Retroactive Insurance and Loss Portfolio Transfers

Retroactive Reinsurance

Retroactive reinsurance covers losses from events that have already occurred but whose ultimate costs are uncertain. Unlike prospective reinsurance (which covers future events), retroactive arrangements transfer the development risk on known liabilities. The most common form is the adverse development cover (ADC), where a reinsurer agrees to pay losses exceeding a specified threshold on a defined block of reserves. Loss portfolio transfers (LPTs) go further, transferring the entire liability for a block of claims from the ceding company to the assuming company, including the obligation to pay future claims and allocated loss adjustment expenses.

Actuarial Analysis

Pricing retroactive reinsurance requires a thorough analysis of the ceded reserves. The reinsurer's actuary independently estimates ultimate losses and the expected payout pattern, then discounts future payments at an appropriate investment return rate. The difference between the discounted expected payments and the premium reflects the risk margin and profit. Key considerations include the uncertainty in the reserve estimate (higher uncertainty warrants a higher risk margin), the expected duration of claim payments (longer duration increases the value of investment income), and the potential for adverse development. GAAP accounting for retroactive reinsurance requires prospective treatment of contracts that transfer significant risk, with gain recognition deferred until the outcome is determined.