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🔄 '''Reinstatement (reinsurance)''' is the restoration of the full limit of a [[Definition:Reinsurance | reinsurance]] layer after that limit has been partially or wholly exhausted by [[Definition:Loss | losses]] during the contract period. Most [[Definition:Excess of loss | excess of loss]] reinsurance contracts provide a finite amount of coverage — for example, $10 million in excess of a $5 million [[Definition:Retention | retention]] — and once a loss erodes that limit, the [[Definition:Cedant | cedant]] would be unprotected for subsequent events unless the limit is reinstated. The reinstatement mechanism addresses this by allowing the original coverage to be restored, typically in exchange for an additional [[Definition:Premium | premium]] known as the reinstatement premium.

💰 Reinstatement terms are negotiated at inception and specified in the reinsurance contract. The most common structure provides one or two reinstatements, each at a stated percentage of the original premium — for example, "one reinstatement at 100%" means the cedant pays an additional premium equal to the full original premium to restore the layer after a loss exhaustion. Some contracts offer reinstatements at reduced percentages (e.g., 50% or even free), while the number of available reinstatements caps the total aggregate protection the contract can deliver. The reinstatement premium is typically calculated pro rata to the amount of limit consumed and, in many markets, pro rata to the time remaining in the contract period — a principle known as "pro rata as to amount and pro rata as to time." In [[Definition:Catastrophe excess of loss | catastrophe excess of loss]] programmes, reinstatement provisions are among the most consequential negotiation points because a single large [[Definition:Catastrophe loss | catastrophe event]] can exhaust a layer entirely, leaving the cedant exposed to a second event within the same year.

🛡️ Reinstatement provisions directly affect how much aggregate protection a reinsurance programme actually delivers and at what total cost. A layer with two free reinstatements provides three times the stated limit in aggregate, making it far more valuable than the same layer with no reinstatement. [[Definition:Actuary | Actuaries]] and [[Definition:Catastrophe model | catastrophe modellers]] explicitly incorporate reinstatement terms when calculating the expected cost and risk-adjusted return of reinsurance layers. [[Definition:Rating agency | Rating agencies]] and regulators — under frameworks such as [[Definition:Solvency II | Solvency II]], [[Definition:Risk-based capital (RBC) | RBC]] in the United States, and [[Definition:C-ROSS | C-ROSS]] in China — consider reinstatement availability when assessing the adequacy of a cedant's reinsurance protection. From the [[Definition:Reinsurer | reinsurer's]] perspective, offering reinstatements increases aggregate exposure and must be priced and reserved for accordingly. The interplay between reinstatement pricing, the number of reinstatements, and the underlying [[Definition:Rate | rate]] of the layer is a defining feature of excess of loss reinsurance structuring worldwide.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Excess of loss]]
* [[Definition:Reinstatement premium]]
* [[Definition:Catastrophe excess of loss]]
* [[Definition:Aggregate limit]]
* [[Definition:Retention]]
* [[Definition:Reinsurance programme]]
{{Div col end}}

Definition:Reinstatement (reinsurance) - Revision history

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