Currency Depreciation
What is Currency Depreciation?
Currency depreciation is a decrease in the value of a currency relative to another in the foreign exchange market.
It results from falling demand for the currency or rising supply, often driven by lower interest rates or weaker growth. A depreciating currency makes exports cheaper and imports more expensive, raising net exports. It is the opposite of appreciation.
Currency Depreciation: a worked example
Take a peso quoted at 20 pesos per dollar that moves to 25 pesos per dollar. Each peso was worth 1 ÷ 20 = $0.05 and is now worth 1 ÷ 25 = $0.04, a fall of 20%, so the peso depreciated. A domestically made export tagged at 900 pesos cost a foreign buyer 900 ÷ 20 = $45 and now costs 900 ÷ 25 = $36, so it looks cheaper abroad. The same move raises costs at home: an imported component priced at $30 cost 30 × 20 = 600 pesos and now costs 30 × 25 = 750 pesos, up 25%. Net exports rise, while producers dependent on imported parts face higher costs that push short-run aggregate supply left.
The mistake students make with currency depreciation
Depreciation and devaluation get used interchangeably, and on a free response that costs the point. Depreciation happens in a floating market when supply and demand for the currency shift, with no announcement from anyone. Devaluation is a deliberate act by a government or central bank operating a fixed or pegged rate, resetting the official value downward. A second slip is assuming the trade balance improves the instant the currency falls, when import bills rise immediately in domestic currency and export volumes respond only after buyers adjust.
Currency Depreciation questions
What causes a currency to depreciate?
Falling demand for a currency or rising supply of it drives the value down. Lower domestic real interest rates send financial capital abroad chasing better returns. A domestic inflation rate above trading partners erodes purchasing power. Weak growth prospects deter foreign investors. A surge in domestic appetite for imports means selling domestic currency to buy foreign currency. A central bank selling its own currency in the market produces the same result deliberately.
Does currency depreciation cause inflation?
Depreciation raises the domestic-currency price of imported goods and imported inputs, which feeds straight into the price level. Suppose imported fuel, components, and consumer goods make up a fifth of what households and firms buy, and depreciation lifts their domestic prices by 10%. That alone adds roughly 2 percentage points to the price level. Costlier inputs also shift short-run aggregate supply left, so output can fall at the same time prices climb.
Who is hurt by a weaker currency?
Households buying imported goods lose first, since the same purchase now takes more domestic currency. Manufacturers dependent on imported components face higher input costs they may not be able to pass on. Anyone holding debt denominated in foreign currency is squeezed hardest, because repaying a fixed foreign obligation now takes more domestic currency out of unchanged domestic revenue. Travelers heading abroad also find every foreign price higher, while inbound tourism operators gain.
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