Glossary

Underwriter

The insurer's risk evaluator who decides whether to offer coverage, on what terms and at what price, within the authority the company grants.

Also called: commercial underwriter, insurance underwriter, UW

An underwriter is the person at an insurer, a managing general agent or a reinsurer who decides which risks to accept and how to price them. The broker represents the buyer; the underwriter works for the carrier. A commercial underwriter reads the submission, which usually includes the application, loss runs, a statement of values, financials, safety programs and sometimes an inspection report. Then the underwriter checks the account against the company's appetite, chooses forms, limits, deductibles and exclusions, and sets the price from rating plans and judgment, including schedule rating credits and debits.

Authority is tiered. Each underwriter can bind up to a premium size or in certain classes, and anything bigger or unusual is referred to a senior underwriter. The underwriter can issue a binder to start coverage. Small accounts are often quoted by automated rules, with a human underwriter seeing only the referrals.

Brokers and buyers get better terms by answering the underwriter's questions fully and early, because every question reflects something the underwriter is worried about. A clean, complete submission is quoted faster and more favorably than one that arrives in pieces. The guide on underwriting appetite: why one insurer wants you and another doesn't explains why one carrier wants an account and another declines it.

Last reviewed October 10, 2026

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Related terms

Underwriting How an insurer selects, prices and sets terms for risks, and the profit or loss it earns on that business before investment income. Loss run An insurer-issued report listing every claim on a policy over a period, with dates, amounts paid, reserves held and whether each claim is open or closed. Managing general agent (MGA) An agency or underwriting firm that an insurer authorizes by contract to quote, bind and issue policies for a defined book, sometimes handling claims too. Binder Temporary written or oral evidence that coverage is in force on stated terms before the formal policy is issued. Schedule rating An underwriter's credits or debits to manual premium for risk traits that manual rates miss, such as premises condition, safety program or management quality.

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