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Cyclical Adjustment of Capital Requirements: A Simple Framework

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  • Repullo, Rafael

Abstract

We present a simple model of an economy with heterogeneous banks that may be funded with uninsured deposits and equity capital. Capital serves to ameliorate a moral hazard problem in the choice of risk. There is a fixed aggregate supply of bank capital, so the cost of capital is endogenous. A regulator sets risk-sensitive capital requirements in order to maximize a social welfare function that incorporates a social cost of bank failure. We consider the effect of a negative shock to the supply of bank capital and show that optimal capital requirements should be lowered. Failure to do so would keep banks safer but produce a large reduction in aggregate investment. The result provides a rationale for the cyclical adjustment of risk-sensitive capital requirements.

Suggested Citation

  • Repullo, Rafael, 2012. "Cyclical Adjustment of Capital Requirements: A Simple Framework," CEPR Discussion Papers 9008, C.E.P.R. Discussion Papers.
  • Handle: RePEc:cpr:ceprdp:9008
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    References listed on IDEAS

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    1. Shleifer, Andrei & Vishny, Robert W., 2010. "Unstable banking," Journal of Financial Economics, Elsevier, vol. 97(3), pages 306-318, September.
    2. Rafael Repullo & Javier Suarez, 2013. "The Procyclical Effects of Bank Capital Regulation," The Review of Financial Studies, Society for Financial Studies, vol. 26(2), pages 452-490.
    3. Rafael Repullo & Jesús Saurina & Carlos Trucharte, 2010. "Mitigating the pro-cyclicality of Basel II [Bank loan loss provisions: a re-examination of capital management, earnings management and signalling effects]," Economic Policy, CEPR, CESifo, Sciences Po;CES;MSH, vol. 25(64), pages 659-702.
    4. Bengt Holmstrom & Jean Tirole, 1997. "Financial Intermediation, Loanable Funds, and The Real Sector," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 112(3), pages 663-691.
    5. Gordy, Michael B. & Howells, Bradley, 2006. "Procyclicality in Basel II: Can we treat the disease without killing the patient?," Journal of Financial Intermediation, Elsevier, vol. 15(3), pages 395-417, July.
    6. Gertler, Mark & Kiyotaki, Nobuhiro, 2010. "Financial Intermediation and Credit Policy in Business Cycle Analysis," Handbook of Monetary Economics, in: Benjamin M. Friedman & Michael Woodford (ed.), Handbook of Monetary Economics, edition 1, volume 3, chapter 11, pages 547-599, Elsevier.
    7. Repullo, Rafael & Suarez, Javier, 2004. "Loan pricing under Basel capital requirements," Journal of Financial Intermediation, Elsevier, vol. 13(4), pages 496-521, October.
    8. Rafael Repullo, 2005. "Liquidity, Risk Taking, and the Lender of Last Resort," International Journal of Central Banking, International Journal of Central Banking, vol. 1(2), September.
    9. Anil K. Kashyap & Jeremy C. Stein, 2004. "Cyclical implications of the Basel II capital standards," Economic Perspectives, Federal Reserve Bank of Chicago, vol. 28(Q I), pages 18-31.
    10. Samuel G. Hanson & Anil K. Kashyap & Jeremy C. Stein, 2011. "A Macroprudential Approach to Financial Regulation," Journal of Economic Perspectives, American Economic Association, vol. 25(1), pages 3-28, Winter.
    11. Stiglitz, Joseph E & Weiss, Andrew, 1981. "Credit Rationing in Markets with Imperfect Information," American Economic Review, American Economic Association, vol. 71(3), pages 393-410, June.
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    More about this item

    Keywords

    Banking regulation; Basel ii; Capital requirements; Procyclicality;
    All these keywords.

    JEL classification:

    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation

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