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📝 An '''assumption agreement''' is a contractual arrangement under which one [[Definition:Insurance carrier | insurance company]] agrees to take over — or "assume" — the policy obligations of another insurer, effectively stepping into the original insurer's shoes with respect to a defined block of [[Definition:Insurance policy | insurance policies]]. In the insurance industry, assumption agreements are used primarily in the context of [[Definition:Portfolio transfer | portfolio transfers]], corporate restructurings, [[Definition:Mergers and acquisitions (M&A) | mergers and acquisitions]], and the [[Definition:Run-off | run-off]] of discontinued lines of business. Unlike [[Definition:Reinsurance | reinsurance]], which creates a separate risk-transfer contract between two insurers while leaving the original policyholder relationship intact, an assumption agreement novates the underlying obligation so that the assuming company becomes directly responsible to the [[Definition:Policyholder | policyholders]].

⚙️ Executing an assumption agreement typically requires [[Definition:Regulatory approval | regulatory approval]] from the relevant insurance supervisory authority, because the transaction changes the entity legally responsible for honoring [[Definition:Claim | claims]] and policy benefits. In the United States, state insurance departments review the assuming insurer's [[Definition:Financial strength | financial strength]], [[Definition:Solvency | solvency]], and operational capacity before authorizing the transfer, and policyholders generally must be notified and given the opportunity to object. Under UK and European law, the mechanism known as a [[Definition:Part VII transfer | Part VII transfer]] (in the UK) or an equivalent [[Definition:Insurance business transfer scheme | insurance business transfer scheme]] serves a similar function, with court approval providing finality and legal certainty. In practice, the assuming company receives a transfer of [[Definition:Policy reserves | reserves]] and related [[Definition:Investment asset | invested assets]] in exchange for accepting the liabilities, and the original insurer is released from further obligation once the transfer is complete. The terms of the assumption — including the valuation of reserves, the treatment of pending claims, and any [[Definition:Indemnification | indemnification]] provisions — are negotiated between the parties and scrutinized by regulators and often by independent [[Definition:Actuary | actuaries]].

🔑 Assumption agreements matter because they enable the orderly transfer of insurance obligations in situations where the original carrier is exiting a market, merging with another entity, or winding down a block of business that no longer fits its strategic direction. For policyholders, a properly executed assumption provides continuity of coverage under a financially sound insurer, avoiding the disruption that would result from a carrier's withdrawal or [[Definition:Insolvency | insolvency]]. For the broader market, these transactions facilitate [[Definition:Consolidation | consolidation]] and capital redeployment — the assuming insurer may acquire the portfolio because it has operational expertise, capital efficiency, or strategic interest in the book of business being transferred. The [[Definition:Legacy insurance | legacy]] and run-off market has grown substantially in recent years, with specialized acquirers such as [[Definition:Enstar Group | Enstar]], [[Definition:RiverStone | RiverStone]], and others actively using assumption agreements to consolidate discontinued portfolios from primary insurers and reinsurers around the world.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Portfolio transfer]]
* [[Definition:Novation]]
* [[Definition:Run-off]]
* [[Definition:Part VII transfer]]
* [[Definition:Loss portfolio transfer (LPT)]]
* [[Definition:Reinsurance]]
{{Div col end}}

Definition:Assumption agreement - Revision history

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