Reading an Insurer's Financial Statements
An insurer's balance sheet runs in reverse of a normal company's — it collects cash first and pays the expense later — which makes its reserves, not its reported profit, the number that actually matters.
Prerequisites: Accrual vs Cash Accounting
A retailer sells you a shirt, books the revenue, and is done. An insurer sells you a policy, books the premium today, and then owes an unknown amount at an unknown future date to an unknown number of the people it insured. It has been paid before it knows what the "cost of goods sold" will even be. That reversal — cash in now, real cost discovered years later — is why insurance accounting looks unlike almost any other industry's statements.
The inverted production cycle
A normal company: build the product, incur the cost, then sell it and collect cash. An insurer: collect the cash (the premium), then find out over the following months or years what the product actually cost (the claims). This is often called the "inverted production cycle," and it means an insurer's early reported profit is really just an educated guess about a cost that hasn't fully arrived yet.
The single most important line on an insurer's balance sheet is the loss reserve — the company's own estimate of what it will eventually pay on claims it has already been paid to cover. Reported profit is only as good as that estimate, and the estimate can be wrong for years before anyone finds out.
The key statement items
Premiums written vs. earned. A one-year policy sold today is "written" in full immediately, but "earned" evenly over the year as coverage is actually provided — an insurer that just wrote a pile of new business looks smaller on earned premium than its cash flow suggests.
Loss reserves. This is the balance-sheet liability for claims incurred but not yet paid, including claims that have happened but haven't even been reported yet (IBNR — incurred but not reported). Reserves are set by actuaries using historical claim-development patterns, not by a market price, which makes them a judgment call baked into every quarter's earnings.
The combined ratio. Losses paid plus expenses, divided by premiums earned. Below 100% means the underwriting business itself made money before investment income; above 100% means the insurer is relying on investment returns on its float just to break even.
Float. The pool of premium cash sitting between collection and eventual claim payment, which the insurer invests in the meantime. A large, cheaply-obtained float is a genuine economic asset even if the underwriting itself barely breaks even.
Worked example
An insurer writes $500 million of premium this year, all one-year auto policies sold evenly through the year, so $250 million is earned by year-end. It pays $150 million in claims during the year and its actuaries estimate another $120 million of reserves are needed for claims that happened this year but will be paid or reported later. Underwriting expenses are $60 million.
Combined ratio = ($150m paid + $120m reserve increase + $60m expenses) / $250m earned = $330m / $250m = 132%. The underwriting business lost 32 cents for every earned premium dollar. But the insurer is still holding roughly $250 million of unearned premium plus the $120 million reserve as float, invested and earning income — the statements can show an overall profit even with a bad combined ratio, purely from investment income on that float.
What this means in practice
Analysts watch reserve development over time — did last year's reserve estimate turn out too low, forcing this year's earnings to absorb the shortfall? A pattern of releasing reserves (finding you'd over-reserved) flatters current earnings but borrows credibility from the past; a pattern of strengthening reserves (finding you'd under-reserved) is a warning that management has been optimistic and future earnings may take more hits.
A profitable-looking quarter at an insurer can be manufactured by simply reserving too little for future claims — the shortfall doesn't show up until years later when claims actually come in higher than booked. Always check the reserve-development footnote before trusting a single year's reported net income.
Further reading
- Buffett, Berkshire Hathaway Shareholder Letters (on float)