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🛡️ '''Reinsurance security''' refers to the financial strength and creditworthiness of a [[Definition:Reinsurer | reinsurer]], evaluated by a [[Definition:Ceding company | ceding company]] to determine the likelihood that the reinsurer will honor its obligations when claims come due. In an industry where the promise to pay may not be tested for years — or even decades in long-tail [[Definition:Line of business | lines]] like [[Definition:Professional liability insurance | professional liability]] or [[Definition:Asbestos liability | asbestos]] — the reliability of a reinsurer's balance sheet is as important as the price of its coverage. Security analysis therefore sits at the heart of every [[Definition:Reinsurance purchasing | reinsurance-purchasing]] decision.

⚙️ Cedents assess reinsurance security through a combination of quantitative and qualitative factors. [[Definition:Rating agency | Rating-agency]] assessments from A.M. Best, S&P Global Ratings, and Moody's provide a baseline, but sophisticated buyers go further, examining a reinsurer's [[Definition:Regulatory capital | capitalization]], [[Definition:Loss reserve | reserving]] adequacy, investment portfolio composition, geographic diversification, and management track record. Many cedents maintain formal security committees that approve or restrict the panel of acceptable reinsurers, assigning internal ratings or limits that govern how much [[Definition:Reinsurance recoverable | recoverable]] exposure may be concentrated with any single counterparty. Regulatory frameworks reinforce these practices: in the United States, [[Definition:Credit for reinsurance | credit-for-reinsurance]] rules determine whether a cedent can reduce its statutory liabilities based on the reinsurer's [[Definition:Admitted reinsurer | admission status]], accreditation, or [[Definition:Reinsurance collateral | collateral]] arrangements.

💡 Weak reinsurance security can turn what appears to be a well-protected portfolio into an unhedged exposure overnight. History offers cautionary examples: the insolvency of reinsurers in past decades left cedents holding uncollectible [[Definition:Reinsurance recoverable | recoverables]] worth billions. This is why diversification across the reinsurer panel, ongoing monitoring of financial condition, and the use of collateral mechanisms remain standard practice. In the [[Definition:Insurance-linked securities (ILS) | ILS]] market, fully [[Definition:Collateralized reinsurance | collateralized]] structures eliminate traditional counterparty credit risk entirely, offering an alternative security model — though they introduce other considerations, such as [[Definition:Basis risk | basis risk]] and the availability of [[Definition:Reinsurance capacity | capacity]] across the [[Definition:Reinsurance market cycle | market cycle]].

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Credit for reinsurance]]
* [[Definition:Rating agency]]
* [[Definition:Reinsurance collateral]]
* [[Definition:Reinsurance recoverable]]
* [[Definition:Collateralized reinsurance]]
* [[Definition:Admitted reinsurer]]
{{Div col end}}

Definition:Reinsurance security - Revision history

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