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📋 '''Inflation''' in the insurance context describes the sustained increase in the cost of goods, services, labor, and materials that directly affects how much insurers ultimately pay to settle [[Definition:Claims | claims]]. While economists discuss inflation in broad macroeconomic terms, for a [[Definition:Property and casualty insurance | property and casualty]] carrier it manifests concretely: rising construction costs inflate [[Definition:Property insurance | property]] claim settlements, escalating medical expenses drive up [[Definition:Workers' compensation insurance | workers' compensation]] and [[Definition:Health insurance | health]] payouts, and expanding jury verdicts—sometimes called [[Definition:Social inflation | social inflation]]—push [[Definition:Liability insurance | liability]] costs beyond actuarial expectations.

📈 Insurers must account for inflation at multiple stages of the business cycle. [[Definition:Actuarial analysis | Actuaries]] build inflation assumptions into [[Definition:Loss reserve | loss reserves]], particularly for long-tail lines where claims may not settle for years after the [[Definition:Policy period | policy period]]. [[Definition:Underwriting | Underwriters]] adjust [[Definition:Premium | premiums]] during [[Definition:Renewal | renewals]] to reflect anticipated cost escalation, and [[Definition:Reinsurer | reinsurers]] revisit [[Definition:Treaty reinsurance | treaty]] pricing when inflation outpaces original projections. When inflation surges unexpectedly—as it did globally in 2021–2023—carriers face [[Definition:Reserve deficiency | reserve deficiencies]] because past estimates no longer cover the true cost of settling open claims, eroding [[Definition:Underwriting profit | underwriting profitability]] and straining [[Definition:Capital adequacy | capital]].

🛡️ Beyond its impact on claims, inflation reshapes investment returns and [[Definition:Solvency | solvency]] dynamics. Rising interest rates, which central banks deploy to combat inflation, can improve [[Definition:Investment income | investment income]] on new fixed-income purchases but simultaneously depress the market value of existing bond portfolios—a tension visible on every carrier's [[Definition:Balance sheet | balance sheet]]. For policyholders, chronic underinsurance becomes a real danger: a [[Definition:Sum insured | sum insured]] set two years ago may no longer rebuild a property at today's prices, making [[Definition:Coinsurance clause | coinsurance]] penalties and coverage gaps more common. Recognizing this, many insurers now offer [[Definition:Inflation guard endorsement | inflation guard endorsements]] that automatically adjust limits at each [[Definition:Renewal | renewal]].

'''Related concepts'''
{{Div col|colwidth=20em}}
* [[Definition:Social inflation]]
* [[Definition:Loss reserve]]
* [[Definition:Inflation guard endorsement]]
* [[Definition:Reserve deficiency]]
* [[Definition:Actuarial analysis]]
* [[Definition:Underinsurance]]
{{Div col end}}

Definition:Inflation - Revision history

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