The Basel II Accord: Internal ratings and bank defferentiation
The Basel Committee plans to differentiate risk-adjusted capital requirements between banks regulated under the internal ratings based (IRB) approach and banks under the standard approach. We investigate the consequences for the lending capacity and the failure risk of banks in a model with endogenous interest rates. The optimal regulatory response depends on the banks' inclination to increase their portfolio risk. If IRB-banks are well-capitalized or gain little from taking risks, then they will increase their market share and hold safe portfolios. As risk-taking incentives become more important, the optimal portfolio size of banks adopting intern rating systems will be increasingly constrained, and ultimately they may lose market share relative to banks using the standard approach. The regulator has only limited options to avoid the excessive adoption of internal rating systems.
|Date of creation:||2004|
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- Décamps, Jean-Paul & Rochet, Jean-Charles & Roger, Benoît, 2003. "The Three Pillars of Basel II, Optimizing the Mix," IDEI Working Papers 179, Institut d'Économie Industrielle (IDEI), Toulouse.
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- Thakor, Anjan V. & Boot, Arnoud W.A. & Bhattacharya, Sudipto, 1995. "The economics of bank regulation," DEE - Working Papers. Business Economics. WB 7082, Universidad Carlos III de Madrid. Departamento de Economía de la Empresa.
- Craig Furfine, 2001. "Bank Portfolio Allocation: The Impact of Capital Requirements, Regulatory Monitoring, and Economic Conditions," Journal of Financial Services Research, Springer;Western Finance Association, vol. 20(1), pages 33-56, September.
- Reint Gropp & Anthony J. Richards, 2001. "Rating Agency Actions and the Pricing of Debt and Equity of European Banks: What Can we Infer About Private Sector Monitoring of Bank Soundness?," Economic Notes, Banca Monte dei Paschi di Siena SpA, vol. 30(3), pages 373-398, November.
- Gropp, Reint & Richards, Anthony J., 2001. "Rating agency actions and the pricing of debt and equity of European banks: What can we infer about private sector monitoring of bank soundness?," Working Paper Series 0076, European Central Bank.
- Altman, Edward I. & Saunders, Anthony, 2001. "An analysis and critique of the BIS proposal on capital adequacy and ratings," Journal of Banking & Finance, Elsevier, vol. 25(1), pages 25-46, January. Full references (including those not matched with items on IDEAS)
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