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🏗️ '''Excess carrier''' is an [[Definition:Insurance carrier | insurance carrier]] that provides [[Definition:Coverage | coverage]] above the limits of a primary or underlying [[Definition:Policy | policy]], responding only after the [[Definition:Policyholder | policyholder's]] primary insurance — and any intervening layers — has been exhausted. In commercial insurance programs, excess carriers occupy defined layers of a [[Definition:Tower of insurance | coverage tower]]: a company might carry $5 million in [[Definition:Primary insurance | primary]] [[Definition:General liability insurance | general liability]], then a first excess layer of $10 million, followed by additional excess or [[Definition:Umbrella insurance | umbrella]] layers that push the total program limit into the hundreds of millions. The excess carrier's obligation is triggered only when losses in a covered occurrence breach the [[Definition:Attachment point | attachment point]] of its layer.

🔧 Excess policies generally "follow form," meaning they adopt the terms, conditions, and [[Definition:Exclusion | exclusions]] of the underlying primary policy rather than introducing an entirely separate contract. This alignment simplifies claims handling and reduces gaps, though excess carriers may add specific provisions — such as broader territory definitions, additional [[Definition:Insured | insured]] endorsements, or narrower coverage grants — that diverge from the primary form. When a large [[Definition:Claim | claim]] pierces the primary limits, the excess carrier steps in to pay the portion of the loss that falls within its layer, up to its own [[Definition:Limit of liability | limit]]. In multi-layer programs, coordinating [[Definition:Claims adjuster | claims adjusting]] across multiple carriers requires careful attention to policy language and interlayer communication.

📊 The role of excess carriers is indispensable to the way large and complex organizations finance [[Definition:Risk | risk]]. Without the ability to layer coverage, a single carrier would need enormous [[Definition:Capacity | capacity]] to insure a Fortune 500 company's full liability exposure — an impractical concentration of risk. By distributing the program across multiple carriers at different attachment points, each carrier manages a bounded slice of [[Definition:Exposure | exposure]], and the total available limit can scale to meet the [[Definition:Insured | insured's]] needs. For [[Definition:Reinsurance | reinsurers]] and [[Definition:Lloyd's syndicate | Lloyd's syndicates]], writing excess layers is a significant book of business, and pricing these layers demands granular analysis of the underlying portfolio's [[Definition:Loss development | loss development]] patterns and the probability that losses will reach higher attachment points.

'''Related concepts'''
{{Div col|colwidth=20em}}
* [[Definition:Primary insurance]]
* [[Definition:Umbrella insurance]]
* [[Definition:Attachment point]]
* [[Definition:Tower of insurance]]
* [[Definition:Follow-form policy]]
* [[Definition:Limit of liability]]
{{Div col end}}

Definition:Excess carrier - Revision history

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