Legal Professional Liability Insurers Post Strong Results Despite Rising Social Inflation Pressures
Legal professional liability insurers have navigated a decade of variable underwriting results while delivering superior operating performance compared to their commercial casualty counterparts, according to an AM Best market segment report.
In eight of the last 10 years, the specialty LPL composite posted a better operating ratio than the commercial casualty composite, reaching 58.7 in 2024 versus 84.7 for commercial casualty. AM Best attributed that advantage primarily to the composite’s considerable aggregate net investment ratio, calculated as net investment income as a percentage of net premiums earned.
The specialty LPL composite tracked by AM Best includes 16 insurers — eight rated by AM Best and eight unrated — covering companies that insure law firms across the full range of sizes. Aggregate net premiums written for the composite reached $485 million in 2025, up from $394 million in 2020. On a direct premiums written basis, the composite grew by more than 18% from 2020 through 2025, after direct premiums written grew less than 1% from 2015 through 2019.
Underwriting Volatility Tied to Composite’s Small Size
Despite the broadly favorable operating results, underwriting ratios within the specialty LPL composite have been significantly more volatile than those of the commercial casualty composite. Post-policyholder dividend combined ratios ranged from 77.0 in 2017 to 108.8 in 2015 over the past decade, with 2025 coming in at 107.0, near the high end of that range.
AM Best attributed the elevated 2025 combined ratio largely to Attorneys’ Liability Assurance Society, which experienced substantially less favorable prior-year loss reserve development; the benefit from that development was insufficient to offset the company’s unprofitable accident-year 2025 results.
The report noted that the small number of companies in the composite — and the modest premium volume of most of them — makes aggregate ratios inherently more susceptible to year-over-year swings.
Policyholder dividends add another layer of complexity: several LPL insurers operate as mutual companies or risk retention groups and return dividends to policyholders, which can materially elevate reported combined ratios. Texas Lawyers’ Insurance Exchange, for example, carried a policyholder dividend ratio of 22.3% in 2025, pushing its combined ratio from 76.1 before dividends to 98.3 after.
Loss adjustment expense ratios also reflect the pressures bearing down on the segment. The specialty LPL composite’s LAE ratio was 17.5 in 2025, compared with 10.5 for the commercial casualty composite, a gap AM Best linked to both the claims-made nature of LPL coverage and the broader effects of social inflation. For smaller LPL insurers in the composite, loss adjustment expenses frequently exceed pure loss expenses, the report said.
Social Inflation, Nuclear Verdicts, and Litigation Financing Reshape the Risk Landscape
The rising cost of claims, more than their frequency, is reshaping the LPL market, according to AM Best’s report. According to third-party claims administrator Sedgwick data cited in the report, 2024 saw a 52% increase in jury awards exceeding $10 million and an 81.5% increase in awards exceeding $100 million. AM Best noted that settlement values have also climbed, meaning that avoiding trial has not insulated insurers from the effects of social inflation.
Third-party litigation financing, which became common in the U.S. around 2006 according to Harvard Law School’s Center on the Legal Profession, has since grown into a multibillion-dollar industry and has amplified these dynamics.
Private investors fund cases in exchange for a share of the award, contributing to a rise in what the industry now terms “thermonuclear verdicts,” jury awards exceeding $100 million. Numerous states have moved to restrict or require greater disclosure around these arrangements, though the practice continues to expand.
Alongside litigation trends, “Emerging liability risks that lawyers and law firms need to navigate concerning AI adoption, cybersecurity, and increased regulatory or legislative scrutiny supported the need for increased LPL insurance premiums,” said Dylan Catania, associate analyst at AM Best.
The market has responded with stricter underwriting, particularly among larger LPL carriers managing high-severity losses.
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