Türkiye Ekonomisinde Enflasyon Yapışkanlığı: Güncel Birim Kök Testlerinden Kanıtlar

Inflation has been one of the most important macroeconomic problems in the Turkish economy since the 1970s. Since 1980, the globalization and liberalization process has brought the issue of inflation to the forefront. In the process of combating high inflation, the phenomenon of inflation inertia is important in terms of the cost of economic policies to be implemented. The existence of inflation stickiness increases the cost of anti-inflation policies and reduces the effectiveness of the policies. The aim of this study is to investigate whether there is inflation inertia in the Turkish economy. The data range of the study is set as the period between January 2005 and January 2025. In the study, unit root and stationarity tests based on structural break, RALS, Fourier functions were applied. According to the results of the study, the inflation series exhibits a nonlinear structure. In this context, the findings obtained from unit root tests that take into account the nonlinearity are taken as basis. According to these findings, inflation inertia is found to exist for the Turkish economy.