Understanding Excess of Loss Reinsurance: Definition, Features, and Benefits

What Is Excess of Loss Reinsurance?

Excess of loss reinsurance is a type of non-proportional reinsurance in which the reinsurer indemnifies–or compensates–the ceding company for losses that exceed a specified limit. A reinsurer is a company that provides financial protection to insurance companies; a ceding company is an insurance company that transfers the insurance portfolio to a reinsurer.

Excess of loss reinsurance helps provide financial protection and stability by covering significant losses beyond the insurer’s retention limit, allowing the ceding company to underwrite a larger volume of risks.

Depending on the language of the contract, it can apply to either all loss events during the policy period or losses in aggregate. Treaties might use loss bands that decrease with each claim. Reinsurers and ceding companies use cost calculations like the burning-cost ratio to set prices.

How Excess of Loss Reinsurance Works and Its Benefits

Treaty or facultative reinsurance contracts often specify a limit in losses for which the reinsurer will be responsible. This limit is agreed to in the reinsurance contract; it protects the reinsurance company from dealing with unlimited liability. In this way, treaty and facultative reinsurance contracts are similar to a standard insurance contract, which provides coverage up to a specific amount. While this is beneficial to the reinsurer, it places the onus on the insurance company to reduce losses.

Excess of loss reinsurance takes a different approach than treaty or facultative reinsurance. The reinsurance company is held responsible for the total amount of losses above a certain limit. For example, a reinsurance contract with an excess of loss provision may indicate that the reinsurer is responsible for losses over $500,000. In this case, if aggregate losses amount to $600,000, then the reinsurer will be responsible for $100,000.

Excess of loss reinsurance can also work in a slightly different way. Rather than require the reinsurer to be responsible for all losses over a certain amount, the contract may instead indicate that the reinsurer is responsible for a percentage of losses over that threshold. This means that the ceding company and the reinsurer will share aggregate losses.

For example, a reinsurance contract with an excess of loss provision may indicate that the reinsurer is responsible for 50% of the losses over $500,000. In this case, if aggregate losses amount to $600,000, the reinsurer will be responsible for $50,000 and the ceding company will be responsible for $50,000.

An excess of loss reinsurance policy protects the ceding insurer against large losses, providing more security for its equity and solvency. It can also provide more stability when unusual or major events occur.

Reinsurance lets insurers cover more risks without overly increasing costs, ensuring their solvency margins—the extra value of their assets over liabilities—remain intact. In fact, reinsurance makes substantial liquid assets available for insurers in case of exceptional losses.

The Bottom Line

Excess of loss reinsurance is a non-proportional model where the reinsurer covers losses above a set limit, giving insurers vital financial protection and helping them manage risks effectively. It supports solvency, stabilizes finances during major events, and allows companies to underwrite larger volumes of risk.

Flexible agreements, like sharing losses above thresholds, let insurers tailor coverage to their needs, making it essential to understand contract limits and conditions for strong risk management and stability.