Definition:Gross written premium (GWP)
💰 Gross written premium (GWP) is the total amount of premium an insurance carrier records on all policies it issues or renews during a specific period, before any deductions for reinsurance cessions or adjustments for the portion of premium not yet earned. It serves as the top-line revenue figure of an insurance operation, analogous to gross sales in other industries, and is the starting point from which virtually every other financial metric — net written premium, gross earned premium, loss ratios, and the combined ratio — is derived.
📐 Each time a carrier binds coverage, the full policy premium is added to GWP regardless of whether the insurer will later cede a portion to a reinsurer under a treaty or facultative arrangement. A mid-size commercial insurer that writes 10,000 policies averaging $50,000 each in a quarter reports $500 million in GWP for that period. Importantly, GWP is a written-basis measure — it reflects when coverage incepts, not when the premium is collected or when it becomes earned over the policy term. This distinction means GWP can surge at renewal dates or during rapid growth phases even if cash flow from premium collections lags. Carriers also track GWP by line of business, distribution channel, and geography to assess where growth originates and whether it aligns with strategic targets.
📈 Beyond internal management, GWP figures command close attention from rating agencies, regulators, investors, and reinsurance partners. Rapid GWP growth may signal market opportunity, but it also raises questions about whether underwriting discipline and reserve adequacy are keeping pace. Rating agencies often compare GWP growth to surplus levels to evaluate leverage, and regulators monitor the ratio of GWP to surplus as a solvency indicator. For MGAs and insurtechs seeking capacity, demonstrating consistent, profitable GWP growth is one of the most persuasive arguments when negotiating with carrier partners for expanded delegated authority.
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