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📐 '''Excess layer''' refers to a specific tier of coverage within a layered insurance or [[Definition:Reinsurance | reinsurance]] program that sits above the [[Definition:Primary insurance | primary]] or lower layers and responds only after the limits beneath it have been fully depleted. In both the direct insurance market and the reinsurance market, structuring risk into discrete layers allows multiple [[Definition:Insurance carrier | carriers]] or [[Definition:Reinsurer | reinsurers]] to participate at different levels of exposure, each accepting a defined band of potential loss rather than the entire risk.

🔗 Each excess layer is defined by two key parameters: its [[Definition:Attachment point | attachment point]] — the dollar amount at which coverage begins — and its limit, which caps the layer's maximum payout. For example, a $10 million excess layer attaching at $5 million would respond to losses between $5 million and $15 million. The primary layer pays first, and if a loss exceeds $5 million, the excess layer absorbs the next $10 million. Multiple excess layers can be stacked to build a [[Definition:Tower of insurance | tower of insurance]], with each successive layer carrying a higher attachment point. [[Definition:Underwriting | Underwriters]] pricing higher layers generally benefit from reduced [[Definition:Loss frequency | loss frequency]] — fewer claims reach those altitudes — but face increased [[Definition:Loss severity | severity]] risk and greater uncertainty, since the claims that do penetrate tend to be catastrophic in nature.

🏗️ Layered programs are foundational to how the commercial and [[Definition:Specialty insurance | specialty insurance]] markets operate. They enable capacity that no single carrier could — or would want to — provide alone, spreading risk efficiently across participants. For [[Definition:Insurance broker | brokers]] and [[Definition:Risk manager | risk managers]], the challenge lies in assembling a tower without coverage gaps and at competitive pricing across all layers. In reinsurance, excess layers are central to [[Definition:Excess-of-loss reinsurance | excess-of-loss treaties]], where a [[Definition:Cedent | cedent]] retains a net amount and cedes specific layers to treaty or [[Definition:Facultative reinsurance | facultative]] reinsurers. The pricing, terms, and willingness of markets to participate at various layers serve as a real-time barometer of capacity and appetite in the broader insurance cycle.

'''Related concepts'''
{{Div col|colwidth=20em}}
* [[Definition:Attachment point]]
* [[Definition:Tower of insurance]]
* [[Definition:Excess-of-loss reinsurance]]
* [[Definition:Primary insurance]]
* [[Definition:Layered program]]
* [[Definition:Quota share reinsurance]]
{{Div col end}}

Definition:Excess layer - Revision history

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