Overview
AM Best kept its outlook for US commercial insurance lines at “stable,” pointing to operating ratios in the low-to-mid-80% range and roughly 10% returns on capital through the 2025.
The segment should stay profitable in aggregate and sturdy enough to handle whatever comes next. That resiliency hinges on a few lines doing a lot of heavy lifting. Beinsure analyzed new trends and highlighted the key points.
The Stable outlook reflects AM Best’s expectation that the US commercial lines segment will remain profitable in aggregate and will be resilient in the face of near- and longer-term challenges.
According to our data, the Stable outlook is also predicated on the fact that several sub-segments with Stable outlooks (particularly workers’ compensation and E&S insurance) have robust margins.
While the General Liability subsegment has a Negative outlook, this concern is somewhat mitigated by ongoing rate increases and investment returns in this long-tailed business.
Key Highlights
- AM Best maintains a Stable outlook for US commercial lines, anchored by operating ratios in the low-to-mid-80% range and returns on capital around 10% through Q3 2025.
- Workers’ comp, E&S, commercial property, surety, MPL, title and mortgage insurance generate the segment’s strongest margins and collectively account for more than 40% of premiums.
- General liability, commercial auto and D&O remain the weakest performers, holding Negative outlooks due to social inflation, adverse severity trends and long-tailed reserve pressure.
- Rate momentum continues into 2025, although at a slower pace. Property rates soften, workers’ comp trends down, while auto, GL and umbrella maintain meaningful increases.
- Investment income jumps to 4.6%, driven by higher yields on bond-heavy portfolios, providing crucial support for casualty lines facing inflation and litigation stress.
AM Best expects that the risk-adjusted capital of the majority of segment carriers will remain sound. The Stable outlook also considers the dynamics of the major underlying subsegments that comprise the overall commercial lines segment, Beinsure noted.
These Stable outlooks are offset by our continued Negative outlooks on major commercial casualty lines, including general liability, commercial auto, and directors & officers insurance.
These include AM Best’s Stable outlooks on the commercial property, workers’ compensation, surety, medical professional liability, and title and mortgage insurance lines of business, which in aggregate account for over 40% of segment premiums, as well as on the excess & surplus insurance lines marketplace.
Improved fixed income investment returns have been an important tailwind helping to alleviate pressures on long-tailed casualty lines of business that remain exposed to adverse reserve development and a challenging litigation environment. These considerations support a Stable outlook.
US commercial lines stay strong as workers’ comp
US commercial lines insurers turned in another solid stretch through the first three quarters of 2025, with composite combined ratios holding in the mid-90% range and operating ratios settling in the low-to-mid-80s.
Those numbers, helped by investment income on large reserve bases, delivered returns on capital near 10%. That’s a marked improvement compared with the prior three years, when volatility and reserve strain kept results from stabilising.
Under the surface, though, the picture shifts line by line. Workers’ comp insurance continues to carry the segment, sitting near a 90% combined ratio for five straight years thanks to steady favourable reserve development and low claims frequency.
AM Best outlook by commercial insurance line of business (2025–2026)
| Line of Business | AM Best Outlook | Performance Drivers | Key Pressures |
| Workers’ Compensation | Stable | ~90% combined ratio, low frequency, strong reserve releases | Regulatory rate caps; long-term rate declines |
| Excess & Surplus (E&S) | Stable | Strong pricing power, profitable growth | Competition increasing as capacity returns |
| Commercial Property | Stable | 88% combined ratio, more capacity, softer reinsurance | CAT volatility; inflation in rebuild costs |
| Surety | Stable | Strong margins and capital | Macro-economic uncertainty affecting construction |
| Medical Professional Liability | Stable | Improved underwriting discipline | Severity trends and litigation risk |
| Title & Mortgage Insurance | Stable | Strong capitalisation | Interest-rate-driven volume swings |
| General Liability | Negative | Moderate rate increases (~5%) | Social inflation; nuclear verdicts; reserve uncertainty |
| Commercial Auto | Negative | High-single-digit rate hikes | Driver shortages; repair inflation; verdict severity |
| Directors & Officers (D&O) | Negative | Some moderation in market conditions | Securities litigation; social inflation |
| Umbrella / Excess Casualty | Cautious/Softer | Pricing near 10% | Large verdicts piercing primary layers; reduced capacity |
Commercial property insurance also keeps trending in the right direction, finishing 2024 with an 88% combined ratio and proving far less exposed to catastrophe losses than homeowners carriers.
