps in and buys it back using those reserves, keeping the rate from falling. If demand for the local currency surges, the bank sells more of it to prevent the rate from rising too high.
Pegs offer predictability for businesses and traders — import and export prices stay stable, and cross-border contracts carry less exchange-rate risk. The trade-off is that the country loses some control over its own monetary policy, since interest rate decisions often have to serve the peg rather than purely domestic economic needs. Well-known examples include the Hong Kong dollar, which has been pegged to the US dollar since 1983.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank commits to keeping its currency at a set value relative to another currency — most commonly the US dollar. To maintain the peg, the central bank buys or sells its own currency in the open market whenever the exchange rate drifts from the target level.
Countries choose pegs for different reasons: smaller or trade-dependent economies often peg to reduce exchange-rate uncertainty for businesses and investors. The Hong Kong dollar, for example, has been pegged to the US dollar since 1983 within a narrow band, managed through a system called a currency board.
The trade-off is that a pegged currency limits a central bank's flexibility. To defend the peg, the country must hold large foreign currency reserves and may have to adjust domestic interest rates to match the anchor currency's policy — even if that doesn't suit local economic conditions. When reserves run low or market pressure becomes overwhelming, a peg can break, sometimes abruptly.
What Is a Currency Peg and How Does It Work?
A currency peg is a policy decision by a country's government or central bank to fix its currency's exchange rate to another currency — most commonly the US dollar or euro — at a set ratio. Instead of letting the market determine the rate freely, the authorities commit to maintaining that specific level.
To defend a peg, a central bank must actively intervene. If demand for its currency falls and the rate threatens to drop below the fixed level, the bank sells its foreign reserves to buy its own currency, propping the rate back up. If the currency strengthens too much, it does the reverse. This requires holding large reserves of the anchor currency.
Pegs offer businesses and governments predictability — importers and exporters know exactly what exchange rate to plan around. The trade-off is that the country gives up some control over its own monetary policy, since interest rate decisions must partly serve the goal of maintaining the peg rather than purely domestic economic conditions. Well-known examples include Hong Kong's long-standing peg to the US dollar and several Gulf states' ties to the dollar through their oil economies.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank then commits to buying or selling its own currency in the open market to keep the exchange rate from drifting away from that target.
To maintain the peg, the central bank needs foreign currency reserves. If its own currency comes under selling pressure, it uses those reserves to buy it back, propping up the value. If the currency rises too much, it sells more of its own currency into the market. This constant intervention is what distinguishes a peg from a freely floating exchange rate, where supply and demand alone determine the price.
Pegs offer businesses and importers predictability — companies can plan cross-border contracts without worrying about sudden exchange rate swings. The trade-off is that the central bank surrenders some control over its own monetary policy, since interest rate decisions must partly serve the goal of defending the peg rather than managing the domestic economy alone. Countries like Saudi Arabia and Hong Kong are well-known examples of economies that maintain dollar pegs.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. The central bank commits to buying or selling its own currency at a set rate to maintain that fixed price.
To defend the peg, the central bank uses its foreign-exchange reserves. If the domestic currency faces selling pressure and risks falling below the pegged rate, the bank buys it up using those reserves. If the currency is being pushed higher, the bank sells it. This constant intervention keeps the exchange rate stable within a narrow band.
Pegs offer predictability for businesses and traders involved in cross-border transactions, since exchange-rate uncertainty is removed. However, they also come with a cost: the central bank sacrifices independent control over monetary policy, because interest rate decisions must prioritize defending the peg rather than managing the domestic economy. Well-known examples of pegged currencies include the Hong Kong dollar, which has been pegged to the US dollar since 1983.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank commits to keeping its currency at a set value relative to another currency — most commonly the US dollar or euro. To maintain the peg, the central bank buys or sells its own currency in the open market whenever the rate drifts away from the target.
Pegs offer predictability for businesses and traders because exchange rate risk is reduced. Countries that rely heavily on imports or exports often favor them for this reason. However, maintaining a peg requires holding large foreign currency reserves, since the central bank must be ready to defend the rate under pressure.
The challenge arises when economic conditions make the peg difficult to sustain. If a country's fundamentals diverge sharply from those of the currency it is pegged to, the central bank may eventually run low on reserves. History offers well-known examples of pegs breaking down — sometimes dramatically — when market pressure became too great to resist. This is why analysts closely watch a country's reserve levels as a signal of how durable its peg might be.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank buys or sells its own currency in the open market whenever supply and demand would otherwise push the price away from the target.
Countries often choose to peg their currency to reduce exchange-rate uncertainty, which can make cross-border trade and investment easier to plan. Smaller economies or those with high inflation histories have historically used pegs to borrow credibility from a more stable anchor currency.
