Tayler, William J. and Zilberman, Roy (2021) Optimal Loan Loss Provisions and Welfare. Journal of Macroeconomics, 69: 103338. ISSN 0164-0704
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Abstract
We study the welfare implications of optimal loan loss provisions in a New Keynesian model featuring endogenous default risk and inflationary credit spreads. A unique link between provisions, credit spreads and inflation can be employed to enhance macroeconomic stability. Optimal provisions are most effective when dealing with cost-push financial shocks inherent in volatile spreads and the zero bound problem of monetary policy. Relaxing provisioning requirements following a recessionary financial disturbance consistently achieves the first-best outcome while nullifying the value of monetary policy under commitment. In contrast, deflationary demand shocks warrant an optimal rise in provisions, which inflate prices yet mildly contract output.