Definition:Claims-made policy
📋 Claims-made policy is a form of liability insurance that covers losses only when the claim is first reported to the insurer during the active policy period — regardless of when the underlying incident actually occurred, provided it took place after a designated retroactive date. This structure contrasts sharply with the occurrence policy, which triggers coverage based on when the event happened, even if the claim surfaces years later. Claims-made coverage is the dominant form for professional lines such as directors and officers (D&O), errors and omissions (E&O), and medical malpractice insurance.
⚙️ Under a claims-made form, the insurer's exposure is bounded by two temporal anchors: the retroactive date, before which no claims are eligible, and the policy's expiration date, after which new reports fall outside coverage unless the insured purchases an extended reporting period — commonly known as "tail coverage." When a policyholder switches carriers or lets coverage lapse, the gap between policies can leave prior acts unprotected, which is why prior acts coverage negotiations are a critical part of the underwriting and brokering process. Insurers favor the claims-made trigger for long-tail lines because it gives them greater control over reserving; they can more accurately match premiums collected in a given year to the claims reported in that same year.
🔍 For insurers, the claims-made structure materially reduces the uncertainty associated with incurred-but-not-reported (IBNR) liabilities, making actuarial analysis and loss ratio projections more reliable. Policyholders, on the other hand, must be vigilant about maintaining continuous coverage and understanding the implications of the retroactive date — a gap or a moved-forward retroactive date can silently eliminate protection for past professional acts. The distinction between claims-made and occurrence policies also has significant reinsurance implications: reinsurers pricing excess-of-loss treaties on claims-made books face a different development pattern than they do on occurrence portfolios, affecting both ceded premium calculations and commutation negotiations.
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