The main challenge is that maintaining a peg requires holding large foreign-currency reserves. If the central bank runs low on those reserves, or if market pressure becomes overwhelming, the peg can break — a sudden event sometimes called a "peg collapse" — causing the currency to move sharply in a short period. The 1997 Asian financial crisis and the 1992 exit of the British pound from the European Exchange Rate Mechanism are well-known historical examples of peg stress and failure.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar or euro — at a set rate. The government or central bank commits to buying and selling its own currency at that fixed price to maintain the link.
To defend a peg, a central bank needs foreign currency reserves. If traders push the domestic currency below the target rate, the central bank buys it using those reserves, propping the value back up. If pressure goes the other way, it sells domestic currency. This constant intervention is what keeps the rate stable.
Pegs offer predictability for businesses and traders who deal across borders, since exchange-rate uncertainty is removed. However, they require large reserves and limit a central bank's ability to set interest rates freely for domestic economic needs — a trade-off economists call the "impossible trinity." Notable historical examples include Hong Kong's long-standing peg to the US dollar and various Gulf state currencies tied to the dollar today.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — or to a basket of currencies. The central bank commits to buying or selling its own currency at a set rate to maintain that fixed level, rather than letting the market freely determine the price.
To defend a peg, the central bank uses its foreign exchange reserves. If market pressure pushes the domestic currency below the target rate, the bank sells its reserve currency (e.g., dollars) and buys its own currency to prop the price back up. If pressure goes the other way, it does the opposite. This requires holding substantial reserves, because the bank must be ready to intervene at any time.
Pegs offer predictability for businesses and traders — import and export contracts become easier to price when exchange rates are stable. However, they come with trade-offs: a country surrenders some control over its own monetary policy, since interest rate decisions must often be made with the peg's defence in mind rather than purely domestic economic conditions. Well-known examples of pegged currencies include the Hong Kong dollar (pegged to the USD since 1983) and several Gulf state currencies.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties the value of its currency to another currency — most commonly the US dollar — at a set rate. Instead of letting market forces freely determine the exchange rate each day, the central bank commits to defending that specific level.
To maintain the peg, the central bank intervenes by buying or selling its own currency in the foreign exchange market. If the domestic currency starts to fall below the pegged rate, the bank buys it up using its foreign currency reserves. If it rises above, the bank sells more of it. This requires holding large reserves of the anchor currency to have enough firepower to defend the rate.
Pegs offer businesses and importers a degree of predictability — knowing the exchange rate won't shift suddenly makes planning easier. The trade-off is that the country effectively surrenders some control over its own monetary policy, since interest rate decisions often have to prioritize defending the peg rather than managing domestic economic conditions. Countries like Saudi Arabia and Hong Kong are well-known examples of economies that maintain long-standing pegs to the US dollar.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank commits to buying or selling its own currency at that rate to keep the exchange rate stable, rather than letting market supply and demand move it freely.
To maintain the peg, the central bank needs foreign currency reserves. If demand for its own currency falls, it spends those reserves to buy its currency back up to the pegged level. If demand rises too high, it sells its currency to push the rate back down. This requires constant intervention and a large enough reserve stockpile to be credible.
Pegs offer businesses and governments predictability in trade and contracts, which is why smaller economies or those with major trade ties to one partner often choose them. The trade-off is that the country gives up the ability to set monetary policy independently — it essentially has to follow the interest rate decisions of whichever currency it is pegged to. Hong Kong's peg to the US dollar, in place since 1983, is one of the most well-known long-running examples.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank then actively manages its foreign-exchange reserves to maintain that rate, buying or selling its own currency whenever market pressure would otherwise push the exchange rate away from the target.
Countries choose to peg for several reasons: it can reduce exchange-rate uncertainty for businesses and trade partners, help control inflation, and build credibility in economies with a history of currency instability. The Hong Kong dollar's long-standing peg to the US dollar and Saudi Arabia's riyal are well-known examples of managed pegs in practice.
The trade-off is a significant one. A pegged country essentially surrenders independent monetary policy — it must keep its interest rates closely aligned with the anchor country's rates to defend the peg. If reserves run low and the peg becomes hard to defend, a sudden devaluation can follow, sometimes with sharp economic consequences. This vulnerability is why currency pegs are closely watched by economists and market participants alike.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. Instead of letting the market freely determine the exchange rate, the central bank intervenes by buying or selling its own currency to keep the rate stable within a narrow band.
Countries choose pegs for several reasons: to reduce exchange-rate uncertainty for businesses and investors, to control inflation, or to build credibility in their monetary system. Smaller, trade-dependent economies or those with histories of currency instability often find a peg attractive because it makes import and export pricing more predictable.
