Currency Appreciation and Depreciation

What Is Currency Appreciation and Depreciation?

Currency appreciation and depreciation describe changes in a currency's value relative to another currency. A currency appreciates when it gains value against another, so one unit buys more foreign currency than before. It depreciates when it loses value: if the U.S. dollar depreciates against the euro, the number of euros that one dollar can buy falls. Under a floating exchange rate, these movements happen continuously as supply and demand for the currency shift. A related but distinct term is devaluation, which in AP Macroeconomics refers specifically to a deliberate official reduction of a currency's value under a fixed or pegged exchange rate regime, rather than a market-driven decline.

Why It Matters

Appreciation and depreciation reshape a country's trade position. All else equal, a weaker, depreciated currency makes a country's exports cheaper for foreign buyers, tending to increase export volume, while a stronger, appreciated currency makes imports cheaper for domestic buyers, tending to increase imports. This is why exchange-rate movements feed directly into trade balances and are watched closely by exporters, importers, and policymakers. Currencies appreciate or depreciate for many reasons, including differences in interest rates, inflation, growth, and investor confidence. A rise in domestic interest rates relative to other countries, for instance, tends to attract capital and push the currency up. Because these swings can be large and fast, they are a major source of risk in international business.