Research on the asymmetry of the impact of monetary policy on bank's risk-taking

摘要

This paper introduces the deposit insurance system, the loan mortgage system and the market structure into the theoretical model, and studies the influence of the monetary policy on the credit supply through the bank's risk-taking channel. The derivation of the theoretical model shows that the monetary policy uses the bank's capital level as the threshold variable and there is a threshold asymmetry to the bank's risk-taking transmission. Under the assumption of perfect competitive market structure, the degree of bank's efforts to supervise loans increases with the increase of interest rate, but under the assumption of monopoly market structure, the bank's risk-taking increases with the increase of interest rate.