What is operating margin?
Operating income (EBIT) divided by revenue. Captures profitability after both cost of goods sold and operating expenses (R&D, SG&A) but before interest and taxes. The cleanest measure of operational efficiency at scale.
Operating margin = Operating Income / Revenue. Distinct from gross margin (which only subtracts COGS) by also subtracting R&D, SG&A, and other operating costs. Distinct from net margin (which also subtracts interest and taxes). Industry benchmarks: software 25-40%, consumer staples 15-25%, manufacturing 8-15%, retail 3-8%. Within an industry, operating margin trend signals scale economics: expanding margin means the company is leveraging fixed costs as revenue grows; contracting margin signals diseconomies or competitive pressure.
Operating margin vs gross margin
Gross margin captures pricing power (the spread between selling price and direct cost). Operating margin captures pricing power PLUS operational discipline (R&D efficiency, SG&A management, scale economics). A company can have a strong gross margin but weak operating margin if R&D or SG&A is bloated. Both metrics matter; the gap between them is informative.
The 2023 Meta efficiency push (the "year of efficiency") was a textbook example: gross margin stayed stable but operating margin expanded sharply as headcount and other operating costs were cut. Operating margin captures the kind of management discipline that gross margin alone misses.
Where invest-like uses it
Operating margin appears inside the Buffett-Fit management pillar (margin trend signals operational discipline) and the Smith framework (Smith requires operating margin trend stable or expanding).
Frequently asked questions
What is operating margin?
Operating income divided by revenue. Captures profitability after COGS and operating expenses but before interest and taxes.
Why is it different from gross margin?
Gross margin only subtracts direct production costs (COGS). Operating margin also subtracts R&D, SG&A, and other operating expenses, giving a fuller picture of operational efficiency.
What's a good operating margin?
Industry-dependent. Software 25-40%, consumer staples 15-25%, manufacturing 8-15%, retail 3-8%. Trend matters more than absolute level.
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