Earnings Quality Red Flags

The headline check: cash against profit

The single most useful starting test is operating cash flow divided by net profit. If it sits comfortably above 1, reported profit is being backed by real cash generation. If it is persistently below 1, or falling toward it, that deserves real attention.

Profit is an accounting construct shaped by judgement; cash is harder to manufacture. When the two diverge for long, the accounting is usually doing the work.

A falling ratio is not automatically a red flag

Take a worked series: the ratio falls every single year — 3.35, then 2.33, 2.12, 1.85, and 1.77. Five consecutive years of decline looks alarming on a chart.

Now look at the direction of travel properly. The ratio stays comfortably above 1 at every point. At 1.77, operating cash flow still nearly doubles net profit. What is happening is normalisation, not deterioration: the starting 3.35 was unusually high because net profit was still small relative to a relatively fixed depreciation add-back. As profit grew faster in percentage terms, the ratio fell toward a typical, healthy level.

A ratio falling toward 1 with a specific, benign explanation is a very different finding from a ratio falling through 1. That precision is what separates analysis from pattern-matching on a scary-looking chart.

Four more checks worth running every time

• 1.Does revenue growth have a named driver? Steady growth traceable to specific segments, pricing or volume is credible. One unexplained spike is not.
• 2.Is margin expansion explained by a traceable mechanism? You should be able to point to where in the waterfall it happened — operating leverage below the gross-profit line, for instance. The moment someone says “margins just got better” without saying where, stop trusting the number.
• 3.Are receivables or inventory growing disproportionately to revenue? Falling days measures are the opposite of a red flag. Rising ones, quarter after quarter, suggest revenue recognised before cash is collected, or weakening collection discipline.
• 4.Are one-off items flattering the result? This is where you read the notes to the accounts for exceptional items excluded from “underlying” or “adjusted” profit.

What each check looks like when it fails

It is worth knowing the failing version of each test, so you recognise it elsewhere:

• —A sudden one-quarter revenue spike with no segment, pricing or volume explanation.
• —Margin expansion with no identifiable mechanism anywhere in the waterfall.
• —Receivables growing noticeably faster than revenue, several quarters running.
• —Operating cash flow falling below net profit and staying there.

Risks are testable hypotheses, not abstractions

The useful way to connect a risk register to analysis is to ask: if this named risk actually happened, which number would move?

Customer or distributor concentration materialising shows up as a revenue shortfall with no segment explanation. Working-capital discipline failing shows up as receivable or inventory days rising instead of falling. Input-cost volatility shows up as gross margin falling where it had been flat. Each risk maps to a specific check against data you already have.

These checks are necessary, not sufficient

An honest limit: passing these tests is evidence in favour of trusting reported numbers, not proof beyond doubt. Real management has incentives, discretion within accounting rules, and information an outside analyst does not have.

Failing them should make you considerably more suspicious. Passing them should make you reasonably comfortable. Neither is a verdict.