Glossary

Social inflation

Growth in liability claim costs beyond general price inflation, driven by larger verdicts, litigation funding, advertising and shifting jury attitudes.

Also called: legal system abuse, claims inflation, litigation inflation

Social inflation is the rise in the cost of liability claims that outpaces ordinary economic inflation in wages and prices. Insurers and defense groups attribute it to larger jury awards, expanded theories of liability, plaintiff attorney advertising, third-party litigation funding, anchoring arguments that plant big numbers with jurors, and a more skeptical public view of large companies. The term is contested. Plaintiff lawyers dispute the label and point to insurer pricing and reserving decisions.

The visible evidence is the verdict count. Marathon Strategies counted 190 corporate verdicts of $10 million or more in 2025, up 40.7% from 135 in 2024, totaling more than $25.6 billion in its August 2026 report. Insurers have responded by strengthening reserves on older liability years, raising casualty rates, which the Marsh Global Insurance Market Index showed up 7% in the United States in the second quarter of 2026, and pulling back umbrella and excess capacity.

For a business the effects are concrete: higher umbrella and excess pricing, lower limits per layer, higher attachment points, tougher underwriting questions for trucking, real estate and any exposure to large verdicts, and more pressure on contracts that demand big limits. Early claim reporting and strong defense counsel matter more when a case can turn into a nuclear verdict.

The guide on nuclear verdicts and social inflation: why liability costs keep rising has the detail, and third-party litigation funding and liability insurance covers one driver. See excess liability for where the pressure shows up in premiums.

Last reviewed October 10, 2026

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Related terms

Nuclear verdict A jury verdict of $10 million or more against a business, far above what the economic losses would suggest, that pushes up liability and umbrella costs. Punitive damages Damages awarded to punish and deter malice, fraud or reckless conduct rather than to compensate; whether insurance may pay them depends on state law. Defense costs The attorney fees, expert fees and other expenses of fighting a claim, which some policies pay on top of the limit and others deduct from it. Excess liability Liability coverage that pays only after the limits of underlying policies are used up, adding limit above them without necessarily broadening the terms. Hard market The phase of the insurance cycle when premiums rise, coverage tightens and insurers cut capacity and become pickier about who they will insure.

Related guides

The commercial insurance market outlook as of October 2026 An outlook as of October 2026 from AM Best, Swiss Re, Marsh, CIAB and Triple-I: soft property and cyber, firm casualty and auto, and what could change it. Commercial insurance market report: Q3 2026 July–September 2026 for business buyers: rates by line, Q3 carrier results, cat losses, Hurricane Isaias, M&A, and what to expect at 1/1/2027 renewals. Commercial insurance pricing trends: what the 2026 indexes show Where commercial insurance prices stand in 2026 by line and account size, using Marsh, CIAB, WTW and Ivans data, why the indexes disagree, and how to budget. Emerging risks insurers are watching in 2026 AI, systemic cyber, PFAS, litigation costs, secondary perils and heat are changing policy wording. What insurers are doing and what to ask your broker. Loss reserves and reserve development: why they matter to buyers What an insurer's loss reserves are, how adverse reserve development drives rate increases and failures, and how buyers can read the warning signs. Nuclear verdicts and social inflation: why liability costs keep rising Nuclear verdicts and social inflation push liability claim costs above ordinary inflation. The 2026 data, what drives them, and what business buyers can do.

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