Loss Ratio vs. Combined Ratio: What’s the Difference?

Loss Ratio vs. Combined Ratio: An Overview

The loss ratio and combined ratio are used to measure the profitability of an insurance company. The loss ratio measures the total incurred losses in relation to the total collected insurance premiums, while the combined ratio measures the incurred losses and expenses in relation to the total collected premiums.

Loss Ratio

The loss ratio is calculated by dividing the total incurred losses by the total collected insurance premiums. The lower the ratio, the more profitable the insurance company, and vice versa. If the loss ratio is above 1, or 100%, the insurance company is unprofitable and maybe in poor financial health because it is paying out more in claims than it is receiving in premiums. For example, say the incurred losses, or paid-out claims, of insurance company ABC are $5 million and the collected premiums are $3 million. The loss ratio is 1.67, or 167%; therefore, the company is in poor financial health and unprofitable because it is paying more in claims than it receives in revenues.

Enterprises that have a commercial property and liability policies are expected to maintain loss ratios above a certain level. Otherwise, they may face premium increases and cancellations from their insurer. For example, take a small dealer of used commercial equipment, who pays $20,000 in annual premiums to ensure their inventory. A hailstorm causes $25,000 in damages, for which the business owner submits a claim. The insured’s one-year loss ratio becomes $25,000 / $20,000, or 125%.

In order to ascertain what kind of premium increase is warranted, carriers may review claims history and loss ratios for the past five years. If the insured has a very brief tenure with the insurer, the company may decide that the commercial equipment dealer presents an unacceptable future risk. At that juncture, the carrier may choose not to renew the policy.

Combined Ratio

A combined ratio measures the money flowing out of an insurance company in the form of dividends, expenses, and losses. Losses indicate the insurer’s discipline in underwriting policies.

The combined ratio is usually expressed as a percentage. A ratio below 100% indicates that the company is making underwriting profit, while a ratio above 100% means that it is paying out more money in claims that it is receiving from premiums. Even if the combined ratio is above 100%, a company can potentially still be profitable because the ratio does not include investment income.

For example, suppose insurance company XYZ pays out $7 million in claims, has $5 million in expenses, and its total revenue from collected premiums is $60 million. The combined ratio of company XYZ is 0.20, or 20%. Therefore, the company is considered profitable and in good financial health.

Key Differences Between Loss Ratio and Combined Ratio

Some of the more notable differences between the two ratios are:

• Scope of Measurement – The loss ratio focuses solely on incurred claims compared to earned premiums, while the combined ratio provides a broader picture by incorporating both claims and operating expenses.
• Expense Consideration – The loss ratio ignores administrative and operational costs, while the combined ratio includes these expenses. This means an insurer could have a low loss ratio but still be unprofitable if operating costs are too high. The combined ratio accounts for this by factoring in underwriting and administrative expenses.
• Profitability Insight – The loss ratio alone cannot determine profitability since it only considers claims payouts. The combined ratio provides a clearer view of overall profitability.
• Use by Stakeholders – Insurance companies use the loss ratio primarily to assess their underwriting risk. Generally speaking, investors and regulators favor the combined ratio as it includes the full cost of running the business.
• Impact of Market Conditions – Loss ratios generally tend to fluctuate more with claim trends, such as natural disasters or economic downturns that increase insurance payouts.

Using Loss Ratio and Combined Ratio Together

Neither the loss ratio nor the combined ratio alone can provide a complete picture of an insurer’s financial health—each serves a distinct purpose. In practice, when used together, they typically provide a more holistic view.

By using both ratios together, insurers can pinpoint the root cause of financial performance issues. For example, if a company has a high combined ratio but a healthy loss ratio, the problem likely lies in operational inefficiencies rather than claim payouts. Otherwise, if the loss ratio is too high, it signals that the insurer may need to adjust pricing, tighten underwriting standards, or reassess risk exposure. Investors and regulators also benefit from this dual analysis, as it helps them differentiate between insurers that are unprofitable due to excessive claims and those suffering from poor cost management.

In general, neither ratio should be viewed in total isolation. The loss ratio is useful for evaluating underwriting risk, while the combined ratio provides a more complete measure of profitability. Together, they allow for a more accurate evaluation.

Example of Loss Ratio and Combined Ratio

Imagine an insurance company that specializes in homeowners’ insurance. For several years, it has maintained a loss ratio of 60%, meaning it pays out $0.60 in claims for every $1.00 in earned premiums. This is considered a strong underwriting performance. Due to aggressive expansion efforts, its expense ratio has climbed to 50%. This results in a combined ratio of 110%.

Now, suppose the situation changes the following year. The company successfully reduces its operating expenses, lowering its expense ratio to 25%. However, during that same period, a series of hurricanes and wildfires significantly increase the number of claims. This pushes the loss ratio up to 85%, which is much higher than the previous year. Despite the company improving its cost efficiency, the sharp rise in claims still results in a combined ratio of 110%. Now, instead of struggling due to high operating costs, the company is unprofitable because of underwriting losses.

This example shows how both ratios must be monitored together. In the first case, expenses were the issue, while in the second case, high claim payouts were the problem. Even though the company faced the same 110% combined ratio in both scenarios, the underlying causes were completely different.

The Bottom Line

The loss ratio and combined ratio are insurance metrics that measure profitability, but they focus on different aspects. The loss ratio tracks claims paid relative to premiums, while the combined ratio includes both claims and operating expenses. While the loss ratio helps assess underwriting performance, the combined ratio provides a more complete picture of an insurer’s financial health.