Commercial Auto Insurance Losses Decline Sharply
The U.S. commercial auto sector shows significant improvement in underwriting results for 2025.
Updated on Oct. 29, 2026 in Insurance
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The U.S. commercial auto insurance market narrowed its underwriting losses to $2.2 billion in 2025, marking a 55% improvement over the previous year. This shift reflects a challenging decade where this line consistently underperformed compared to other property and casualty sectors.
Why it matters
Commercial auto insurance has historically been the worst-performing commercial property and casualty line, making this recent loss reduction a vital shift for industry stability. Despite these gains, rising repair costs and ongoing liability pressures suggest that premium costs for policyholders will continue to trend upward.
The commercial auto segment recorded a $4.6 billion liability underwriting loss in 2025, offset by a $2.4 billion gain in the physical damage sector. For the first half of 2026, the industry reported a direct loss ratio of 66.1.
The players
AM Best
A global credit rating agency specializing in the insurance industry that provides data and analysis for market participants.
Progressive Insurance Group
The largest commercial auto insurance carrier in the United States ranked by direct premiums written.
Travelers Group
The second-largest commercial auto insurance carrier operating within the United States market.
The details
Industry gains in 2025 were driven by a split performance where physical damage profits helped mitigate massive liability losses. Insurers attribute the reduction in accident frequency to widespread adoption of fleet monitoring and proactive maintenance programs by commercial policyholders.
Timeline
2025: The commercial auto insurance segment recorded a $2.2 billion underwriting loss.
First half 2026: The commercial auto line reached a direct loss ratio of 66.1.
October 29, 2026: AM Best published the market segment report.
Market Dynamics
This performance update reflects a departure from the persistent negative underwriting cycle that has historically plagued the commercial auto sector. Analysts are watching to see if these gains signal a sustained shift in profitability versus a temporary period of market volatility.
Policyholders should anticipate continued year-over-year pricing increases as carriers balance underwriting gains with persistent repair cost inflation. These findings serve as an indicator for stakeholders tracking insurance stock performance and commercial risk management costs.
The takeaway
While the insurance industry is seeing fewer accidents due to improved fleet monitoring, the high cost of modern vehicle repairs continues to pressure bottom lines. Business owners should maintain rigorous safety standards to potentially mitigate the impact of rising insurance premiums.
Further reading
For more on industry trends, explore our Insurance section.
More information
Review the full findings in the AM Best market segment report.
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