Risk-Based Capital Standards and the Riskiness of Bank Portfolios: Credit and Factor Risks
Bank risk-based capital (RBC) standards require banks to hold differing amounts of capital for different classes of assets, based almost entirely on a credit risk criterion. The paper provides both a theoretical and empirical framework for evaluating such standards. A model outlining a pricing methodology for loans subject to default risk is presented. The model shows that the returns on such loans are affected by the complicated interaction of the likelihood of default, the consequences of default, term structure variables, and the pricing of factor risks in the economy. When we examine whether the risk weights accurately reflect bank asset risk, we find that the weights fail even in their limited goal of correctly quantifying credit risk. For example, our findings indicate that the RBC weights overpenalize home mortgages, which have an average credit loss of 13 basis points, relative to commercial and consumer loans. The RBC rules also contain a significant bias against direct mortgages relative to mortgage- backed securities. In addition, we find large differences in the credit riskiness of loans within the 100 percent weight class and potentially large benefits to loan diversification, neither of which are considered in the RBC regulations. We also examine other types of bank risk by estimating a simple factor model that decomposes loan risk into term structure, default, and market risk. One implication of our findings is that although banks have reallocated their portfolios in ways intended by the RBC standards, they may have merely substituted one type of risk (term structure risk) for others (default and market risk), of which the net effect is unknown.
|Date of creation:||Jul 1995|
|Date of revision:|
|Publication status:||published as Regional Science and Urban Economics, vol. 26, no. 3-4, pp. 433-464, June 1996|
|Contact details of provider:|| Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.|
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- Merton, Robert C. & Bodie, Zvi, 1993. "Deposit insurance reform: a functional approach," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 38(1), pages 1-34, June.
- Merton, Robert C., 1977. "An analytic derivation of the cost of deposit insurance and loan guarantees An application of modern option pricing theory," Journal of Banking & Finance, Elsevier, vol. 1(1), pages 3-11, June.
- Robert B. Avery & Allen N. Berger, 1990.
"Risk-based capital and deposit insurance reform,"
9101, Federal Reserve Bank of Cleveland.
- Robert A. Jarrow & David Lando & Stuart M. Turnbull, 2008.
"A Markov Model for the Term Structure of Credit Risk Spreads,"
World Scientific Book Chapters,
in: Financial Derivatives Pricing Selected Works of Robert Jarrow, chapter 18, pages 411-453
World Scientific Publishing Co. Pte. Ltd..
- Jarrow, Robert A & Lando, David & Turnbull, Stuart M, 1997. "A Markov Model for the Term Structure of Credit Risk Spreads," Review of Financial Studies, Society for Financial Studies, vol. 10(2), pages 481-523.
- Kane Edward J., 1993. "What Lessons Should Japan Learn from the U.S. Deposit-Insurance Mess?," Journal of the Japanese and International Economies, Elsevier, vol. 7(4), pages 329-355, December.
- Merton, Robert C, 1974.
"On the Pricing of Corporate Debt: The Risk Structure of Interest Rates,"
Journal of Finance,
American Finance Association, vol. 29(2), pages 449-70, May.
- Merton, Robert C., 1973. "On the pricing of corporate debt: the risk structure of interest rates," Working papers 684-73., Massachusetts Institute of Technology (MIT), Sloan School of Management.
- Michael J. Brennan & Eduardo S. Schwartz, 1982. "Consistent Regulatory Policy under Uncertainty," Bell Journal of Economics, The RAND Corporation, vol. 13(2), pages 506-521, Autumn.
- Allen Berger & Gregory Udell, 1994.
"Did Risk-Based Capital Allocate Bank Credit and Cause a `Credit Crunch' in the U.S.?,"
Center for Financial Institutions Working Papers
94-07, Wharton School Center for Financial Institutions, University of Pennsylvania.
- Allen N. Berger & Gregory F. Udell, 1993. "Did risk-based capital allocate bank credit and cause a credit crunch in the U.S.?," Finance and Economics Discussion Series 93-41, Board of Governors of the Federal Reserve System (U.S.).
- Bradley, Michael G. & Wambeke, Carol A. & Whidbee, David A., 1991. "Risk weights, risk-based capital and deposit insurance," Journal of Banking & Finance, Elsevier, vol. 15(4-5), pages 875-893, September.
- Joe Peek & Eric S. Rosengren, 1994. "Bank Real Estate Lending and the New England Capital Crunch," Real Estate Economics, American Real Estate and Urban Economics Association, vol. 22(1), pages 33-58.
- Fama, Eugene F. & French, Kenneth R., 1993. "Common risk factors in the returns on stocks and bonds," Journal of Financial Economics, Elsevier, vol. 33(1), pages 3-56, February.
- Merton, Robert C, 1973. "An Intertemporal Capital Asset Pricing Model," Econometrica, Econometric Society, vol. 41(5), pages 867-87, September.
- Jones, David S. & King, Kathleen Kuester, 1995. "The implementation of prompt corrective action: An assessment," Journal of Banking & Finance, Elsevier, vol. 19(3-4), pages 491-510, June.
- Ben S. Bernanke & Cara S. Lown, 1991. "The Credit Crunch," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 22(2), pages 205-248.
- Cox, John C & Ingersoll, Jonathan E, Jr & Ross, Stephen A, 1985. "A Theory of the Term Structure of Interest Rates," Econometrica, Econometric Society, vol. 53(2), pages 385-407, March.
- Vasicek, Oldrich, 1977. "An equilibrium characterization of the term structure," Journal of Financial Economics, Elsevier, vol. 5(2), pages 177-188, November.
- Shimko, David C, 1989. " The Equilibrium Valuation of Risky Discrete Cash Flows in Continuous Time," Journal of Finance, American Finance Association, vol. 44(5), pages 1357-83, December.
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