REER · REK
Real Effective Exchange Rate
Short definition
The real effective exchange rate is a trade-weighted nominal rate adjusted for relative inflation. It is a step toward measuring competitiveness without being stuck on one pair (USD/TRY).
Detailed explanation
A REER rise (appreciation) is domestic prices becoming dearer versus abroad; exports get harder, imports cheaper. The index definition (CPI, PPI, country basket) moves the result.
A “high/low” USD/TRY debate is incomplete without REER. A fair-rate claim should look at REER and the external balance, not at spot alone.
Why it matters for the CFO
Price and sourcing may not be competitive just because USD/TRY fell; if REER has appreciated, margin is still squeezed.
How to read it
Index = 100 is not “fair”; it depends on the base and the basket. Read it with the trend and the external balance.
Related calculators
Güven Sayılgan’s writing on this topic
The Importance of the Real Effective Exchange Rate from a Financial Management Perspective
While the nominal exchange rate shows the TRY equivalent of a given currency, the REER allows monitoring the real value of the lira by accounting for Türkiye's
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Read → FinansThe Role of USD/TRY, EUR/TRY and the Real Effective Exchange Rate in Corporate Financial Management Decisions in Türkiye
For companies operating in Türkiye, USD/TRY, EUR/TRY and the real effective exchange rate are complementary indicators; the CFO should read them together for co
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Read → FinansHow Can One Tell Whether the Exchange Rate Is High or Low?
It is not possible to say whether a country’s exchange rate is “high” or “low” by looking at the nominal rate. Nominal levels reflect past inflation, currency r
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Read → FinansWhat Is the “Equilibrium” TL/USD Exchange Rate for Türkiye Today?
The “equilibrium” (equilibrium exchange rate) level cannot be pinned down from a single indicator or theory alone. When EBA, PPP and REER approaches are assesse
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What to learn next
Definitions are educational. They are not investment, credit or tax advice.