Glossary term
Combined Ratio
The combined ratio measures an insurer's underwriting profitability by comparing claims and expenses with earned premiums.
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What Is the Combined Ratio?
The combined ratio is an insurance profitability metric that compares claims and underwriting expenses with earned premiums. It is used most often for property and casualty insurers to show whether underwriting operations were profitable before investment income.
A combined ratio below 100% generally indicates an underwriting profit. A ratio above 100% generally indicates an underwriting loss, although the insurer may still be profitable overall if investment income or other income offsets the underwriting result.
Key Takeaways
- The combined ratio measures underwriting results, not total company profitability.
- It combines the loss ratio and expense ratio.
- A ratio below 100% usually means premiums exceeded claims and underwriting expenses.
- Investment income is not the main focus of the combined ratio.
The Formula
The combined ratio is commonly expressed as the sum of the loss ratio and expense ratio:
The loss ratio compares claims and loss adjustment expenses with earned premiums. The expense ratio compares underwriting expenses with premiums. Together, they show how much of each premium dollar is consumed by insurance losses and operating costs.
Result | General Interpretation |
|---|---|
Below 100% | Underwriting profit before investment income. |
At 100% | Underwriting break-even. |
Above 100% | Underwriting loss before investment income. |
Improving trend | Claims, pricing, or expenses may be moving in a better direction. |
What Analysts Watch
Analysts use the combined ratio to compare underwriting discipline across insurers and business lines. A company with a consistently low combined ratio may be pricing risk well, managing claims effectively, or controlling expenses.
One year can be distorted by catastrophes, reserve changes, inflation, litigation, or unusually favorable claims experience. The trend and the reasons behind the ratio usually matter more than a single number.
Important Boundaries
The combined ratio does not include investment income, taxes, financing costs, or all non-underwriting items. It also does not say whether premiums are fair to policyholders or whether claims service is strong.
The Bottom Line
The combined ratio is the core underwriting scoreboard for many insurers. It shows whether the insurance business itself is profitable before investment results enter the picture.