Glossary term
Real Effective Exchange Rate (REER)
The real effective exchange rate is a trade-weighted currency index adjusted for inflation differences with trading partners.
Updated
Read time
What Is the Real Effective Exchange Rate?
The real effective exchange rate, or REER, is a trade-weighted measure of a currency's value adjusted for inflation differences with trading partners. It is designed to show how a country's currency has changed in real terms against a basket of currencies, not just one exchange rate.
REER is often used as a gauge of international competitiveness. If a country's REER rises, its goods and services may become more expensive relative to trading partners, all else equal. If REER falls, they may become more competitive.
Key Takeaways
- REER measures a currency against a trade-weighted basket of partner currencies.
- It adjusts for relative inflation, unlike a purely nominal exchange rate.
- A rising REER generally indicates real appreciation.
- REER is useful for macro analysis but not a direct trading signal by itself.
How REER Differs From Other Exchange Rates
A bilateral exchange rate compares two currencies, such as the U.S. dollar and the euro. A nominal effective exchange rate compares one currency with a trade-weighted basket of currencies. REER goes one step further by adjusting for inflation or price differences across countries.
Measure | What It Shows |
|---|---|
Bilateral exchange rate | One currency versus another currency. |
Nominal effective exchange rate | Currency versus a trade-weighted basket, before inflation adjustment. |
Real effective exchange rate | Trade-weighted currency value adjusted for relative prices. |
Purchasing power parity | A long-run comparison based on relative price levels. |
What Analysts Watch
REER can help economists, investors, and policymakers assess whether a currency is becoming more or less competitive. A rising REER may pressure exporters because foreign buyers face higher relative prices. A falling REER may support exports but can also reflect inflation, depreciation, or economic stress.
The measure depends on methodology: trade weights, price indexes, base year, and data source can all affect the index. REER should be read as a macro indicator, not a precise statement of fair value.
The Bottom Line
REER adjusts a currency's trade-weighted value for inflation differences with trading partners. It is useful for understanding competitiveness and external conditions, but it should be read with trade data, inflation, policy, and country fundamentals.