Combined Ratio
The sum of loss ratio and expense ratio, indicating overall underwriting profitability. Below 100% means underwriting profit.
What It Is
The combined ratio is the primary measure of an insurance carrier's underwriting profitability, calculated by adding the loss ratio and the expense ratio. A combined ratio below 100% indicates that the carrier is collecting more in premium than it pays out in losses and expenses, generating an underwriting profit. A combined ratio above 100% means the carrier is paying out more than it collects, resulting in an underwriting loss.
For example, if a carrier has a 62% loss ratio and a 32% expense ratio, its combined ratio is 94%, meaning it earns six cents of underwriting profit on every premium dollar. The expense ratio includes commissions paid to agents and brokers, salaries, overhead, and other operating costs. Carriers can still be profitable overall with a combined ratio above 100% if investment income from the float (premium collected but not yet paid out in claims) offsets the underwriting loss.
Industry-wide combined ratios for US P&C insurance have averaged 98-102% over the past decade, meaning the industry operates near break-even on underwriting alone. Combined ratios vary significantly by line: workers compensation might run at 90%, while commercial auto has frequently exceeded 110%. Market cycles of hard and soft markets are largely driven by the industry's aggregate combined ratio.
Why It Matters for Brokers
Brokers benefit from understanding combined ratios because they explain carrier behavior. When a carrier's combined ratio for a specific line deteriorates, that carrier will tighten guidelines, increase rates, and non-renew unprofitable accounts. Brokers who track carrier combined ratios by line can anticipate market shifts and proactively manage client expectations about upcoming renewals.
Real-World Example
A broker notices that their primary commercial auto carrier reported a 115% combined ratio for commercial auto in its annual statement, with a 78% loss ratio and 37% expense ratio. The broker anticipates rate increases and tightened appetite and proactively begins marketing their largest auto accounts to alternative carriers three months before renewal. When the primary carrier announces 15-25% rate increases across the book, the broker already has competitive alternatives ready for clients.
Common Mistakes
- 1Assuming a combined ratio above 100% means the carrier is unprofitable overall, when investment income can offset underwriting losses.
- 2Not distinguishing between calendar-year and accident-year combined ratios, which can tell very different stories about a carrier's performance.
How brokerageaudit.com Handles This
brokerageaudit.com tracks publicly reported combined ratios for major carriers by line of business, enabling brokers to assess carrier financial health and predict market behavior. The system alerts brokers when a carrier's combined ratio in a specific line deteriorates significantly, suggesting proactive remarketing for affected accounts.