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Bank capital regulation in a zero interest environment

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  • Döttling, Robin
Abstract
How do near-zero interest rates affect optimal bank capital regulation and risk-taking? I study this question in a dynamic model, in which forward-looking banks compete imperfectly for deposit funding, but households do not accept negative deposit rates. When deposit rates are constrained by the zero lower bound (ZLB), tight capital requirements disproportionately hurt franchise values and become less effective in curbing excessive risk-taking. As a result, optimal dynamic capital requirements vary with the level of interest rates if the ZLB binds occasionally. Higher inflation and unconventional monetary policy can alleviate the problem, though their overall welfare effects are ambiguous. JEL Classification: G21, G28, E44, E58

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  • Döttling, Robin, 2020. "Bank capital regulation in a zero interest environment," Working Paper Series 2422, European Central Bank.
    • Handle: RePEc:ecb:ecbwps:20202422
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    More about this item

    Keywords

    capital regulation; franchise value; search for yield; unconventional monetary policy; zero lower bound;
    All these keywords.

    JEL classification:

    • 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
    • E43 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Interest Rates: Determination, Term Structure, and Effects

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