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Optimal insurance for time-inconsistent agents

Author

Listed:
  • Frédéric Cherbonnier

    (TSE-R - Toulouse School of Economics - UT Capitole - Université Toulouse Capitole - UT - Université de Toulouse - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

Abstract

liquidity shocks for time-inconsistent agents who can privately store resources. When lack of self-control is strong enough, optimal contracts are similar to individual nancial accounts with remunerated savings and costly borrowing. The corresponding rate of return decreases with savings, which gives a theoretical rationale for pension accounts with decreasing incentive schemes, as implemented in most developed countries. Extending the model to an innite horizon, we show that, in the presence of repeated shocks, optimal contracts lead to impoverishment almost surely. Usury laws, capping interest rates, worsen this tendency To over-indebtedness for consumers with low risk aversion. By contrast, hidden storage constrains resource allocation for time-consistent agents, so that optimal contracts induce them to accumulate wealth. Those results show how lack of self-control changes the nature of optimal savings and borrowing instruments, with normative implications in terms of tax policy and credit regulation.

Suggested Citation

  • Frédéric Cherbonnier, 2025. "Optimal insurance for time-inconsistent agents," Working Papers hal-04963244, HAL.
    • Handle: RePEc:hal:wpaper:hal-04963244
    Note: View the original document on HAL open archive server: https://hal.science/hal-04963244v1
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