The trade-off is that maintaining a peg requires holding large foreign-currency reserves, and it limits a central bank's ability to set interest rates independently. If the peg comes under heavy market pressure — meaning traders collectively bet the rate is unsustainable — the central bank must spend down reserves to defend it. Famous historical examples of pegs breaking under pressure include the British pound's exit from the European Exchange Rate Mechanism in 1992 and the Swiss franc's removal of its euro cap in 2015.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's government or central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank then actively intervenes in the foreign exchange market, buying or selling its own currency as needed, to keep the exchange rate from drifting away from that fixed level.
Pegs offer predictability. Businesses and governments dealing in international trade know exactly what the exchange rate will be, which simplifies planning and reduces currency risk. Countries with historically volatile currencies sometimes adopt pegs to import credibility and keep inflation in check, since the peg effectively links their monetary conditions to those of the anchor currency.
The trade-off is that maintaining a peg requires substantial foreign currency reserves and limits a central bank's freedom to set interest rates independently. If the peg becomes misaligned with economic reality — say, through high inflation or a large trade deficit — pressure builds and the peg can become very costly to defend. History has several famous examples of pegs breaking down under market pressure, making them a closely watched feature of the global FX landscape.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is a policy where a country's central bank ties its currency's value to another currency — most commonly the US dollar — at a set rate. To maintain that rate, the central bank buys or sells its own currency in the open market whenever supply and demand would otherwise push the price away from the target.
For example, if a country pegs its currency at 7.80 units per US dollar, and market pressure pushes toward 7.85, the central bank steps in to buy its own currency, reducing supply and pulling the rate back toward 7.80. This requires holding large foreign currency reserves, because the bank needs the firepower to intervene repeatedly over time.
Pegs offer businesses and traders predictability — a company importing goods knows exactly what exchange costs to expect. The tradeoff is that the central bank surrenders some control over domestic monetary policy, since interest rate decisions must partly serve the goal of defending the peg rather than focusing solely on the local economy.
What Is a Currency Peg — and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar or euro. Instead of letting the exchange rate float freely with supply and demand, the central bank actively intervenes, buying or selling its own currency to keep the rate within a defined band or at a specific level.
To maintain a peg, a central bank needs foreign exchange reserves — stockpiles of the anchor currency it can deploy when pressure builds. If traders are selling the local currency heavily, the central bank buys it back using those reserves, propping up its value. The larger and more credible the reserve base, the more resilient the peg tends to be.
Pegs offer predictability for businesses and importers who plan around stable exchange rates, but they come with trade-offs. A country surrenders some control over its own monetary policy, since interest rates often have to be adjusted to defend the peg rather than to manage domestic economic conditions. Well-known examples of pegged currencies include the Hong Kong dollar (pegged to the USD since 1983) and several Gulf state currencies.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties the value of its currency to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. The central bank commits to buying or selling its own currency at a set rate to keep the exchange rate stable.
To defend a peg, the central bank uses its foreign exchange reserves. If market pressure pushes the currency toward a weaker rate, the bank sells its dollar reserves and buys its own currency to prop up demand. If pressure goes the other way, it does the opposite. This requires holding large reserves and constant active management.
Pegs offer predictability for trade and cross-border business, since companies know the exchange rate won't shift unexpectedly. The trade-off is that the country gives up some control over its own monetary policy — interest rate decisions, for example, often have to align with the anchor currency's policy rather than purely domestic economic needs. Well-known examples of pegged currencies include the Hong Kong dollar, which has been pegged to the US dollar since 1983.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country ties its currency's value to another currency — most commonly the US dollar — at a set rate. The central bank commits to buying or selling its own currency whenever the market price drifts from that target, keeping the rate stable.
To defend a peg, a central bank needs foreign exchange reserves. If the local currency starts weakening, the bank sells dollars (or whichever anchor currency it holds) and buys back the local currency, propping up its value. If the currency strengthens too much, the process runs in reverse.
Pegs offer predictability for businesses and traders that cross borders, because exchange rate uncertainty is removed. The trade-off is that the central bank sacrifices some control over its own monetary policy — it must prioritize defending the rate rather than freely adjusting interest rates for domestic economic conditions. Countries like Saudi Arabia and Hong Kong operate well-known pegged systems, each with their own structural rules for maintaining them.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — or to a basket of currencies. The central bank commits to buying or selling its own currency at a set rate to maintain that fixed price in the market.