Capacity has been stronger, reinsurance pricing less punishing, and underwriting discipline generally intact.
General liability insurance is where the wheels wobble
It logged a combined ratio around 120% in 2024 after another round of adverse severity trends and prior-year deterioration. Social inflation pushed claim values higher across occurrence-based liability, excess and umbrella, Beinsure noted.
Add reserve additions tied to asbestos, environmental and other mass-tort liabilities – still present, though fading – and the line stays on AM Best’s Negative outlook list.
Commercial auto sits in the same bucket, its combined ratio stuck above 100% despite repeated rate hikes.
These pressures explain why AM Best keeps negative outlooks on commercial GL, commercial auto insurance and D&O. Longer-tailed casualty lines simply absorb more of the social inflation fallout, and the fixes move slower than the underlying claim patterns.
Commercial insurance financial & performance metrics
| Metric | Value | Commentary |
| Composite Combined Ratio | Mid-90% range | Strong underwriting results across the segment |
| Operating Ratio | Low-to-mid-80% | Boosted by investment income |
| Return on Capital | 10% | Significant improvement over prior three years |
| Workers’ Comp Combined Ratio | 90% | Five-year run of favourable development |
| Commercial Property Combined Ratio | 88% | Outperforms personal property; CAT-light results |
| General Liability Combined Ratio | 120% | Heavy severity and social inflation |
| Commercial Auto Combined Ratio | 100%+ | Persistent underperformance despite rate hikes |
| Net Investment Income | 4.6% | +8 percentage-point jump vs. prior year |
| Overall Rate Change | +5% | Slower but still positive pricing momentum |
| Property Rate Change | Declined | First drop since 2017 due to added capacity |
Even so, AM Best expects the commercial segment to hold its footing over the medium term.
Moderate pricing gains across most lines and steady growth in net premiums written should keep results strong enough for aggregate profitability.
Insurers know the variability won’t disappear, but the segment’s core earnings power still looks durable – maybe sturdier than it has in years.
Commercial insurance rates keep rising into 2025
Premium rates across major commercial lines kept rising into mid- and late-2025, though nowhere near the frenzy that defined late-2020 and early-2021.
According to Beinsure, the market still posts rate-on-rate gains strong enough to support underwriting results, but the intensity has eased as capacity improves and competition returns in pockets of the market.
Workers’ comp stands out as the outlier again. It’s the strongest performer in the segment and also the most heavily regulated, which means the line keeps absorbing small quarterly rate cuts.
Commercial insurance rate-change comparison
| Line of Business | Peak Hard-Market Rate Increases (2020–2021) | Average Rate Change (2023) | Rate Change (2025) | Trend Direction 2025 |
| Workers’ Compensation | Flat to -3% | -2% to -3% | -1% to -2% per quarter | Continuing decline |
| Commercial Property | +15% to +30% | +8% to +12% | First decrease since 2017 | Softening |
| General Liability | +8% to +15% | +5% to +7% | 5% | Moderating but firm |
| Commercial Auto | +10% to +12% | +8% to +10% | High-single-digit increases | Still rising |
| Umbrella / Excess Casualty | +20% to +40% | +12% to +15% | 10% | Easing but elevated |
| D&O | +30% to +40% | Flat to -5% | Modest declines | Softening |
| Cyber | +80% to +120% | +20% to +30% | Mild decreases | Competitive pressure |
| E&S (Across Lines) | +12% to +20% | +7% to +10% | Moderate increases, line-dependent | Stable/Firm |
| Composite Average | +10% to +15% | +5% to +6% | 5% | Stabilising |
Even with those decreases – roughly 1% to 2% per quarter – comp delivers healthy underwriting margins because payrolls climbed, total pricing stayed firm, and claims frequency fell below historical norms, Beinsure noted.
