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Operating Margin

In short

Profit after all operating costs but before interest and taxes

After paying for the ingredients AND the rent, salaries, marketing, and everything else it takes to run the business day to day, what percentage of each sales dollar is left? A retailer selling $100 of goods and clearing $8 after all of that has an 8% operating margin — before interest and taxes are even considered.

Operating margin divides operating income (revenue minus cost of goods sold and operating expenses like salaries, rent, and marketing) by revenue, stopping before interest and taxes are subtracted. That cutoff isolates how efficiently the core business runs, independent of financing or tax domicile, making it more comparable across companies with different debt loads than net margin is. Because fixed costs don't scale one-for-one with revenue, operating margin often expands as a company grows — operating leverage — so a rising multi-year trend is more informative than any single quarter. Some companies report an 'adjusted' operating margin that strips out restructuring charges or impairments; it's worth checking which version a source is using before comparing across companies.

Formula

Operating Margin = Operating Income ÷ Revenue × 100

Thresholds

<5
Thin — struggling operationally
5-15
Average
15-25
Strong operations
>25
Excellent — wide moat likely

Related concepts

  • Gross Margin — If you sell a sandwich for $10 and the ingredients cost $3, your gross margin is 70% — the product itself is highly profitable before rent, salaries, or marketing even enter the picture. A supermarket reselling the same sandwich for $10 after paying $8 to stock it has a gross margin of just 20%.
  • Net Margin — Net margin is what's left after EVERY expense — cost of goods, rent, salaries, interest on debt, and taxes. If a company brings in $100 of revenue and keeps $12 after all of that, its net margin is 12%. It's the strictest profitability measure, sitting below gross and operating margin since it also absorbs financing costs and one-time items.
  • Return on Invested Capital (ROIC) — ROIC asks how much after-tax operating profit a company generates for every dollar of capital — debt and equity combined — invested in the business. A company earning $15 of NOPAT on $100 of invested capital has a 15% ROIC. Compare that to WACC, the blended cost of that debt and equity, to see whether the business is creating or destroying value.