unpaid claim liabilities

Imagine you run a car insurer. A customer crashes today. You will not write the cheque today — first there is a claim, then an investigation, maybe a lawyer, maybe surgery bills that keep arriving for two years. The accident has already happened, the money is already owed, but it has not yet left your bank account. The total of all such money you owe but have not yet paid is your unpaid claim liability. It is, by far, the largest single number on a non-life insurer's balance sheet.

Precisely, the unpaid claim liability is the estimated amount an insurer still owes on accidents that have already occurred, as of a given valuation date. It has several pieces: claims reported and still open (with case reserves on them), claims that have happened but have not yet been reported (IBNR), the expectation that already-reported claims will cost more than first booked (IBNER), and the cost of investigating and settling all of these (loss adjustment expense). Because much of this money is owed for events that are over but not yet fully measured, the liability must be estimated, not simply counted. A toy example: if a book of business has had 1,000 accidents this year, has paid 4 million so far, expects another 3 million on open claims, and another 2 million on accidents not yet reported, the unpaid claim liability is about 5 million.

This matters because the reserve is the single biggest lever on a non-life insurer's reported profit and solvency. Set it too low and the company looks profitable and well-capitalised when it is not; set it too high and it looks weaker than it is and may overprice its products. A persistent misconception is that the reserve is a pile of cash sitting in a vault — it is not. It is an accounting estimate of a future obligation; the matching cash is invested in bonds and other assets, and the reserve number simply records how much of those assets is already spoken for.