Definition:Earned premium
💵 Earned premium is the portion of a premium that corresponds to the coverage an insurer has already provided as time passes under an active policy. If a policyholder pays $1,200 for a twelve-month policy, the insurer earns $100 for each month that elapses; the remainder — the portion covering future months — is classified as unearned premium and carried as a liability on the balance sheet.
📐 The standard approach is straight-line pro rata earning, which assumes that risk is distributed evenly across the policy period. For most personal and commercial lines this approximation works well, but certain products — such as crop insurance or seasonal event coverages — require non-uniform earning patterns that reflect when the exposure actually peaks. Statutory and GAAP frameworks both require carriers to track earned versus unearned premium carefully, because premature recognition of income distorts profitability metrics and can mask deteriorating loss ratios.
📊 Earned premium serves as the denominator in the loss ratio calculation, making it one of the most foundational figures in insurance financial analysis. A book of business can appear profitable on a written premium basis yet be losing money once premiums are properly earned and matched against incurred losses. For reinsurers, monitoring earned premium on treaty portfolios is equally critical, because timing mismatches between ceded premiums and claims can create significant cash flow implications. Getting the earning pattern right is foundational to every downstream financial metric that stakeholders rely upon.
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