Exchange-rate movements change the domestic price of foreign goods through a chain of market and policy mechanisms. When the domestic currency depreciates, the immediate effect is that the same foreign currency price costs more in local units. That mechanical link is the starting point for exchange-rate pass-through, the degree to which exchange-rate changes show up in domestic import prices. Research by Maurice Obstfeld, University of California, Berkeley, and Kenneth Rogoff, Harvard University, explains that pass-through is rarely complete because firms, contracts, and policy responses mediate the translation from currency moves into consumer and producer prices.
How pass-through works and what shapes it
Three forces shape how much of an exchange-rate change reaches import prices. First, invoicing currency matters: when international transactions are invoiced in a dominant currency such as the US dollar, exporters set prices in that currency and importers absorb exchange-rate shifts, which tends to reduce immediate pass-through. Gita Gopinath, Harvard University, has documented the prevalence of dollar invoicing and its role in producing incomplete and asymmetric pass-through across countries. Second, pricing behaviour and market structure affect outcomes: firms engaged in price discrimination or pricing-to-market may adjust markups rather than pass costs through fully, especially in competitive product markets. Third, financial instruments and contracts such as hedging and long-term supplier contracts delay or smooth the impact of currency moves, meaning import prices may adjust gradually rather than instantly.
Policy and institutional context also matter. Central bank credibility and inflation targeting can limit second-round effects because firms expect monetary authorities to resist persistent inflation driven by currency movements. International Monetary Fund analysis by Jonathan D. Ostry, International Monetary Fund, highlights that countries with weaker monetary frameworks or large foreign-currency liabilities are more vulnerable to exchange-rate-driven price and balance sheet stress.
Consequences for households, firms, and policy
The consequences of exchange-rate-driven changes in import prices are broad. For consumers, higher import prices raise the cost of durable goods, fuel, and food, with disproportionate impacts on low-income households where imported staples form a larger share of consumption. For firms, rising import costs squeeze margins for input-dependent producers and can force price increases that reduce demand. For national accounts, exchange-rate depreciations can improve export competitiveness but worsen import bills and drive up headline inflation, complicating monetary policymaking.
Territorial and environmental nuances matter as well. Small island states and landlocked low-income countries that depend heavily on imported fuel and food experience larger real-income effects from currency depreciations. Energy-import price shocks can also influence environmental choices by making fossil fuels relatively costlier and shifting incentives for local energy production or conservation. Cultural effects may arise when currency-driven food price spikes affect diets and social stability, particularly in regions where staple foods are mostly imported.
Empirical assessments by the Bank for International Settlements and the International Monetary Fund show that pass-through is typically partial and variable, so policy responses require careful diagnosis: strengthen monetary frameworks, encourage diversified sourcing and invoicing practices, and use hedging selectively to reduce volatility for firms and households.