Accounting red flags worth knowing

8 minute read. Updated 28 July 2026.

Almost every item below has a boring explanation most of the time. Receivables grow because sales grew. Margins move because input costs moved. The point of knowing these patterns is not to find fraud, which is rare. It is to know which questions to ask, because the same signals that occasionally precede a disaster routinely precede nothing at all.

What makes a pattern worth attention is persistence and the absence of an explanation. One odd year is a year. Three, with no account of why in the filing, is a question.

What to take away

Profit rising while cash flow does not is the single most useful warning sign, because it is hard to sustain and easy to check.
Look for changes in accounting policy, definitions or segment reporting. Redefining the measure is how a trend gets broken quietly.
None of these is proof of anything. They are prompts to read the footnotes.

Profit and cash pulling apart

If net income climbs for several years while operating cash flow stays flat, the company is recognising revenue it is not collecting, or capitalising costs that used to be expensed, or both. It is the most reliable signal on this list because it is measurable, it needs no interpretation, and it cannot continue indefinitely.

The innocent version exists: a business growing fast genuinely ties up cash in receivables and inventory. The distinction is whether cash flow eventually catches up.

Receivables growing faster than revenue

Receivables are sales made but not yet collected. When they grow materially faster than revenue for more than a year or two, the company is either selling to customers who pay more slowly or being more generous about terms to close sales.

Neither is fraud. Both mean reported revenue is a weaker predictor of future cash than it was.

Inventory growing faster than sales

Rising inventory ahead of demand is either a bet on future sales or a sign that current ones are disappointing. It matters because inventory is carried at cost until it is sold or written down, so a build-up defers a loss rather than avoiding it.

Adjusted figures drifting from reported ones

Companies present adjusted earnings to strip out things they consider unrepresentative, and often they are right. The signal is the gap widening over time, and particularly a company that adjusts out the same category of cost every year.

A restructuring charge every year for five years is not a restructuring charge, it is a cost of doing business that has been relabelled.

Changes to the measure rather than the result

Watch for a company changing how it defines a key metric, altering its segment reporting, or shifting its fiscal calendar. Each breaks comparability with prior periods, and each occasionally happens right before a trend would have become obvious.

The footnotes disclose these, usually briefly, and the disclosure is easy to skip past because it reads as administrative.

Auditor and management turnover

A change of auditor, particularly an unexplained one or one that comes with a disagreement disclosed in the filing, is worth understanding. So is a chief financial officer leaving abruptly.

Both are usually ordinary. Both are also, on the rare occasions something is genuinely wrong, among the earliest visible signs.

Statements that do not foot

Occasionally a filing's own figures do not add up as presented. Most often this is a legitimate consequence of unusual equity structures, which is why it clusters at real estate trusts and utilities, and sometimes it is rounding.

It is still worth noticing rather than assuming a transcription error. Materiality reports when a statement fails one of the accounting identities as displayed rather than inventing a reconciling row to make the column add up.

Terms used here

Free cash flow Operating margin Stock-based compensation