US P&C Insurance Industry Posts Best Underwriting Results in Over a Decade

The U.S. property and casualty insurance industry recorded its best underwriting performance in over a decade with a 96.5% net combined ratio in 2024, a significant improvement from 101.6% in 2023, according to an analysis by S&P Global Market Intelligence.
The 2024 results mark the strongest underwriting performance for the P&C industry since 2013, when the combined ratio was 96.2%. This improvement reflects a confluence of factors working in insurers’ favor after several challenging years, particularly in the personal lines segment. The P&C industry’s improved results come despite continuing challenges from natural catastrophes, including severe convective storms and major hurricanes, S&P noted.
Personal lines of business, which include private auto, homeowners, and farmowners insurance, showed remarkable recovery with a net combined ratio of 96.7% in 2024—approximately 10 percentage points better than the previous year, according to S&P. This dramatic turnaround in personal lines effectively pulled the entire industry into healthier territory, the analysis found.
Commercial lines, meanwhile, maintained relatively stable performance with a slight deterioration to a combined ratio of 96.3% in 2024 from 96.2% in 2023. Despite this minor slip, commercial lines continued to operate at profitable levels overall, though with significant variation across different segments, S&P reported.
Personal Lines Lead Recovery After Difficult Period
The homeowners insurance sector achieved its first annual underwriting profit since 2019, with this line posting a 99.7% net combined ratio in 2024—a substantial improvement from 110.9% in 2023. This recovery occurred even as carriers faced significant catastrophe losses from major weather events throughout the year, S&P noted.
Several factors contributed to this improvement, including higher premium rates implemented across most markets and substantial catastrophe losses being absorbed by non-U.S. domiciled reinsurers, according to the report. Additionally, many losses stemmed from flooding events, which are typically not covered by traditional homeowners policies.
Commercial Lines Show Mixed Performance Across Segments
While the overall commercial lines segment remained profitable, performance varied significantly across different business types, with liability lines showing concerning deterioration while property lines demonstrated notable improvement, S&P found.
Most liability categories faced challenging conditions in 2024. The “other liability” line, which represents approximately a quarter of all commercial lines direct premiums written and includes general liability, commercial excess and umbrella, errors and omissions, and cyber insurance, deteriorated significantly to a 110.1% net combined ratio—its worst performance since 2016.
Product liability similarly declined, with the net combined ratio rising to 107.9% in 2024, an 8.1 percentage point deterioration from the previous year. Commercial multi-peril liability fared even worse, with its combined ratio increasing to 114.9%, up from 110.1% in 2023. This line hasn’t posted a sub-100% combined ratio since 2015, indicating persistent profitability challenges, S&P reported.
Medical professional liability was the only liability line showing improvement, with its combined ratio falling to 103.0% from 109.8%, though it remains unprofitable.
Commercial auto posted modest improvement with a combined ratio of 107.2%, representing a 2.1 percentage point year-over-year gain. This enhancement was primarily driven by improvements in physical damage coverage, which achieved an 88.6% combined ratio. Commercial auto liability showed minimal change at 113.0%, the report noted.
The bright spots in commercial lines came from property coverages, with all three major commercial property lines reporting substantial improvements in profitability in 2024. The fire business line saw a 9.0 percentage point decrease to 77.2%, while commercial multi-peril non-liability improved by 13.8 percentage points to 91.6%. Allied lines posted a 93.2% combined ratio.
Workers’ compensation continued its run as one of the industry’s most consistently profitable lines, with a net combined ratio of 88.8% in 2024, virtually unchanged from 88.1% in 2023, S&P reported.
View the full analysis here. &