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Benefits and Costs of Higher Capital Requirements for Banks

Author

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  • William R. Cline

    (Peterson Institute for International Economics)

Abstract

This study provides new estimates of the likely economic losses from banking crises. It also provides new estimates of the economic cost of increasing bank capital requirements, based on the author's earlier estimate (Cline 2015) of the empirical magnitude of the Modigliani-Miller effect in which higher capital reduces unit cost of equity capital. The study applies previous official estimates (BCBS 2010a) of the impact of higher capital on the probability of banking crises to derive a benefits curve for additional capital, which is highly nonlinear. The benefit and cost curves are examined to identify the socially optimal level of bank capital. This optimum is estimated at about 7 percent of total assets, with a more cautious alternative (75th percentile) at about 8 percent, corresponding to about 12 and 14 percent of riskweighted assets, respectively. These levels are, respectively, about one-fourth to one-half higher than the Basel III capital requirements for the large global systemically important banks (G-SIBs).

Suggested Citation

  • William R. Cline, 2016. "Benefits and Costs of Higher Capital Requirements for Banks," Working Paper Series WP16-6, Peterson Institute for International Economics.
  • Handle: RePEc:iie:wpaper:wp16-6
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    References listed on IDEAS

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    1. Avinash Persaud, 2014. "Why Bail-In Securities Are Fool's Gold," Policy Briefs PB14-23, Peterson Institute for International Economics.
    2. Jihad Dagher & Giovanni Dell'Ariccia & Luc Laeven & Lev Ratnovski & Hui Tong, 2016. "Benefits and Costs of Bank Capital," IMF Staff Discussion Notes 16/04, International Monetary Fund.
    3. Charles W. Calomiris, 2013. "Reforming Banks Without Destroying Their Productivity and Value," Journal of Applied Corporate Finance, Morgan Stanley, vol. 25(4), pages 14-20, December.
    4. 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, April.
    5. Blanchard, Oliver & Cerutti, Eugenio & SUmmers, Lawrence, 2015. "Inflation and Activity - Two Explorations and Their Monetary Policy Implications," Working Paper Series 15-070, Harvard University, John F. Kennedy School of Government.
    6. Ryo Kato & Shun Kobayashi & Yumi Saita, 2010. "Calibrating the Level of Capital: The Way We See It," Bank of Japan Working Paper Series 10-E-6, Bank of Japan.
    7. Rajan, Raghuram G & Zingales, Luigi, 1995. "What Do We Know about Capital Structure? Some Evidence from International Data," Journal of Finance, American Finance Association, vol. 50(5), pages 1421-1460, December.
    8. Helmut Elsinger & Alfred Lehar & Martin Summer, 2006. "Using Market Information for Banking System Risk Assessment," International Journal of Central Banking, International Journal of Central Banking, vol. 2(1), March.
    9. William R. Cline, 2015. "Testing the Modigliani-Miller Theorem of Capital Structure Irrelevance for Banks," Working Paper Series WP15-8, Peterson Institute for International Economics.
    10. William R. Cline, 2014. "Managing the Euro Area Debt Crisis," Peterson Institute Press: All Books, Peterson Institute for International Economics, number 6871, January.
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    Citations

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    Cited by:

    1. Georg Junge & Peter Kugler, 2018. "Optimal equity capital requirements for large Swiss banks," Swiss Journal of Economics and Statistics, Springer;Swiss Society of Economics and Statistics, vol. 154(1), pages 1-21, December.
    2. Ingo Fender & Ulf Lewrick, 2016. "Adding it all up: the macroeconomic impact of Basel II and outstanding reform issues," BIS Working Papers 591, Bank for International Settlements.
    3. Thomas L. Hogan, 2021. "A Review of the Regulatory Impact Analysis of Risk-Based Capital and Related Liquidity Rules," Journal of Risk and Financial Management, MDPI, Open Access Journal, vol. 14(1), pages 1-29, January.
    4. Barth, James R. & Miller, Stephen Matteo, 2018. "Benefits and costs of a higher bank “leverage ratio”," Journal of Financial Stability, Elsevier, vol. 38(C), pages 37-52.
    5. Junge, Georg & Kugler, Peter, 2017. "Optimal equity capital requirements for Swiss G-SIBs," Working papers 2017/11, Faculty of Business and Economics - University of Basel.

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    More about this item

    Keywords

    Financial Regulation; Bank Capital Requirements; Capital Structure;
    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
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill

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