THE OPTIMAL DEDUCTIBLE AND COVERAGE IN INSURANCE CONTRACTS AND EQUILIBRIUM RISK SHARING POLICIES*

  • Lingling Jian
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  • School of Mathematical Sciences, Nankai University, Tianjin 300071, China
Lingling Jian, E-mail: janejzh@163.com

Received date: 2021-09-14

  Revised date: 2022-01-27

  Online published: 2023-06-06

Supported by

NSF of China (11931018, 12271274) and the Tianjin Natural Science Foundation (19JCYBJC30400).

Abstract

In this paper, we consider the optimal risk sharing problem between two parties in the insurance business: the insurer and the insured. The risk is allocated between the insurer and the insured by setting a deductible and coverage in the insurance contract. We obtain the optimal deductible and coverage by considering the expected product of the two parties' utilities of terminal wealth according to stochastic optimal control theory. An equilibrium policy is also derived for when there are both a deductible and coverage; this is done by modelling the problem as a stochastic game in a continuous-time framework. A numerical example is provided to illustrate the results of the paper.

Cite this article

Lingling Jian . THE OPTIMAL DEDUCTIBLE AND COVERAGE IN INSURANCE CONTRACTS AND EQUILIBRIUM RISK SHARING POLICIES*[J]. Acta mathematica scientia, Series B, 2023 , 43(3) : 1347 -1364 . DOI: 10.1007/s10473-023-0320-3

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