Impact of Lira, Dollar, and Euro Fluctuations on the Real Effective Exchange Rate (REK) Index

Today, Monday, July 6, 2026, the Central Bank of the Republic of Turkey (TCMB) released its monthly report on the Real Effective Exchange Rate (REK) index for June. According to this report, which has been widely reflected in economic media including the "24 Saat Gazetesi" in Ankara, recent fluctuations of the Lira against a basket of foreign currencies, particularly the Dollar and Euro, have had a direct impact on the real value of Turkey's national currency [2].

Analysis of New REK Index Data in June 2026 According to statistics released by the Central Bank's Statistics Directorate, the Consumer Price Index (TÜFE)-based Real Effective Exchange Rate index decreased by 0.80 points in June compared to the previous month, reaching 104.90 [1]. This is while the index stood at 105.70 in May. This decrease indicates that the Turkish Lira lost value against its main trading partners last month after adjusting for domestic and foreign inflation rates. Interestingly, the REK index had reached its highest level in six years in April 2026, but is now experiencing a downward trend for the second consecutive month [3].

The Role of the Dollar and Euro in Lira Value Fluctuations Analytical reports show that the main factor behind these changes has been the rise in Dollar and Euro parity rates in the Turkish free market. In June, the US Dollar strengthened by an average of 1.81% and the Euro by approximately 0.42% against the Turkish Lira [2]. During the same period, consumer inflation in Turkey increased by 0.99%. Although domestic inflation causes the index to rise, the jump in foreign exchange rates (Dollar and Euro) neutralized the inflation effect and ultimately led to a decrease in the overall REK index. This situation means that the Lira has become cheaper in international markets, making Turkish-produced goods more attractive to foreign buyers [1].

Difference Between Consumer and Producer Indices A noteworthy point in the July 6 report is the difference in behavior across different indices. While the consumer price-based index decreased, the Domestic Producer Price Index (Yİ-ÜFE)-based Real Effective Exchange Rate increased by 0.70 points to 100.98 [2]. This contrast indicates the pressure of production costs on the Turkish economy. The increase in producer prices within the country has occurred at a faster pace than currency fluctuations, which could threaten the profit margins of exporters in the long run. Economic analysts in Ankara believe that managing this gap between production costs and exchange rates will be the main challenge for the government's economic team in the second half of 2026 [3].

Economic Outlook and Impact on Exports A decrease in the REK index is usually regarded as a positive signal for the export sector. With the real depreciation of the Lira, Turkish exporters in the automotive, textile, and food sectors can expand their market share in Europe and the Middle East [1]. However, given that the Dollar rate reached a historical record of 46.82 Lira in early July 2026, concerns about imported inflation resulting from the purchase of raw materials and energy remain. The Central Bank of Turkey has announced that it will continue its monetary policies to maintain a balance between supporting exports and controlling inflation to prevent sharp and unpredictable fluctuations in the REK index [2].