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Risk and regret aversions on optimal bank interest margin under capital regulation

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  • Tsai, Jeng-Yan
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    Abstract

    This paper examines the bank's optimal loan rate (and thus the bank's interest margin) under more stringent capital regulation when the bank is not only risk-averse but also regret-averse. Risk-averse preferences are characterized by an option-based utility function that includes disutility from the dislike of bank equity risk. Regret-averse preferences feature an option-based utility function that includes disutility from having chosen ex-post suboptimal alternatives. We show that an increase in bank capital requirement results in an increased margin under risk aversion dominating regret aversion, whereas it results in a reduced margin under regret aversion dominating risk aversion. The former holds when risk aversion domination stems from increasing risk-averse preference, but not from decreasing regret-averse preference, while the latter holds when regret aversion domination results from either decreasing risk-averse or increasing regret-averse preference. Risk aversion, as such, makes the bank more prudent and less prone to risk-taking, while regret aversion, as such, makes the bank less prudent and more prone to risk-taking.

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    Bibliographic Info

    Article provided by Elsevier in its journal Economic Modelling.

    Volume (Year): 29 (2012)
    Issue (Month): 6 ()
    Pages: 2190-2197

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    Handle: RePEc:eee:ecmode:v:29:y:2012:i:6:p:2190-2197

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    Web page: http://www.elsevier.com/locate/inca/30411

    Related research

    Keywords: Interest margin; Capital regulation; Regret aversion; Risk aversion;

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    Cited by:
    1. Chang, Chuen-Ping, 2014. "A barrier option framework for rescue package designs and bank default risks," Economic Modelling, Elsevier, vol. 38(C), pages 246-257.
    2. Wong, Kit Pong, 2013. "Fixed versus variable rate loans under state-dependent preferences," Economic Modelling, Elsevier, vol. 31(C), pages 659-663.
    3. 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.
    4. 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.

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