Big Mac Index Reveals the Real Dollar Rate for Turkey

Turkey’s 47.50 TL market rate, contrasted with the 65 TL purchasing power parity (PPP) rate suggested by the Big Mac Index, underscores that exchange‑rate pricing cannot be judged by a superficial view alone.

Market Rate vs. Big Mac Index

The market rate reflects a mix of supply‑demand dynamics, interest‑rate spreads, risk premiums and central‑bank interventions. PPP, on the other hand, estimates a “fair” rate by comparing the price of an identical product (Big Mac) across countries. The two approaches yield a stark gap between 47.50 TL and 65 TL.

PPP Calculation and the Resulting Figure

■Global average Big Mac price: $5

■Big Mac price in Turkey: 325 TL

■Conversion at market rate: $6.84 (≈ 37 % more expensive)

■Theoretical PPP rate derived from the index: 65 TL

The 17.50 TL Gap Between Market and PPP Rates

■Inflation pressure: A 65 TL rate would lift import costs, feeding higher inflation.

■GDP conversion: At 47.50 TL, GDP ≈ $1.658 billion, per‑capita income $18,621; at 65 TL, GDP ≈ $1.189 billion, per‑capita income $13,745.

■Credit cost: A depreciating lira raises the local‑currency cost of foreign‑currency debt, stressing banks’ loan books.

■Policy signal: Keeping the exchange rate below its “real” level intensifies pressure for tighter monetary policy.

Re‑Assessing Turkey’s Macro Policy Through the Lens of PPP

Focusing solely on the nominal rate ignores Turkey’s vulnerability in energy and intermediate‑goods imports. The PPP‑derived rate signals that policymakers need to revisit the interplay between exchange rates, external balances and credit risk within a holistic framework.

Kerem Tufan – Director of Commercial Credit and Central Bank Policies. The Big Mac Index serves as a warning sign of structural weaknesses in Turkey’s exchange‑rate dynamics. Steering the lira based on speculative moves alone is risky; anchoring it to long‑term PPP measures is essential for preserving loan‑portfolio quality and overall financial stability.