Community rating is a policy that mandates uniform premium regardless of the risk factors. In this paper, our focus narrows to the single contract interpretation wherein we establish a theoretical framework for community rating using Stiglitz's (1977) monopoly model in which there is a continuum of agents. We exhibit profitability conditions and show that, under mild regularity conditions, the optimal premium is unique and satisfies the inverse elasticity rule. Our numerical analysis, using realistic parameter values, reveals that under regulation, a 10% increase in indemnity is possible with minimal impact on other variables.

翻译：社区定价是一项政策，要求无论风险因素如何，均收取统一保费。本文聚焦于单一合同解释，利用斯蒂格利茨（Stiglitz, 1977）的垄断模型（其中存在连续统的代理人）建立了社区定价的理论框架。我们展示了盈利条件，并证明在温和的正则条件下，最优保费唯一存在且满足逆弹性法则。基于现实参数值的数值分析表明，在监管条件下，赔偿额可增加10%，而对其他变量的影响微乎其微。