Research On The Factors Affecting The Net Interest Margin Of Commercial Banks-

In the context of China's interest rate marketization,this paper analyzes the change mechanism of commercial bank's net interest margin,and mainly studies the influencing factors of China's commercial bank net interest margin from the perspective of retail business.In the study of the factors affecting the net interest margin of commercial banks,few scholars specifically studied the impact of retail business on net interest margin.Based on the perspective of retail business,this paper analyzes the factors affecting net interest margin on the basis of H-S model,and decomposes the mechanism of net interest rate change into scale effect and price effect,and analyzes the impact of retail business on net interest margin.In the empirical aspect,this paper uses the panel data of China's listed commercial banks from 2009 to 2018 to conduct a full-sample and group model regression on the factors affecting the net interest margin of commercial banks,and to carry out a flull-sample model regression of scale effect and price effect.The empirical results show that the retail deposit business has a significant positive impact on the net interest margin in state-owned banks and rural commercial banks.The impact on net interest margin is not significant in joint-stock banks,and the net interest margin is more significant in urban commercial banks.Negative impact,and retail deposit business has no significant impact on scale effect and price effect.The retail loan business has a significant positive impact on the net interest margin of rural commercial banks.It has a significant negative impact on the net interest margin of state-owned banks and city commercial banks.The impact on the net interest margin of joint-stock banks is not significant.Significant negative effects have a significant positive impact on the price effect.Based on the conclusions of the empirical research,this paper puts forward corresponding suggestions for commercial banks.