Operating Margin

Understanding operating margin

Operating margin shows what percentage of revenue remains after covering cost of goods sold and operating expenses, but before interest and taxes. It is a core measure of operational efficiency and pricing power at the business level.

Compare operating margin with bottom-line profitability using the net profit margin calculator. When evaluating whether fixed costs are covered at planned sales levels, combine margin analysis with the break-even calculator to connect unit economics with overall operating leverage. For EBIT-based return on sales (ROS), use the return on sales calculator.

Operating margin formula

Operating income equals revenue minus cost of goods sold and operating expenses. It excludes interest, taxes, and non-operating items. You can enter operating income directly or derive it from revenue, COGS, and operating expenses.

Worked example

A company with $10,000,000 of revenue and $2,500,000 of operating income has an operating margin of 25%. Operating costs consume the remaining $7,500,000, or 75% of revenue. For every $1 of sales, $0.25 remains at the operating level before financing and tax effects.

Operating margin vs net profit margin

Operating margin isolates core business performance. Net profit margin includes interest, taxes, and one-time items below the operating line. A company can show a healthy operating margin but a lower net margin when debt costs or tax rates are high.

Frequently asked questions