Example

Calculating Required Nominal Depreciation to Maintain Competitiveness

To illustrate how a country maintains competitiveness, consider a scenario where domestic inflation is 10% and foreign inflation is 2%. To maintain a constant real exchange rate, the domestic currency's nominal exchange rate must depreciate at a rate of 8% per year. This depreciation is a necessary condition derived from the formula δ=ππ\delta = \pi - \pi^*. If this condition is not met, the real exchange rate will change, which would impact real economic variables like output and employment and move the economy away from its supply-side equilibrium.

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Updated 2026-05-02

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