Incurred Losses

Incurred losses measure the full expected cost of claims arising from a period of coverage, not just the checks already written. The standard formula is paid losses plus outstanding reserves — where reserves include both the case reserves adjusters set on known open claims and an actuarial provision for IBNR (incurred but not reported) losses. Because a single claim can take years to settle, incurred losses capture the insurer's current estimate of the total bill long before the last claim closes.

Incurred losses matter to a small-business buyer because they are the number underwriters actually use to judge your account — far more than paid losses alone. Your loss run reports incurred figures, and those incurred amounts drive your loss ratio and, in workers' comp, your experience modifier. A claim that has paid out only $5,000 but carries a $60,000 reserve counts as $65,000 incurred against you, which can raise renewal pricing or trigger non-renewal even though most of the money hasn't left the insurer yet. That is why proactively managing open reserves is so valuable.

A practical nuance: incurred losses are an estimate and they change over time through loss development. As adjusters learn more, they adjust case reserves up or down, and as reserves settle, paid losses replace reserves without necessarily changing the total. If your reserves look inflated, ask the carrier to review and, where a claim is truly worth less than reserved, to reduce it before your mod is calculated — a stale over-reserve on a healed injury can cost you real premium dollars for up to three policy years. Incurred losses also differ from ultimate loss, which is the fully developed final figure the incurred estimate is trying to reach.