Combined Ratio
Combined ratio explained: the key measure of underwriting profitability. Below 100% means profit, above 100% signals a loss. Learn how to calculate it.
How It Works
The combined ratio formula is deceptively simple: loss ratio + expense ratio = combined ratio. The loss ratio captures claims costs as a percentage of earned premium. The expense ratio captures all operating costs — commissions, administrative overhead, acquisition costs, and regulatory fees — also as a percentage of earned premium. Together, they tell you exactly how much of every premium euro is consumed before any underwriting profit remains.
A combined ratio of 95% means the insurer spends EUR 95 for every EUR 100 of premium earned, leaving EUR 5 as underwriting profit. At exactly 100%, the operation breaks even on underwriting alone. Above 100%, the insurer loses money on every policy written — though investment income from the premium float may still produce an overall profit. This is why some large carriers can tolerate combined ratios slightly above 100% in certain years, but for brokers and MGAs without significant investment portfolios, underwriting profit is the only profit.
Breaking down the components reveals where to focus. The loss ratio is driven by claims frequency and severity — how often claims occur and how large they are. The expense ratio is driven by operational efficiency — how much it costs to acquire, underwrite, and service each policy. A broker or MGA with a 62% loss ratio and a 35% expense ratio produces a 97% combined ratio. The same loss ratio with a 28% expense ratio drops to 90% — a dramatically more attractive proposition for capacity providers.
For brokers and MGAs, the combined ratio determines carrier appetite, commission structures, and binding authority renewals. Carriers evaluate the combined ratio of the business a broker places with them. Consistently delivering portfolios below 95% combined ratio earns preferential terms: higher commissions, broader authority, and priority access to capacity during hard markets. Running above 100% triggers remediation plans, capacity restrictions, and eventual termination of agreements.
Practical Example
An MGA specializing in commercial lines reviews its annual underwriting performance. The loss ratio stands at 65%, reflecting a moderate claims year with one large property loss inflating the result. The expense ratio is 32%, comprising 20% acquisition costs (commissions to sub-brokers and marketing) and 12% administrative and operating expenses. The resulting combined ratio is 97% — a 3% underwriting profit margin. While profitable, the MGA recognizes the thin margin leaves no room for adverse claims development. Analyzing at product-line level reveals the issue: commercial property runs at 72% loss ratio due to the large loss, while liability sits at 54%. By implementing stricter property accumulation controls and adjusting excess-of-loss reinsurance, the MGA targets reducing the property loss ratio to 60% the following year. If achieved alongside holding the expense ratio steady, the blended combined ratio would improve to 90%, tripling the underwriting profit margin and strengthening the case for expanded capacity from carriers.
Key Metrics
| Metric | Benchmark | Impact |
|---|---|---|
| Target combined ratio | Commercial lines: 92-97% | Personal lines: 95-100% | Determines whether the underwriting operation generates profit or requires investment income to break even |
| Expense ratio benchmark | Brokers: 28-35% | Direct carriers: 20-27% | Higher acquisition costs in the broker channel require tighter loss ratio management to remain competitive |
| Breakeven threshold | 100% combined ratio | Above this point, every policy written destroys value unless offset by investment returns |
| Top-quartile performance | Below 90% combined ratio | Earns maximum commission tiers, expanded binding authority, and preferred capacity access |
FAQ
Q: What does a combined ratio above 100% mean?
A combined ratio above 100% means the insurer or MGA is paying out more in claims and operating expenses than it collects in premiums. For every EUR 100 earned, more than EUR 100 is spent. A combined ratio of 108%, for example, means the underwriting operation loses 8 cents on every premium euro. This does not necessarily mean the company is unprofitable overall — investment income from premium float can offset underwriting losses. However, sustained combined ratios above 100% are unsustainable and signal the need for corrective action: tightening underwriting criteria, re-pricing segments, or reducing acquisition costs. For brokers, a portfolio running above 100% combined ratio will trigger carrier scrutiny, reduced capacity, and potential non-renewal of binding authorities.
Q: How can brokers influence the combined ratio?
Brokers influence the combined ratio through both components. On the loss ratio side, they improve outcomes by selecting better risks, implementing loss prevention programs, managing claims proactively, and removing persistently unprofitable accounts from their book. On the expense ratio side, brokers contribute by driving efficient placement processes, reducing administrative overhead through automation, and achieving scale that lowers per-policy costs. The most effective lever is portfolio curation — systematically analyzing which segments, product lines, and client types generate profitable combined ratios and concentrating growth efforts there. Brokers who use data analytics to monitor combined ratio at a granular level consistently outperform those who manage by intuition alone.