Operating Margin
Learn how to calculate and interpret Operating Margin with its formula, a worked example, industry context and common mistakes.
Shows the percentage of revenue remaining after core operating expenses but before interest and taxes.
Formula
Operating Margin = Operating Income / Revenue x 100%
Worked example$1.8 billion of operating income on $10 billion of revenue produces an 18% operating margin.
Calculation steps
- Find operating income: $1.8 billion.
- Use revenue from the same period: $10 billion.
- Divide and multiply by 100 to get 18%.
How to interpret it
Stable or expanding operating margin often indicates operating leverage and cost discipline.
Industry context
Asset-light businesses generally have different margin potential from retailers, airlines, manufacturers, and banks.
Accounting and market variations
Definitions, reporting choices, periods, capital structures, and market conventions can change how this metric should be compared.
- Keep adjusted and reported operating income separate.
- Use matching periods.
- Check whether restructuring charges or stock compensation were excluded.