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Document Details :

Title: Community Rating and Equalisation
Author(s): NEUHAUS, W.
Journal: ASTIN Bulletin
Volume: 25    Issue: 2   Date: November 1995   
Pages: 95-118
DOI: 10.2143/AST.25.2.563242

Abstract :
Several countries have made community rating mandatory for certain lines of insurance, particularly health insurance. This paper offers a theoretical solution to the problem of designing equalisation schemes to support community rating in a market where different insurers are selling different benefit plans. The criterion chosen is that an equalisation scheme should minimise the opportunities for arbitrage between insurers, which community rating otherwise would generate. Several possible measures of arbitrage are presented, and the optimal schemes are compared against data from Australian health insurers. Finally, the approach is extended to partial community rating, for example unisex rating.


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