Macroprudential policy analysis in an estimated DSGE model with a heterogeneous banking system: An application to Chile (original) (raw)

Abstract

We quantify the effect of macroprudential policy in mitigating domestic and foreign shocks to a small open commodity based economy estimated on Chilean data. The model features a heterogeneous banking sector and includes financial frictions through collateralized borrowing and unsecured loans with the possibility of endogenous haircuts or default. The estimation shows that shocks affect large and small banks differently through the heterogeneous adjustment of both the composition of assets and the level of liabilities. This implies that countercyclical capital buffers as well as the countercyclical liquidity coverage ratios need to be introduced jointly to maintain financial stability. Countercyclical capital buffers alone cause large and small banks to adjust their balance sheet sizes in opposite directions. Only combined capital and liquidity policies raise both types of banks costs while growing their assets and thus attenuate aggregate credit fluctuations over the business cycle. ☆ We would like to thank Mikhail Dmitriev and Christoffer Koch for helpful comments and suggestions. We also like to thank the participants of

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