Insurance Reimbursement is the payment an insurance company makes to a policyholder or a designated third party to cover a financial loss that is specified under the terms of an insurance contract. Think of it as the moment of truth for an insurance policy. You pay your premiums faithfully, and when a covered event occurs—a car accident, a house fire, a medical procedure—the insurer reimburses you for the damages or costs. For the policyholder, this reimbursement is the core benefit they paid for. For the value investor studying an insurance business, this payout is a critical expense that reveals the true skill of the company. A well-run insurer isn’t just good at collecting premiums; it's exceptionally disciplined about the reimbursements it pays out.
For an ordinary person, an insurance reimbursement is a welcome check after a misfortune. For a savvy investor like Warren Buffett, it's one side of a beautiful business equation. The other, more magical side, is called the floats. Float is the money an insurer collects in premiums that it gets to hold and invest before it has to pay out any reimbursements (also known as claims). Essentially, policyholders are giving the insurance company a massive, interest-free loan. The best insurers take this a step further. They aim to achieve an underwriting profit, which means the premiums they collect are greater than the total reimbursements and operating expenses they pay out. When this happens, they are not just getting an interest-free loan; they are being paid to hold and invest other people's money. This is the holy grail of the insurance business and a key reason why Buffett's Berkshire Hathaway has been so successful, with subsidiaries like GEICO. The discipline in managing reimbursements directly creates this profitable float.
You don't need to be an insurance expert to gauge how well a company manages its payouts. The industry has a wonderfully simple metric that tells you almost everything you need to know.
The combined ratio is the single most important metric for evaluating an insurer's core profitability. It tells you whether the company is making money from its actual insurance operations, separate from its investment activities. The formula is: (Total Reimbursements + All Expenses) / Earned Premiums
The combined ratio is made up of two key parts:
Example: An insurer collects $1 billion in premiums. It pays out $650 million in reimbursements and has $250 million in operating expenses.
This is a stellar result! The company made a $100 million underwriting profit ($1b - $650m - $250m) and got to invest the $1 billion float.
When looking at an insurer, use this checklist to see if their reimbursement practices are building value.
Insurance reimbursement is far more than just a customer service function; it is the ultimate test of an insurer's intelligence and discipline. For the value investor, a company that consistently manages its reimbursements to produce an underwriting profit (a combined ratio under 100%) is a potential gem. It has mastered the art of getting paid to play with other people's money, turning the simple act of reimbursement into a powerful engine for long-term value creation.