Pecuniary Externalities, Bank Overleverage, and Macroeconomic Fragility
ISER DP No. 1078, March 2020
33 Pages Posted: 16 Mar 2020
Date Written: March 9, 2020
Pecuniary externalities in models with financial friction justify macroprudential policies for preventing economic agents’ excessive risk taking. We extend the Diamond and Rajan (2012) model of banks with the production factors and explore how a pecuniary externality affects a bank’s leverage. We show that the laissez-faire banks in our model take on excessive risks compared with the constrained social optimum. Our numerical simulations suggest that the crisis probability is 2-3 percentage points higher in the laissez-faire economy than in the constrained social optimum.
Keywords: Financial crisis, Liquidity shortage, Maturity mismatch, Credit
JEL Classification: E3, G01, G21
Suggested Citation: Suggested Citation