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🛡️ '''Aggregate stop-loss insurance''' is a form of [[Definition:Excess insurance | excess insurance]] designed to protect self-funded employers or group health plans from total claims that exceed a predetermined threshold over a defined policy period. Unlike [[Definition:Specific stop-loss insurance | specific stop-loss insurance]], which caps the exposure on any single claimant, aggregate stop-loss coverage addresses the cumulative risk — it triggers when the sum of all claims paid during the contract year surpasses an agreed aggregate attachment point. This product is a cornerstone of the [[Definition:Self-funded health plan | self-funded health plan]] market, giving employers the confidence to retain a meaningful share of their health-benefit risk while capping catastrophic downside.

⚙️ At the start of the policy year, the [[Definition:Insurance carrier | carrier]] or [[Definition:Managing general underwriter (MGU) | MGU]] establishes an aggregate attachment point, often expressed as a percentage — typically 120 % to 125 % — of expected claims. The employer funds claims out of its own reserves throughout the year, and the stop-loss policy reimburses the plan only once cumulative paid claims breach that ceiling. [[Definition:Actuarial analysis | Actuarial analysis]] of the group's demographics, historical [[Definition:Loss experience | loss experience]], and trend factors drives the pricing, while the [[Definition:Claims administrator | claims administrator]] (frequently a [[Definition:Third-party administrator (TPA) | third-party administrator]]) provides the data feed that tracks progress toward the aggregate corridor. Some policies include a monthly accommodation or cash-flow feature that advances partial reimbursements before the contract year closes.

💡 For the broader insurance market, aggregate stop-loss coverage sits at the intersection of group benefits and [[Definition:Reinsurance | reinsurance]]-like risk transfer. Employers that self-fund can achieve meaningful premium savings and plan-design flexibility, but without adequate stop-loss protection a single bad claims year could threaten their financial stability. Carriers competing in this space differentiate on speed of reimbursement, data transparency, and the sophistication of their [[Definition:Predictive analytics | predictive analytics]] for trend projection. As healthcare costs continue to escalate and more mid-market employers shift to self-funding, aggregate stop-loss insurance remains one of the fastest-growing niches in the [[Definition:Employee benefits | employee benefits]] ecosystem.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Specific stop-loss insurance]]
* [[Definition:Self-funded health plan]]
* [[Definition:Third-party administrator (TPA)]]
* [[Definition:Aggregate stop-loss reinsurance]]
* [[Definition:Attachment point]]
* [[Definition:Excess insurance]]
{{Div col end}}

Definition:Aggregate stop-loss insurance - Revision history

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