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Dynamic Bank Capital Regulation in Equilibrium

Author

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  • Douglas Gale

    (New York University)

  • Andrea Gamba

    (University of Warwick)

  • Marcella Lucchetta

    (Universita Ca' Foscari)

Abstract

We study optimal bank regulation in an economy with aggregate uncertainty. Bank liabilities are used as “money” and hence earn lower returns than equity. In laissez faire equilibrium, banks maximize market value, trading off the funding advantage of debt against the risk of costly default. The capital structure is not socially optimal because external costs of distress are not internalized by the banks. The constrained efficient allocation is characterized as the solution to a planner’s problem. Efficient regulation is procyclical, but countercyclical relative to laissez faire. We show that simple leverage constraints can get the decentralized economy close to the constrained efficient outcome.

Suggested Citation

  • Douglas Gale & Andrea Gamba & Marcella Lucchetta, 2018. "Dynamic Bank Capital Regulation in Equilibrium," 2018 Meeting Papers 680, Society for Economic Dynamics.
    • Handle: RePEc:red:sed018:680
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    References listed on IDEAS

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    Cited by:

    1. Modena, Andrea, 2020. "Recapitalization, bailout, and long-run welfare in a dynamic model of banking," SAFE Working Paper Series 292, Leibniz Institute for Financial Research SAFE.
    2. Pietro Dindo & Andrea Modena & Loriana Pelizzon, 2019. "Risk Pooling, Leverage, and the Business Cycle," Working Papers 2019: 21, Department of Economics, University of Venice "Ca' Foscari".
    3. Andrea Modena, 2020. "Recapitalization, Bailout, and Long-run Welfare in a Dynamic Model of Banking," Working Papers 2020:23, Department of Economics, University of Venice "Ca' Foscari".
    4. Hilscher, Jens & Landskroner, Yoram & Raviv, Alon, 2021. "Optimal regulation, executive compensation and risk taking by financial institutions," Journal of Corporate Finance, Elsevier, vol. 71(C).

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