To defend the peg, the central bank uses its foreign exchange reserves. If demand for the local currency falls and its value threatens to drop below the pegged rate, the bank buys its own currency using those reserves, which props the price back up. The reverse happens if the currency tries to rise above the target.
Pegs offer businesses and governments predictability in trade and borrowing, since exchange rate surprises are minimized. The trade-off is that the central bank sacrifices some monetary policy independence — it must prioritize defending the peg rather than freely adjusting interest rates solely for domestic economic goals. Countries like Saudi Arabia and Hong Kong are well-known examples of economies that maintain long-standing pegs to the US dollar.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank commits to keeping its currency at a set rate against another currency — most commonly the US dollar. To maintain that rate, the central bank buys or sells its own currency in the open market whenever supply and demand would otherwise push the rate away from the target.
Countries choose pegs for different reasons. A stable exchange rate can reduce uncertainty for businesses trading across borders, control inflation imported through trade, or build confidence in an economy with a historically volatile currency. The Hong Kong dollar, for example, has been pegged to the US dollar since 1983 within a narrow band managed by the Hong Kong Monetary Authority.
The trade-off is that a peg requires the central bank to hold large foreign currency reserves as ammunition to defend the rate. If those reserves run low, or if market pressure becomes overwhelming, the peg can break — a situation sometimes called a "peg collapse." When that happens, the currency typically moves sharply and quickly, since the artificial constraint is suddenly removed. This vulnerability is why pegs are closely watched by economists and analysts as signals of a country's external financial health.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank sets its currency at a fixed rate against another currency — most commonly the US dollar or euro. To maintain that rate, the central bank stands ready to buy or sell its own currency in the open market whenever the exchange rate drifts away from the target.
For example, if a country pegs its currency at 7.80 units per US dollar, the central bank will sell dollars (and buy its own currency) if the rate rises above 7.80, and buy dollars (selling its own currency) if it falls below. This requires holding large foreign exchange reserves as a buffer to absorb market pressure.
Pegs offer predictability for businesses and traders — import and export prices stay stable, making cross-border planning easier. The trade-off is that the central bank gives up some flexibility over domestic monetary policy, since interest rate decisions must partly serve the goal of defending the peg rather than responding freely to local economic conditions.
What Is a Currency Peg and How Does It Work?
A currency peg (also called a fixed exchange rate) is an arrangement where a country's central bank ties its currency's value to another currency — most commonly the US dollar — or sometimes to a basket of currencies or a commodity like gold. Instead of letting the market freely determine the exchange rate, the central bank commits to maintaining a specific rate or a narrow band around it.
To defend the peg, the central bank intervenes in the foreign exchange market. If its currency starts falling below the target rate, it buys its own currency using foreign reserves, which supports the price. If the currency rises too high, it sells its own currency. This requires the country to hold substantial foreign exchange reserves as a buffer.
Pegs offer businesses and importers/exporters predictability — they know what exchange rate to plan around. The trade-off is that the central bank surrenders some control over its own monetary policy, since interest rate decisions must partly serve the goal of maintaining the peg rather than purely addressing domestic economic conditions. Hong Kong's peg to the US dollar, in place since 1983, is one of the most well-known long-running examples.
Overview
Foreign exchange, commonly called FX or forex, is the global marketplace where currencies are bought and sold. It is the largest and most liquid financial market in the world, with trillions of dollars changing hands every single day. Unlike stock markets, FX has no central exchange or physical location — trading happens around the clock through a decentralized network of banks, brokers, financial institutions, and individual participants spread across every time zone.
Every currency is priced in relation to another currency, forming what is known as a currency pair. The euro paired with the US dollar, written as EUR/USD, is one of the most widely traded examples. The price of a pair tells you how much of one currency is needed to buy a unit of the other. These prices shift constantly in response to economic data, interest rate decisions, political events, trade flows, and the collective judgments of millions of market participants.
The FX market serves several practical purposes in the global economy. Businesses that operate across borders use it to convert revenues and pay suppliers in different currencies. Travelers exchange money when visiting foreign countries. Central banks participate to manage their national currency's value or maintain financial stability. These everyday needs create a constant, natural flow of currency exchange that forms the foundation of the market.
Exchange rates can move in two directions. When a currency strengthens, it buys more of another currency than it did before. When it weakens, it buys less. These movements are influenced by factors such as inflation rates, interest rate differentials between countries, economic growth figures, government debt levels, and broader market sentiment. Even unexpected news events can cause sharp, rapid moves in currency prices.
Understanding FX begins with recognizing that currencies are interconnected. A change in one major economy — a shift in US monetary policy, for instance — can send ripples through currency pairs far beyond the dollar. This interconnectedness makes the FX market a useful lens for understanding the broader health and direction of the global economy.