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Do capital buffers mitigate volatility of bank lending? A simulation study

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  • Heid, Frank
  • Krüger, Ulrich

Abstract

Critics claim that capital requirements can exacerbate credit cycles by restricting lending in an economic downturn. The introduction of Basel 2, in particular, has led to concerns that risksensitive capital charges are highly correlated with the business cycle. The Basel Committee is contemplating a revision of the Basel Accord by introducing counter-cyclical capital buffers. Others claim that capital buffers are already large enough to absorb fluctuations in credit risk. We address the question of the pro-cyclical effects of capital requirements in a general framework which takes into account banks' potential adjustment strategies. We develop a dynamic model of bank lending behavior and simulate different regulatory frameworks and macroeconomic scenarios. In particular, we address two related questions in our simulation study: How do business fluctuations affect capital requirements and bank lending? To what extent does the capital buffer absorb fluctuations in the level of mimimum required capital?

Suggested Citation

  • Heid, Frank & Krüger, Ulrich, 2011. "Do capital buffers mitigate volatility of bank lending? A simulation study," Discussion Paper Series 2: Banking and Financial Studies 2011,03, Deutsche Bundesbank.
  • Handle: RePEc:zbw:bubdp2:201103
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    References listed on IDEAS

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    1. Eva Catarineu-Rabell & Patricia Jackson & Dimitrios Tsomocos, 2005. "Procyclicality and the new Basel Accord - banks’ choice of loan rating system," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 26(3), pages 537-557, October.
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    Cited by:

    1. Tsai, Jeng-Yan, 2013. "Optimal bank interest margins under capital regulation in a call-option utility framework," Economic Modelling, Elsevier, vol. 31(C), pages 557-565.
    2. Sonia Chawla & Seema Rani, 2019. "Conundrum of Non-performing Assets Over Two Decades: An Analysis of Punjab National Bank," Management and Labour Studies, XLRI Jamshedpur, School of Business Management & Human Resources, vol. 44(3), pages 263-284, August.
    3. Lin, Jyh-Horng & Hung, Wei-Ming, 2013. "A barrier option framework for bank interest margin management under anticipatory regret aversion," Economic Modelling, Elsevier, vol. 33(C), pages 794-801.
    4. Tsai, Jeng-Yan, 2013. "Bank interest margin management based on a path-dependent Cobb–Douglas utility framework," Economic Modelling, Elsevier, vol. 35(C), pages 751-762.
    5. Li, Xuelian & Lin, Jyh-Horng, 2016. "Shadow-banking entrusted loan management, deposit insurance premium, and capital regulation," International Review of Economics & Finance, Elsevier, vol. 41(C), pages 98-109.

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    More about this item

    Keywords

    Minimum capital requirements; regulatory capital; capital buffer; cyclical lending; pro-cyclicality;
    All these keywords.

    JEL classification:

    • C61 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Optimization Techniques; Programming Models; Dynamic Analysis
    • E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles
    • 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

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