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The Role of Macroprudential Policy in Times of Trouble

Autores 
Ivan De Lorenzo Buratta
Luisa Corrado
Germana Corrado
Jagjit S. Chadha
Ano de Divulgação 
2021
Código JEL 
E32 - Business Fluctuations; Cycles
E44 - Financial Markets and the Macroeconomy
E58 - Central Banks and Their Policies
Resumo 
We develop a DSGE model with heterogeneous agents, where savers own firms and riskpricing banks while borrowers require loans to establish their consumption plans. The bank lends at an external finance premium (EFP) over the policy rate as a function of the asset price, housing collateral, the demand for loans and their perceived riskiness. We suggest that the close relationship between aggregate consumption and house prices is related to collateral effects. We also outline the role of the EFP in determining consumption spillovers between borrowers and lenders. We solve the model with occasionally-binding constraints to examine the redistributive role of macro-prudential policies in terms of welfare. Countercyclical deployment of the loan-to-value constraint placed on borrowers can limit the scale of the downturn from a negative house price shock. Furthermore, when the zero lower bound acts to constrain monetary policy, looser macroprudential policies can act as an effective substitute for lower policy rates. Finally, we show that co-ordinated macroprudential and fiscal policies can also attenuate the welfare losses that arise from uncertainty banks may face about default probabilities.
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