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Traditional and Matter-of-fact Financial Frictions in a DSGE Model for Brazil: the role of macroprudential instruments and monetary policy

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  • Fabia A. de Carvalho
  • Marcos R. Castro
  • Silvio M. A. Costa

Abstract

This paper investigates the transmission channel of macroprudential instruments in a closed-economy DSGE model with a rich set of financial frictions. Banks' decisions on risky retail loan concessions are based on borrowers' capacity to settle their debt with labor income. We also introduce frictions in banks' optimal choices of balance sheet composition to better reproduce banks' strategic reactions to changes in funding costs, in risk perception and in the regulatory environment. The model is able to reproduce not only price effects from macroprudential policies, but also quantity effects. The model is estimated with Brazilian data using Bayesian techniques. Unanticipated changes in reserve requirements have important quantitative effects, especially on banks' optimal asset allocation and on the choice of funding. This result holds true even for required reserves deposited at the central bank that are remunerated at the base rate. Changes in required core capital substantially impact the real economy and banks' balance sheet. When there is a lag between announcements and actual implementation of increased capital requirement ratios, agents immediately engage in anticipatory behavior. Banks immediately start to retain dividends so as to smooth the impact of higher required capital on their assets, more particularly on loans. The impact on the real economy also shifts to nearer horizons. Announcements that allow the new regulation on required capital to be anticipated also improve banks' risk positions, since banks achieve higher capital adequacy ratios right after the announcement and throughout the impact period. The effects of regulatory changes to risk weights on bank assets are not constrained to impact the segment whose risk was reassessed. We compare the model responses with those generated by models with collateral constraints traditionally used in the literature. The choice of collateral constraint is found to have important implications for the transmission of shocks to the economy

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Bibliographic Info

Paper provided by Central Bank of Brazil, Research Department in its series Working Papers Series with number 336.

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Date of creation: Nov 2013
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Handle: RePEc:bcb:wpaper:336

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Web page: http://www.bcb.gov.br/?english

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  1. Jiménez, G. & Ongena, S. & Peydro, J.L. & Saurina, J., 2012. "Macroprudential Policy, Countercyclical Bank Capital Buffers and Credit Supply: Evidence from the Spanish Dynamic Provisioning Experiments," Discussion Paper 2012-036, Tilburg University, Center for Economic Research.
  2. Andrea Gerali & Stefano Neri & Luca Sessa & Federico M. Signoretti, 2010. "Credit and Banking in a DSGE Model of the Euro Area," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 42(s1), pages 107-141, 09.
  3. Fabia Aparecida de Carvalho & Cyntia F. Azevedo, 2008. "The incidence of reserve requirements in Brazil: Do bank stockholders share the burden?," Journal of Applied Economics, Universidad del CEMA, vol. 0, pages 61-90, May.
  4. Frank Smets & Raf Wouters, 2007. "Shocks and Frictions in US Business Cycles : a Bayesian DSGE Approach," Working Paper Research 109, National Bank of Belgium.
  5. Carlos Montoro & Ramon Moreno, 2011. "The use of reserve requirements as a policy instrument in Latin America," BIS Quarterly Review, Bank for International Settlements, March.
  6. Brzoza-Brzezina, Michał & Kolasa, Marcin & Makarski, Krzysztof, 2013. "The anatomy of standard DSGE models with financial frictions," Journal of Economic Dynamics and Control, Elsevier, vol. 37(1), pages 32-51.
  7. Matteo Iacoviello, 2002. "House prices, borrowing constraints and monetary policy in the business cycle," Boston College Working Papers in Economics 542, Boston College Department of Economics, revised 06 Dec 2004.
  8. Fiorella De Fiore & Oreste Tristani, 2013. "Optimal Monetary Policy in a Model of the Credit Channel," Economic Journal, Royal Economic Society, vol. 123(571), pages 906-931, 09.
  9. Gertler, Mark & Karadi, Peter, 2011. "A model of unconventional monetary policy," Journal of Monetary Economics, Elsevier, vol. 58(1), pages 17-34, January.
  10. Javier Andrés & Óscar Arce & Carlos Thomas, 2013. "Banking Competition, Collateral Constraints, and Optimal Monetary Policy," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 45(s2), pages 87-125, December.
  11. Scott Roger & Jan Vlcek, 2011. "Macroeconomic Costs of Higher Bank Capital and Liquidity Requirements," IMF Working Papers 11/103, International Monetary Fund.
  12. Christian Glocker & Pascal Towbin, 2012. "Reserve Requirements for Price and Financial Stability: When Are They Effective?," International Journal of Central Banking, International Journal of Central Banking, vol. 8(1), pages 65-114, March.
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