The Manipulation of Basel Risk-Weights
In this paper, we examine the relationship between banks’ approval for the internal ratings-based (IRB) approaches of Basel II and the ratio of risk-weighted over total assets. Analysing a panel of 115 banks from 21 OECD countries that were eventually approved for applying the IRB to their credit portfolio, we find that risk-weight density is lower once regulatory approval is granted. The effect persists when we control for different loan categories, and we provide evidence showing that it cannot be explained by flawed modelling, or improved risk-measurement alone. Consistent with theories of risk-weight manipulation, we find the decline in risk-weights to be particularly prevalent among weakly capitalised banks, when the legal framework for supervision is weak, and in countries where supervisors are overseeing many IRB banks. We conclude that part of the decline in reported riskiness under the IRB results from banks’ strategic risk-modelling.
|Date of creation:||May 2013|
|Date of revision:|
|Contact details of provider:|| Postal: Centre for Economic Policy Research, 77 Bastwick Street, London EC1V 3PZ.|
Phone: 44 - 20 - 7183 8801
Fax: 44 - 20 - 7183 8820
|Order Information:|| Email: |
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Enrico Perotti & Lev Ratnovski & Razvan Vlahu, 2011.
"Capital Regulation and Tail Risk,"
International Journal of Central Banking,
International Journal of Central Banking, vol. 7(4), pages 123-163, December.
- Enrico Camillo Perotti & Lev Ratnovski & Razvan Vlahu, 2011. "Capital Regulation and Tail Risk," IMF Working Papers 11/188, International Monetary Fund.
- Enrico Perotti & Lev Ratnovski & Razvan Vlahu, 2011. "Capital Regulation and Tail Risk," Tinbergen Institute Discussion Papers 11-039/2/DSF14, Tinbergen Institute, revised 31 Mar 2011.
- Enrico Perotti & Lev Ratnovski & Razvan Vlahu, 2011. "Capital Regulation and Tail Risk," DNB Working Papers 307, Netherlands Central Bank, Research Department.
- Perotti, Enrico C & Ratnovski, Lev & Vlahu, Razvan, 2011. "Capital Regulation and Tail Risk," CEPR Discussion Papers 8526, C.E.P.R. Discussion Papers.
- Anat Admati & Martin Hellwig, 2013. "The Bankers' New Clothes: What's Wrong with Banking and What to Do about It," Economics Books, Princeton University Press, edition 1, number 9929, 06-2016.
- Mariathasan, Mike & Merrouche, Ouarda & Werger, Charlotte, 2014. "Bailouts And Moral Hazard: How Implicit Government Guarantees Affect Financial Stability," CEPR Discussion Papers 10311, C.E.P.R. Discussion Papers.
- Sofiya Avramova & Vanessa Le LeslÃ©, 2012. "Revisiting Risk-Weighted Assets," IMF Working Papers 12/90, International Monetary Fund.
- Blum, Jürg M., 2008. "Why 'Basel II' may need a leverage ratio restriction," Journal of Banking & Finance, Elsevier, vol. 32(8), pages 1699-1707, August.
- Martin Hellwig, 2010.
"Capital Regulation after the Crisis: Business as Usual?,"
Working Paper Series of the Max Planck Institute for Research on Collective Goods
2010_31, Max Planck Institute for Research on Collective Goods.
- Martin Hellwig, 2010. "Capital Regulation after the Crisis: Business as Usual?," CESifo DICE Report, Ifo Institute - Leibniz Institute for Economic Research at the University of Munich, vol. 8(2), pages 40-46, 07.
- Calem, Paul & Rob, Rafael, 1999. "The Impact of Capital-Based Regulation on Bank Risk-Taking," Journal of Financial Intermediation, Elsevier, vol. 8(4), pages 317-352, October.
- Acharya, Viral V & Schnabl, Philipp & Suarez, Gustavo, 2012.
"Securitization Without Risk Transfer,"
CEPR Discussion Papers
8769, C.E.P.R. Discussion Papers.
- Mitchell A. Petersen, 2009.
"Estimating Standard Errors in Finance Panel Data Sets: Comparing Approaches,"
Review of Financial Studies,
Society for Financial Studies, vol. 22(1), pages 435-480, January.
- Mitchell A. Petersen, 2005. "Estimating Standard Errors in Finance Panel Data Sets: Comparing Approaches," NBER Working Papers 11280, National Bureau of Economic Research, Inc.
- Sandra E. Black & Philip E. Strahan, 2002. "Entrepreneurship and Bank Credit Availability," Journal of Finance, American Finance Association, vol. 57(6), pages 2807-2833, December.
- Keeley, Michael C. & Furlong, Frederick T., 1990. "A reexamination of mean-variance analysis of bank capital regulation," Journal of Banking & Finance, Elsevier, vol. 14(1), pages 69-84, March.
- Huizinga, Harry & Laeven, Luc, 2012. "Bank valuation and accounting discretion during a financial crisis," Journal of Financial Economics, Elsevier, vol. 106(3), pages 614-634.
- Mike Mariathasan & Ouarda Merrouche, 2012. "Recapitalization, credit and liquidity," Economic Policy, CEPR;CES;MSH, vol. 27(72), pages 603-646, October.
- 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.
- James J. Heckman, 1976. "The Common Structure of Statistical Models of Truncation, Sample Selection and Limited Dependent Variables and a Simple Estimator for Such Models," NBER Chapters, in: Annals of Economic and Social Measurement, Volume 5, number 4, pages 475-492 National Bureau of Economic Research, Inc.
When requesting a correction, please mention this item's handle: RePEc:cpr:ceprdp:9494. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: ()
If references are entirely missing, you can add them using this form.