Loss Ratio

Loss Ratio is the ratio of claims and loss-adjustment expenses to earned premiums in a general insurance line of business, expressed as a percentage, and it is the core underwriting-profitability metric for motor, health, property, and commercial lines. It is closely related to the Incurred Claim Ratio but with a subtle difference — loss ratio typically includes loss-adjustment expenses (LAE) such as surveyor fees, investigation costs, and legal costs, while ICR as often published in India is narrower. A second related metric, the 'combined ratio', adds operating expenses (commissions, salaries, technology, marketing) to the loss ratio — a combined ratio below 100% means the line is underwriting-profitable before investment income; above 100% means the line relies on investment returns on policyholder float to be profitable.

Indian motor insurance, for structural reasons (regulated TP premiums, litigation-heavy third-party claims), has historically carried combined ratios comfortably above 100%, while retail health has been closer to 100% in aggregate. Worked example: a general insurer's motor OD portfolio in FY 2023-24 generated ₹2,200 crore of earned premium, paid out ₹1,500 crore in claims, set aside ₹200 crore in reserves for unsettled claims, and incurred ₹80 crore in loss-adjustment expenses. Its motor OD loss ratio is (1,500 + 200 + 80) / 2,200 = 80.

9%. If the same line incurred ₹440 crore of operating expenses (commissions, salaries, tech), the combined ratio is (1,780 + 440) / 2,200 = 101%, meaning the line lost ₹22 crore on pure underwriting and relied on investment income to break even. A common misconception is that low loss ratios always indicate a well-priced book.

They can also indicate a heavily underwritten book where the insurer has been declining or loading borderline risks, which shrinks market share over time and can mask pricing fragility when competitors lower prices. Another common misconception is that loss ratios can be compared directly across insurers with different business mixes. A motor-heavy insurer, a health-heavy insurer, and a commercial-property-heavy insurer will naturally have different 'normal' loss ratios because the underlying claim frequency and severity distributions differ.

Compare within the same line, across at least three years, and alongside the combined ratio to form a useful view. Related: incurred claim ratio, solvency ratio, persistency ratio.