Combined Ratio: the P&C Scoreboard

The Combined Ratio Is Underwriting-Only Profitability

Property-and-casualty analysts open with one number: the combined ratio. It adds the loss ratio (incurred losses and loss adjustment expenses divided by premiums) to the expense ratio (underwriting expenses divided by premiums). The result tells you whether the insurance operation itself made or lost money, before a dollar of investment income.

Below 100% means underwriting profit. Below 95% is our screen for strong underwriting. Investment income, float economics, and reserve releases are separate lenses; see our float guide and reserve development guide for those.

The Two Screens

Progressive discloses a company-specific guardrail: grow “as fast as possible” subject to a calendar-year combined ratio of 96% or better. That guardrail is PGR’s own policy.

FY2025 Comp Ladder vs Industry

Verified FY2025 companywide combined ratios against preliminary statutory industry compilations:

AM Best covers roughly 96% of industry net premiums written; Verisk covers roughly 97.8% of US P&C business. Both are preliminary FY2025 statutory tallies (released March 2026). Cat losses added an estimated 7.6 pts to the 2025 industry ratio versus 8.8 pts in 2024.

The four-name ladder spans 4.4 percentage points from Chubb at 85.7% to AIG GI at 90.1%. All four beat both industry prints by at least 2.1 pts.

Investment Income Sits Outside

The combined ratio deliberately excludes net investment income. A 92% combined ratio on $10bn of earned premiums implies $800m of underwriting profit. If the insurer also earns $500m of net investment income on its float-funded portfolio, total pre-tax operating earnings are $1.3bn. ROE blends both engines; the combined ratio scores only the first.

That separation matters when comparing a personal-auto compounder with a high fixed-income book yield to a commercial-lines writer with tighter underwriting but a lower portfolio yield. Rank underwriting on the combined ratio; rank the investment engine separately.

Worked Example: Loss + Expense to Underwriting Profit

Take a simplified P&C insurer with $20,000m of net earned premiums:

A 92.0% combined ratio sits between the verified comp set (85.7–90.1%) and the industry prints (92.2–92.9%). The 8% underwriting margin is the raw material for float economics: an underwriting profit means the insurer is paid to hold the float, break-even underwriting makes it free, and an underwriting loss makes it costly.

What the Scoreboard Misses

Favourable prior-year reserve development (PYD) lowers the calendar-year loss ratio without proving current-year pricing adequacy. AIG’s FY2025 favourable PYD of $548m shaved 2.1 pts off its General Insurance combined ratio. Read PYD through the reserve development lens.

Life insurers do not report a P&C-style combined ratio. MetLife and Prudential Financial run spread businesses; their economics sit in general-account spread and new-business metrics.

Reading the Ladder

The combined ratio is the P&C scoreboard because it is comparable across lines and filing regimes, updates every quarter, and separates underwriting discipline from investment returns. Chubb at 85.7% and Progressive at 87.4% set the FY2025 ceiling. AIG at 90.1% still clears industry by a comfortable margin. When a name drifts toward 95% or above, the question shifts from “how good is underwriting?” to “is investment income carrying the ROE?”