The line benefits from favourable reserve development year after year, something most casualty carriers wish they could replicate.
The CIAB’s latest report pegs overall commercial pricing up about 5% across the first two quarters of 2025, roughly in line with the past few reporting periods. That sits on top of years of positive rate movement since 2020.
- Commercial property finally bent the other way for the first time since 2017 as capacity loosened and the reinsurance market softened. Workers’ comp, as noted, drifted downward.
- Commercial auto – a chronic underperformer thanks to driver shortages, expensive repairs and messy loss trends – kept posting high-single-digit rate increases every quarter.
- General liability saw gentler shifts in the 5% range, which AM Best considers close enough to current loss-cost trends.
- Umbrella pricing still runs near 10%, though that’s a steep drop from the spikes earlier in the hard market. Financial lines, including D&O and cyber, eased a bit after their own overheated cycles.
Underwriting stays disciplined, but you can feel carriers loosening up in the most competitive spots: property, cyber, D&O. Those lines see more flexible terms, more willingness to sharpen pencils, and more appetite to grab market share.
Casualty remains a different story. Insurers stay wary around US auto liability and excess casualty, where social inflation and large verdicts still dictate behaviour.
High-limit layers on catastrophe-exposed property and US excess casualty also remain tight, often requiring multiple carriers to build out full towers.
The broader theme? Rate momentum continues, but the market is slowly normalising. Some lines soften, some keep grinding higher, and the balance between competition and caution shifts month to month. For now, that mix remains enough to keep underwriting performance steady and profitable.
Commercial rates cool as investment income lifts margins into 2025
The CIAB’s latest data shows commercial pricing still climbing into the first half of 2025 though the pace looks nothing like the hard-market spikes that started in 2020.
Rate momentum remains, but the edges are softening. Property rates even dipped for the first time since 2017 thanks to more capacity and a friendlier reinsurance market.
Workers’ comp continues its slow, steady downshift, with quarterly declines of about 1% to 2%. That’s a long-running pattern now.
- Commercial auto, usually the problem child of the segment, keeps posting high-single-digit quarterly increases because driver shortages, heavy loss severity and repair inflation haven’t let up.
- General liability sits in the middle – modest increases around 5%, which AM Best says roughly line up with current claims-cost trends.
- Umbrella still climbs around 10% but nowhere near the highs from earlier in the cycle. Financial lines, including D&O and cyber, have eased after years of overheating.
Underwriting stays disciplined, but you can feel carriers loosening the reins in hypercompetitive spaces like property, cyber and D&O.
Casualty remains another story entirely. Insurers stay cautious around US auto liability and excess casualty, where social inflation and nuclear verdicts still distort the risk curve.
High-limit catastrophe property and US excess casualty layers often require multiple insurers to complete towers because nobody wants to hold too much volatility on their own.
If pricing takes a breather, investment income picks up the slack. Commercial insurers rely heavily on interest income because their reserves sit in long-dated, investment-grade bonds held to maturity.
70% of portfolios are in fixed-income securities, another 10% in cash or short-term paper. That structure means realised losses rarely show up, but the flip side is that rising rates deliver a quick and meaningful boost.
And that’s exactly what happened. After the rate spikes of 2022-2023, yields finally filtered through to portfolio returns.
Net investment income for the commercial lines composite hit 4.6% in the first half of 2025. That improvement outpaced premium growth and padded pre-tax operating income, helping offset slowing rate gains and ongoing inflation pressures inside casualty books.
