Currency Pegging Mechanism Quiz: Fixed Exchange Rates

Currency pegging means that a government or central bank officially sets the exchange rate between its currency and a reference currency, such as the US dollar or euro, at a specific predetermined value. The central bank then commits to buying or selling currency in the foreign exchange market to maintain the peg, preventing the rate from drifting away from the official level through market pressures.

The answer is False. A currency peg simply fixes the exchange rate between two currencies at a set value. The pegging country retains its own central bank and issues its own currency. It does not share the monetary authority of the anchor country. What it does give up is the freedom to set interest rates independently, because it must manage monetary conditions to maintain the exchange rate at the pegged level.

When market forces push the currency below the pegged rate, the central bank steps in to increase demand for the domestic currency by purchasing it using its foreign exchange reserves. This buy-side intervention absorbs excess supply of the domestic currency in the market, pushing its price back up to the fixed rate. The reserves the central bank uses are depleted through this process, which is why large reserve holdings are essential for a viable peg.

Hong Kong, Saudi Arabia, and Denmark all operate currency pegs or narrow-band arrangements against major currencies. The Hong Kong dollar has been pegged to the US dollar since 1983. Saudi Arabia has maintained its dollar peg for decades. Denmark keeps the krone within a tight band against the euro. The Japanese yen is a freely floating currency and does not represent a pegged arrangement.

The answer is False. Currency pegs are rarely set at the exact market equilibrium rate and usually require ongoing central bank intervention. Economic conditions change over time, including inflation, trade patterns, and capital flows, causing the market-clearing exchange rate to diverge from the pegged level. When this happens, the central bank must intervene to hold the rate at the official value, often spending or accumulating reserves in the process.

A strict peg maintains one fixed rate indefinitely. A crawling peg builds in a gradual, scheduled adjustment of the fixed rate over time, typically to compensate for differences in inflation between the pegging country and the anchor country. This prevents the peg from becoming increasingly overvalued while still providing more stability and predictability than a fully floating system.

When a pegged currency is overvalued, the country's exports become expensive relative to competitors, reducing foreign demand. This shrinks export revenues and widens the current account deficit. The resulting net outflow of foreign exchange depletes reserves, making it harder to maintain the peg. If reserves fall too far, the country may be forced to devalue or abandon the peg entirely, often in a disruptive and sudden currency crisis.

The answer is True. Speculative attacks are self-fulfilling crises that threaten currency pegs. When investors doubt a government's ability to defend the peg, they sell the domestic currency to avoid losses from an expected devaluation. This massive selling pressure forces the central bank to spend large amounts of reserves to support the currency. If confidence is not restored, the reserves are exhausted and the peg collapses, exactly as the speculators predicted.

Long-term peg sustainability depends on having reserves for intervention, setting the rate near equilibrium to minimize ongoing pressure, and keeping inflation aligned with the anchor country to avoid competitiveness erosion. A large and growing budget deficit is a threat to the peg because it increases domestic demand, fuels inflation, and may require money creation, all of which put downward pressure on the currency and make the peg harder to defend.

Pegging to a basket of currencies provides a more diversified exchange rate anchor. If a country trades with multiple partners using different currencies, tying to a single currency can create significant volatility against other trading partners when that anchor currency moves. A basket peg spreads this risk by averaging movements across several currencies, providing more balanced exchange rate stability across the country's full range of trade relationships.

The answer is True. When a central bank purchases domestic currency to defend the peg, it pays for those purchases by selling foreign exchange reserves. The domestic currency bought is withdrawn from circulation, reducing the money supply. A smaller money supply means less credit is available in the banking system, which raises interest rates and tightens borrowing conditions. This automatic credit tightening is an important transmission mechanism in pegged exchange rate systems.

Dollarization represents the extreme end of the pegging spectrum. While a standard peg fixes the exchange rate but retains a domestic currency, full dollarization eliminates the domestic currency entirely and replaces it with a foreign one. Countries like Ecuador and El Salvador have adopted full dollarization, permanently surrendering monetary policy independence in exchange for the maximum possible exchange rate stability.

Currency pegs face the most severe pressure when competitiveness erodes due to higher domestic inflation, when reserve depletion from trade deficits makes intervention harder to sustain, and when investor confidence collapses triggering speculative selling. Strong relative economic growth does not inherently threaten the peg, as it can attract capital inflows that support the currency rather than putting downward pressure on it.

A currency peg can serve as an anti-inflation commitment device. By tying the exchange rate to a stable anchor currency, the government signals that it cannot simply print money to cover fiscal deficits without threatening the peg. This commitment to exchange rate stability imports the monetary discipline of the anchor country, reducing inflation expectations and encouraging the kind of responsible fiscal and monetary behavior that brings inflation under control.

The answer is True. Credibility is a self-reinforcing asset in currency pegging. When a government consistently demonstrates the willingness and ability to defend the peg over many years, markets come to trust that the rate will hold. This reduces speculative pressure because investors do not expect a devaluation. Greater credibility lowers the frequency and cost of intervention needed to maintain the peg, making a long-standing commitment genuinely easier to sustain.