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📋 '''Reserve requirement''' in the insurance context refers to the regulatory or accounting obligation imposed on [[Definition:Insurance carrier | insurers]] and [[Definition:Reinsurer | reinsurers]] to maintain [[Definition:Loss reserve | loss reserves]] and other statutory liabilities at levels sufficient to meet future [[Definition:Claim | claim]] obligations as they come due. Unlike the banking concept of the same name — which mandates that depository institutions hold a fraction of deposits in liquid form — insurance reserve requirements are rooted in [[Definition:Solvency | solvency]] regulation and dictate how an insurer must estimate, record, and report the funds earmarked for unpaid losses, [[Definition:Unearned premium reserve | unearned premiums]], and other contractual commitments.

⚙️ State [[Definition:Department of insurance | insurance regulators]] in the United States, along with international bodies like the [[Definition:International Association of Insurance Supervisors (IAIS) | IAIS]], prescribe minimum standards for how reserves must be calculated and disclosed. Under [[Definition:Statutory accounting principles (SAP) | statutory accounting principles]], an insurer must carry reserves for [[Definition:Case reserve | case]] estimates on reported claims, [[Definition:Incurred but not reported (IBNR) | incurred but not reported]] losses, [[Definition:Loss adjustment expense (LAE) | loss adjustment expenses]], and unearned premiums — among other categories. An [[Definition:Appointed actuary | appointed actuary]] issues an annual [[Definition:Actuarial opinion | actuarial opinion]] attesting to reserve adequacy, and regulators can intervene if reserves fall below acceptable thresholds. Under [[Definition:International Financial Reporting Standards (IFRS) | IFRS 17]], similar obligations apply globally but with different measurement models, including a risk adjustment that functions as a formalized [[Definition:Reserve margin | reserve margin]].

💡 Compliance with reserve requirements is non-negotiable: an insurer that under-reserves risks [[Definition:Regulatory action | regulatory action]], [[Definition:Rating agency | rating]] downgrades, and ultimately the inability to pay [[Definition:Policyholder | policyholders]] when they need it most. Beyond the minimum floor, reserve requirements shape capital planning, [[Definition:Reinsurance | reinsurance]] purchasing strategy, and product pricing. Companies that consistently reserve above regulatory minimums signal financial discipline to the market, while those that hover near the boundary invite heightened scrutiny. For [[Definition:Insurtech | insurtechs]] and newer [[Definition:Managing general agent (MGA) | MGAs]] operating under [[Definition:Delegated underwriting authority (DUA) | delegated authority]], understanding the reserve requirements their carrier partners face is essential to aligning [[Definition:Underwriting guidelines | underwriting practices]] with the financial constraints of the [[Definition:Risk | risk]]-bearing entity.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Loss reserve]]
* [[Definition:Statutory accounting principles (SAP)]]
* [[Definition:Solvency]]
* [[Definition:Unearned premium reserve]]
* [[Definition:Actuarial opinion]]
* [[Definition:Reserve adequacy testing]]
{{Div col end}}

Definition:Reserve requirement - Revision history

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