Özet:

The profitability of banking operations has an important both effectiveness of financial sector and funding of real sector in developing financial systems. It is desirable that a high rate of net interest margin and return on assets which are banking performance indicators to sustain the activities of the banks and to compete.Accordingly, the purpose of the study is to put forward the determinants of profitability in Turkish banking system. Net interest margin and return on assets are used as a profitability indicators. Determining internal and external factors affecting the profitability are tested by panel data analysis. According to the results there is significant relation between leverage ratio, credit/deposit ratio, market capitalization of the internal ratio; gross domestic product of the external variables and profitability.

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