Aggressive litigation fuels nuclear verdicts
Large claims keep hitting US commercial insurers, and the drivers aren’t subtle. Social inflation, sharper plaintiff tactics, rising cyber threats, climate-linked disputes, geopolitical tension – it all feeds a claims environment that refuses to cool.
According to Beinsure analysts, the plaintiffs’ bar now treats high-severity litigation like a technical discipline, not a gamble, and the results ripple straight into casualty, auto and umbrella books.
Anchoring and reptilian strategies have become standard courtroom tools. Juries hear inflated numbers early, then get nudged toward emotional reactions that push awards far past historical norms.
Third-party litigation funding adds more fuel, bankrolling mass tort cases and stretching settlement timelines. Insurers have been lobbying hard for tort reform in states where these trends hit worst, but progress remains slow.
The fallout shows up in nuclear verdicts – awards so large they blow through primary limits and squeeze excess and umbrella layers.
- Product liability, intellectual property and motor vehicle cases see the heaviest concentration. Carriers have responded by cutting capacity and tightening limits.
- Umbrella pricing, already firm, gets another shove upward as underwriting teams try to avoid becoming the next cautionary tale.
- Commercial auto stays trapped in its own storm. Loss frequency and severity keep rising thanks to repair-cost inflation, too few experienced drivers on the road, more distracted driving and a steady march of verdict inflation. It’s one of the few lines where every headwind seems to arrive at once.
- Cyber insurance has moved from niche add-on to essential coverage in most commercial programs. Awareness is higher than ever, but so are breaches, ransomware incidents and the associated claim costs. Insurers treat cyber as a permanent hot spot, not a passing trend, and the pricing and underwriting discipline reflect that.
New liability exposures lurk at the edges of the market. Climate-related casualty suits, PFAS and other “forever chemical” litigation, and claims tied to mental-health harms from technology all sit on carrier watchlists.
Add a cultural shift that’s increasingly skeptical of corporations and insurers, and the risk of extreme verdicts keeps rising.
Nobody in the sector pretends the uncertainty is fading. AM Best continues tracking these developments closely, but for now the message is simple: the claims environment remains charged, and commercial casualty insurers face a landscape where yesterday’s outliers increasingly look like tomorrow’s baseline.
FAQ
Because the segment continues to show strong profitability, with operating ratios in the low-to-mid-80% range and improved investment returns. AM Best believes most carriers maintain solid risk-adjusted capital and can weather near- and long-term challenges.
Workers’ compensation, E&S, commercial property, surety, medical professional liability, and title and mortgage insurance all post robust margins and collectively make up more than 40% of premiums. Workers’ comp in particular continues to deliver a ~90% combined ratio.
They’re heavily exposed to social inflation, large verdicts, reserve uncertainty and long-tailed severity trends. Commercial auto also struggles with repair-cost inflation, driver shortages and rising frequency.
Yes, but the pace has cooled. Overall pricing climbed about 5% in early 2025. Property softened for the first time since 2017, workers’ comp edged down, while auto, GL and umbrella continued upward pressure.
Higher interest rates in 2022–2023 boosted yields on insurers’ bond-heavy portfolios. With roughly 70% of assets in investment-grade fixed income, net investment income hit 4.6% in early 2025, lifting operating margins.
Aggressive plaintiff tactics like anchoring, reptilian arguments, and litigation funding. These push severity far higher than historic norms and often blow through primary limits into excess and umbrella layers.
Climate-related liability suits, PFAS and other “forever chemicals,” tech-linked mental-health claims and escalating cyber loss patterns. These exposures could create new long-tailed reserve pressure and reshape casualty pricing in coming years.
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AUTHOR: Alan Murray — AM Best ’s Director – P&C / Life & Annuity, Ratings & Research
Edited by Nataly Kramer — Lead Editor at Beinsure Media
