Collateral Constraints and the Interest Rate

Abstract

This paper develops a model in which an increase in financial frictions leads to a fall in the steady‐state rate of interest. A perpetual youth overlapping generations (OLG) model is extended to incorporate a collateral constraint, this results in a transmission mechanism in which an interest rate fall occurs endogenously from a disruption to the credit market. It is found that that non‐linearities exist in the relationship between changes in financial frictions and the interest rate. By specifying the mechanism by means of which this occurs, the model provides an explanation for why low interest rates have been observed with such persistence since the financial crisis.