资本充足率要求对银行收益影响的研究

Study on Influence of the Requirement on the Capital Adequacy to Bank's Yields

充分考虑了商业银行贷款中非正常贷款的本息损失,重新构造了商业银行在信用风险和利率风险下的利润效用最大化模型,研究了央行提高对商业银行资本充足率的要求对收益的影响。变分法和微分分析指出,在充分考虑商业银行的风险损失和风险成本时,央行提高对商业银行资本充足率的要求,对于经营行为特性为Ross概念下递减绝对风险规避的商业银行将增加边际经济利润。

In this paper, the model of the maximum utility of profit margin of commercial banks under the credit risk and the interest risk is reformulated with full consideration of the profile of the losses of bad debts for the commercial banks. The influence of the requirement in the capital adequacy by the central bank to the commercial banks on bank's yields is studied.Analysis shows that considering the risk loss and risk cost of the commercial bank,enhancing the capital adequacy to commercial bank will increase margin profit of commercial bank with decreasing absolute risk avoidance under the Ross concep.