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📍 '''Exhaustion point''' is the precise dollar threshold at which a lower layer of [[Definition:Insurance policy | insurance]] or [[Definition:Reinsurance | reinsurance]] coverage has been fully consumed by paid [[Definition:Claim | claims]], triggering the next layer's obligation to respond. In a [[Definition:Layered insurance program | layered insurance program]], each tier of coverage has a defined [[Definition:Policy limit | limit]]; when cumulative losses reach that limit, the layer is said to be "exhausted." The exhaustion point of one layer is, by design, the [[Definition:Attachment point | attachment point]] of the layer immediately above it, creating the seamless vertical structure that underpins large [[Definition:Commercial insurance | commercial]] and [[Definition:Reinsurance | reinsurance]] programs.

🔄 Determining when exhaustion has actually occurred is more nuanced than it might appear. Disputes frequently arise over whether [[Definition:Defense costs | defense costs]] erode the underlying limit (as in many [[Definition:Professional liability insurance | professional liability]] policies written on a [[Definition:Duty to defend | duty-to-defend]] or [[Definition:Eroding limits | burning limits]] basis) or sit outside the limit calculation. The timing of [[Definition:Loss payment | loss payments]] versus [[Definition:Loss reserve | reserves]] can also complicate matters: some [[Definition:Excess insurer | excess insurers]] require actual payment — not merely reserving — before acknowledging exhaustion. These technical questions are often addressed in the policy's [[Definition:Other insurance clause | other insurance]] and exhaustion provisions, but ambiguity in drafting has generated substantial [[Definition:Coverage litigation | coverage litigation]] over the years.

📐 For [[Definition:Actuarial science | actuaries]], [[Definition:Underwriting | underwriters]], and [[Definition:Risk manager | risk managers]], modeling the probability that losses will reach the exhaustion point of each successive layer is central to program design and pricing. If a layer is priced too cheaply because exhaustion was deemed unlikely, a single severe [[Definition:Loss event | loss event]] or [[Definition:Loss trend | adverse trend]] can trigger unexpected recoveries that cascade through the tower. [[Definition:Reinsurer | Reinsurers]] scrutinize exhaustion assumptions carefully during treaty negotiations, and [[Definition:Insurance broker | brokers]] structuring towers must ensure that the terms governing exhaustion are consistent across all layers to avoid gaps or overlaps in coverage.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Attachment point]]
* [[Definition:Layered insurance program]]
* [[Definition:Excess insurer]]
* [[Definition:Eroding limits]]
* [[Definition:Policy limit]]
* [[Definition:Excess of loss reinsurance]]
{{Div col end}}

Definition:Exhaustion point - Revision history

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