The US commercial insurance market is moving into a more stable phase after several years of volatility, but carriers and buyers are operating with a "slimmer margin of error" as economic, geopolitical and legal pressures continue to reshape risk, according to Lockton's March 2026 Market Update.
The report said strong 2025 earnings, disciplined underwriting and elevated investment income have strengthened carrier balance sheets and increased capacity across many lines. Beneath that relative calm, however, structural pressures are forcing insurers and insureds to be more precise in how they price, structure and transfer risk.
According to Lockton, US P&C insurers posted significantly improved underwriting results in 2025, helped by relatively benign catastrophe activity, prior rate increases and higher investment yields. That has allowed the market to move away from the sharp, across-the-board rate hikes seen earlier in the decade.
The firm characterized current conditions as “generally favorable for buyers, with some important exceptions.” However, it warned that key tailwinds are fading. Premium growth tied to inflation and exposure is moderating, reinvestment yields are flattening, competition is re-emerging in better-performing segments and catastrophe risk, particularly from severe convective storms, remains unpredictable.
“As premium momentum and investment income slow, performance will rely more heavily on underwriting precision, reserve discipline and capital allocation decisions,” the report said, adding that return on capital will depend increasingly on execution and strategic choices rather than market‑wide uplift.
M&A activity is also beginning to reaccelerate as stronger capital positions and more predictable reinsurance markets give carriers confidence to pursue scale and diversification, bringing additional integration and performance risks.
Property is one of the most buyer‑friendly areas in early 2026. A relatively quiet 2025 hurricane season, combined with softening property reinsurance pricing, has left capacity abundant and driven rate reductions for many well‑managed accounts. Insureds with robust valuations, risk engineering and catastrophe modeling are seeing the strongest competition.
Workers’ compensation remains highly profitable, with rates largely flat or gently decreasing in many jurisdictions. Lockton cautions that medical inflation and expanding presumptions are beginning to narrow margins and could pressure rate adequacy over the medium term.
Cyber pricing has broadly stabilized following several years of sharp increases. Capacity is available and competition has returned for organizations with strong controls and incident response capabilities, though underwriters remain vigilant around ransomware, privacy exposures and the impact of AI on both attack and defense.
Executive and professional lines are in various stages of transition. For public companies, D&O is broadly stable after successive years of softening, with most programs renewing flat amid ample capacity. Private company and nonprofit D&O is firming in more stressed sectors, with higher premiums and retentions despite continued capacity. Employment practices, crime and fiduciary markets remain competitive but are seeing closer scrutiny where class‑action risk or large wage‑and‑hour exposures are present.
Casualty remains the main outlier. While capacity is available, rising claim severity, social inflation and third‑party litigation funding continue to drive caution in general liability and excess casualty. Lockton expects ongoing pressure on limits, attachment points and pricing for long‑tail risks, even as the broader market stabilizes.
Lockton also pointed to a “healthy reinsurance marketplace” as another support for the primary sector. Property reinsurance continued to soften at the Jan. 1, 2026 renewals, with many loss‑free catastrophe programs achieving double‑digit risk‑adjusted rate cuts and improved ceding commissions. Casualty reinsurance capacity is steady but cautious, with reinsurers closely monitoring reserve adequacy and systemic liability trends. Cyber reinsurance remains robust, supported by new entrants and additional retrocession capacity.
US P&C policyholder surplus remains above $1 trillion, but Lockton emphasizes that capital is increasingly fragmented across traditional carriers, MGAs and the rapidly expanding excess and surplus market, as well as alternative vehicles such as insurance‑linked securities. That diversity gives buyers more options but also requires a better understanding of how quickly nontraditional capacity can withdraw if conditions change.
The report highlighted social inflation as a persistent concern, citing the normalization of “nuclear” verdicts, aggressive legal advertising and plaintiff‑friendly venues. While some states have enacted tort reforms, efforts have stalled in others, and litigation remains a key driver of casualty severity.
For carriers, the report said maintaining recent performance will depend less on market momentum and more on underwriting discipline, capital management and the ability to respond quickly as conditions shift.
