Accrual vs Cash Accounting: Why Profits Are Not Cash

Canonical data. The worked example uses Wexford Instruments, the Group IV statement company. Figures are USD millions and agree with that page exactly.

Understanding why is the first thing an investor needs from accounting, because almost every subsequent misreading of a set of financial statements traces back to treating those two numbers as though they measured the same thing.

Two bases, and why the harder one won

Cash accounting records a transaction when money moves. Money in is revenue; money out is cost. It is simple, it is nearly impossible to manipulate, and it is what a household bank statement does. Accrual accounting records a transaction when the economic event occurs — revenue when it is earned by delivering something, expenses when they are incurred in producing that revenue — regardless of when cash changes hands. Every listed company reports on an accrual basis, and it is worth being clear that this is not a compromise or a concession to complexity: accrual accounting is the more informative basis, and the requirement exists because cash accounting describes a business badly.

The reason is the matching principle. A business that pays for materials in one month, manufactures in the next, delivers in a third, and collects in a fourth has done one economic thing spread across four periods. Cash accounting reports that as a large loss followed by nothing followed by nothing followed by a large gain — four periods, none of which describes what happened. Accrual accounting puts the revenue and the costs of earning it in the same period, so the reported result corresponds to the activity. Consider the simplest possible case: a company buys goods for 60 in November, sells them for 100 in December on sixty-day terms, and collects in February. On a cash basis it lost 60 in November, made nothing in December, and made 100 in February. On an accrual basis it earned 40 in December — revenue of 100 matched against the 60 it cost — and nothing in the other two months. The second version is a description of the business. The first is a description of the bank account.

What accrual accounting costs, and the sentence worth remembering

Matching requires judgement, and judgement is where every difficulty in this pillar begins. To place revenue and costs in the right period, someone must decide when a sale is genuinely earned, how long an asset will last, how much of the receivables balance will never be collected, what warranty claims will cost, and whether a contract obligation has been satisfied. Each of these is an estimate about the future made by people with a view about how the results should look — which is not an accusation, because the estimate has to be made by someone and the alternative is a basis that describes nothing. It does mean that the reported profit figure contains judgement in a way the cash figure does not.

Hence the formulation worth carrying: profit is an opinion; cash is a fact. The phrase is often quoted as though it discredited profit. It does not. An informed opinion about what a period's activity was worth is more useful than a fact about what moved through a bank account — a fact which, on its own, cannot distinguish a company that is growing from one that has simply stopped paying its suppliers. The right conclusion is that the two numbers are complements, and that any analysis using one without the other is incomplete. Cash without profit misses the economics. Profit without cash misses whether the economics converted into anything.

The four reasons profit and cash differ

The gap between net income and the change in cash has four distinct sources, and conflating them is the most common error a reader makes with a set of accounts.

1. Non-cash charges. Depreciation, amortisation, impairments, and stock-based compensation all reduce profit without moving cash in the period. They are added back at the top of the cash-flow statement, and they always push cash flow above profit.

2. Working capital. Cash tied up in receivables and inventory, offset by cash effectively borrowed from suppliers through payables and from customers through deferred revenue. A growing company normally consumes cash here, because it must fund larger receivables and inventory before the growth pays for itself — which is why fast growth and tight cash frequently coexist in entirely healthy businesses.

3. Investing. Capital expenditure and acquisitions consume cash and do not appear in profit at all in the year they occur — they arrive later, spread across years, as depreciation. This is where a large cash outflow can sit completely invisibly in the income statement.

4. Financing. Dividends, buybacks, and debt repayment all consume cash and none of them is an expense. A company can be highly profitable, generate strong operating cash, and still see its cash balance fall because it chose to return capital or repay borrowings.

Only the first two live inside cash from operations. The third and fourth sit below it — which is exactly why "profit went up and cash went down" is not, by itself, a finding.

How to use the two numbers together

The practical technique is comparison over time rather than inspection of a single year. Track cash from operations against net income across several years: if operating cash consistently runs at or above profit, the accruals are converting; if profit persistently exceeds operating cash and the gap widens, the question worth asking is which accrual is growing and why. That is a question, not a conclusion — the answer is frequently rapid growth, a change in customer mix, or a business model shift, and only occasionally anything more concerning. Two supporting habits. Separate the four causes before interpreting any gap, since the story differs entirely depending on whether cash left through working capital, capital expenditure, or shareholder returns. And read the cash-flow statement first when the two numbers disagree, because it is the statement that explains the disagreement — the income statement cannot, by construction. The remaining articles in this pillar work through the individual judgements — when revenue is earned, how assets are consumed, what inventory costs — and each of them is a specific instance of the general trade this article describes: better information, purchased with judgement.