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Deposit Insurance and Reinsurance: A General Equilibrium Perspective

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  • Gersbach, Hans
  • Haller, Hans
  • Volker, Britz

Abstract

We study the consequences and optimal design of bank deposit insurance and reinsurance in a general equilibrium setting. The model involves two production sectors. One sector is financed by issuing bonds to risk-averse households. Firms in the other sector are monitored and financed by banks. Households fund banks through deposits and equity. Deposits are explicitly insured by a deposit insurance fund. Any remaining shortfall is implicitly guaranteed by the government. The deposit insurance fund charges banks a premium per unit of deposits whereas the government finances any necessary bail-outs by lump-sum taxation of households. When the deposit insurance premium is actuarially fair or higher than actuarially fair, two types of equilibria emerge: One type of equilibria supports the Pareto optimal allocation, and the other type does not. In the latter case, bank lending is too large relative to equity and the probability that the banking system collapses is positive. Next, we show that a judicious combination of deposit insurance and reinsurance eliminates all non-optimal equilibrium allocations. Our paper provides a benchmark result for policy proposals that advocate deposit insurance cum reinsurance.

Suggested Citation

  • Gersbach, Hans & Haller, Hans & Volker, Britz, 2017. "Deposit Insurance and Reinsurance: A General Equilibrium Perspective," CEPR Discussion Papers 11947, C.E.P.R. Discussion Papers.
  • Handle: RePEc:cpr:ceprdp:11947
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    References listed on IDEAS

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    More about this item

    Keywords

    Capital Structure; deposit insurance; Financial Intermediation; General Equilibrium; reinsurance;

    JEL classification:

    • D53 - Microeconomics - - General Equilibrium and Disequilibrium - - - Financial Markets
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • G2 - Financial Economics - - Financial Institutions and Services

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