Translated Abstract
Net interest income is the main source of profit for commercial banks, and it is also an important indicator of its operating efficiency. At the end of 2015, the central bank has completely canceled the floating rate of deposit and lending interest rates, the initial completion of interest rate market. Therefore, it is of great significance to measure the factors that affect the net profit margin of commercial banks in the context of interest rate marketization.
Based on the basic model of the transaction of Ho-Saunders, this paper starts from the domestic and foreign basic research.First,we discuss the following four aspects:the quantitative measure of interest rate marketization level, the caliber of bank net profit difference, the influencing factors of bank net interest margin and theoretical model.Second, the interest rate marketization index is constructed by combing the reform process of China＇s interest rate marketization. Third, based on the panel data of 25 commercial banks in China from 2007 to 2015, this paper analyzes the direction and significance of the influence of various factors on the net profit margin of commercial banks from the perspective of the establishment of fixed effect model. Fourth, based on the theories and conclusions of this paper , it puts forward the corresponding policy suggestions from the commercial banks themselves and the macro - control.
The results of this paper show that interest rate marketization has a significant impact on the net interest margin of China＇s commercial banks, and it is also the most important factor affecting the net profit margin of China＇s commercial banks. The interest rate marketization has a significant relationship with the net profit margin of commercial banks. However, the impact of interest rate marketization on large state-owned banks is not significant, while the joint-stock banks and urban commercial banks and other small and medium-sized banks have a more significant impact. In addition to the marketization of interest rates, the operating costs and inflation rates are significantly positively correlated with the net profit margin of commercial banks. Risk avoidance, transaction size, credit risk, intermediate business income and cost income are significantly negatively correlated with commercial bank net interest margin. Among them, the two factors that affect the net interest margin of commercial banks in China are: operating cost and transaction scale. Based on the above conclusions, this paper puts forward the corresponding policy suggestions from the commercial banks themselves and the macro - control.
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