Actuarial & Insurance
Intermediate

Combined Ratio

Total cost ratio: losses plus expenses vs premium.

Formula

CR=LR+ERCR = LR + ER

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Variables

CRCombined ratio
LRLoss ratio
ERExpense ratio

Example

LR=70%, ER=25%: CR = 95% (a 5% underwriting profit)

Did You Know?

A combined ratio below 100% means the insurer profits on underwriting alone, before any investment income.

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