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A Theory of Precautionary Regulatory Capital in Banking

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  • Phong T. H. Ngo

Abstract

The orthodox assumption in the banking literature is that capital requirements are a binding constraint on banking behaviour. This is in conflict with the empirical observation that banks hold a bu¤er of capital well in excess of the minimum requirements. This paper develops a model where capital is endogenously determined within a profit maximising equilibrium. Optimality involves balancing the reduction in expected costs associated with regulatory breach with the excess cost of financing from increasing capital. We demonstrate that when the equilibrium probability of regulatory breach is less than one half, banks are expected to hold precautionary capital.

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Bibliographic Info

Paper provided by Australian National University, College of Business and Economics, School of Economics in its series ANU Working Papers in Economics and Econometrics with number 2006-465.

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Length: 37 pages
Date of creation: May 2006
Date of revision:
Handle: RePEc:acb:cbeeco:2006-465

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  1. Santomero, Anthony M & Watson, Ronald D, 1977. "Determining an Optimal Capital Standard for the Banking Industry," Journal of Finance, American Finance Association, vol. 32(4), pages 1267-82, September.
  2. Pringle, John J, 1974. "The Capital Decision in Commercial Banks," Journal of Finance, American Finance Association, vol. 29(3), pages 779-95, June.
  3. Mingo, John J, 1975. "Regulatory Influence on Bank Capital Investment," Journal of Finance, American Finance Association, vol. 30(4), pages 1111-21, September.
  4. Baltensperger, Ernst, 1974. "The Precautionary Demand for Reserves," American Economic Review, American Economic Association, vol. 64(1), pages 205-10, March.
  5. Keeley, Michael C, 1990. "Deposit Insurance, Risk, and Market Power in Banking," American Economic Review, American Economic Association, vol. 80(5), pages 1183-1200, December.
  6. Frederick T. Furlong & Michael C. Keeley, 1991. "Capital regulation and bank risk-taking: a note (reprinted from Journal of Banking and Finance)," Economic Review, Federal Reserve Bank of San Francisco, issue Sum, pages 34-39.
  7. Baltensperger, Ernst, 1980. "Alternative approaches to the theory of the banking firm," Journal of Monetary Economics, Elsevier, vol. 6(1), pages 1-37, January.
  8. Furlong, Frederick T. & Keeley, Michael C., 1989. "Capital regulation and bank risk-taking: A note," Journal of Banking & Finance, Elsevier, vol. 13(6), pages 883-891, December.
  9. Giammarino, Ronald M & Lewis, Tracy R & Sappington, David E M, 1993. " An Incentive Approach to Banking Regulation," Journal of Finance, American Finance Association, vol. 48(4), pages 1523-42, September.
  10. Allen N. Berger & Richard J. Herring & Giorgio P. Szegö, 1995. "The Role of Capital in Financial Institutions," Center for Financial Institutions Working Papers 95-01, Wharton School Center for Financial Institutions, University of Pennsylvania.
  11. Kim, Daesik & Santomero, Anthony M, 1988. " Risk in Banking and Capital Regulation," Journal of Finance, American Finance Association, vol. 43(5), pages 1219-33, December.
  12. Milne, Alistair, 2002. "Bank capital regulation as an incentive mechanism: Implications for portfolio choice," Journal of Banking & Finance, Elsevier, vol. 26(1), pages 1-23, January.
  13. Kahane, Yehuda, 1977. "Capital adequacy and the regulation of financial intermediaries," Journal of Banking & Finance, Elsevier, vol. 1(2), pages 207-218, October.
  14. George G. Kaufman, 1991. "Capital in banking: past, present and future," Working Paper Series, Issues in Financial Regulation 91-10, Federal Reserve Bank of Chicago.
  15. Mingo, John J & Wolkowitz, Benjamin, 1977. "The Effects of Regulation on Bank Balance Sheet Decisions," Journal of Finance, American Finance Association, vol. 32(5), pages 1605-16, December.
  16. Peltzman, Sam, 1970. "Capital Investment in Commercial Banking and Its Relationship to Portfolio Regulation," Journal of Political Economy, University of Chicago Press, vol. 78(1), pages 1-26, Jan.-Feb..
  17. Marcus, Alan J, 1983. " The Bank Capital Decision: A Time Series-Cross Section Analysis," Journal of Finance, American Finance Association, vol. 38(4), pages 1217-32, September.
  18. Zarruk, Emilio R. & Madura, Jeff, 1992. "Optimal Bank Interest Margin under Capital Regulation and Deposit Insurance," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 27(01), pages 143-149, March.
  19. Koehn, Michael & Santomero, Anthony M, 1980. " Regulation of Bank Capital and Portfolio Risk," Journal of Finance, American Finance Association, vol. 35(5), pages 1235-44, December.
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