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The misconception of the option value of deposit insurance and the efficacy of non-risk-based capital requirements in the literature on bank capital regulation

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  • Paolo Fegatelli

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    Abstract

    This study shows how the misconception of the option value of deposit insurance by Merton (1977) and its later misuse by Keeley and Furlong (1990), among others, have led some literature supporting the adoption of binding non-risk-based capital requirements to derive incorrect conclusions about their efficacy. This study further shows that what Merton defines as the option value of deposit insurance is actually a component of a bank?s limited liability option under a third-party deposit guarantee. As such, it is already included in the value of the bank?s equity capital, and the flawed definition makes the Keeley-Furlong model internally incoherent.

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    File URL: http://www.bcl.lu/fr/publications/cahiers_etudes/46/BCLWP046.pdf
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    Bibliographic Info

    Paper provided by Central Bank of Luxembourg in its series BCL working papers with number 46.

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    Length: 32 pages
    Date of creation: Jul 2010
    Date of revision:
    Publication status: published in the Journal of Financial Stability, 2010, 6(2):79-84
    Handle: RePEc:bcl:bclwop:bclwp046

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    Web page: http://www.bcl.lu/

    Related research

    Keywords: Capital requirements; Credit risk; Deposit insurance; Prudential regulation; Portfolio approach;

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    Cited by:
    1. Delis, Manthos D & Tran, Kien & Tsionas, Efthymios, 2009. "Quantifying and explaining parameter heterogeneity in the capital regulation-bank risk nexus," MPRA Paper 18526, University Library of Munich, Germany.

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