In business, margin measures how much profit a company keeps as a percentage of its revenue. The four main types — gross, operating, net, and contribution margin — each subtract a different set of costs, giving you a layered view of profitability from the top line down to the bottom line.
What Is Margin?
Margin expresses profit as a percentage of sales, making profitability comparable across companies of any size. A "10% margin" means the business keeps 10 cents of every revenue dollar at that level. Which costs you subtract determines which margin you're measuring.
The 4 Types of Margin
| Margin | Formula | Example ($1,000 revenue) |
|---|---|---|
| Gross | (Gross Profit ÷ Revenue) × 100 | $400 → 40% |
| Operating | (Operating Income ÷ Revenue) × 100 | $200 → 20% |
| Net | (Net Income ÷ Revenue) × 100 | $100 → 10% |
| Contribution | ((Revenue − Variable Costs) ÷ Revenue) × 100 | $400 → 40% |
How to Calculate Each Margin
Gross margin strips out only COGS — efficiency of production:
Gross Margin = (Gross Profit ÷ Revenue) × 100 = ($400 ÷ $1,000) × 100 = 40%
Operating margin also subtracts operating expenses — efficiency of running the business:
Operating Margin = (Operating Income ÷ Revenue) × 100 = ($200 ÷ $1,000) × 100 = 20%
Net margin subtracts everything, including tax and interest — overall profitability:
Net Margin = (Net Income ÷ Revenue) × 100 = ($100 ÷ $1,000) × 100 = 10%
Contribution margin subtracts only variable costs — how much each sale contributes to fixed costs:
Contribution Margin = ((Revenue − Variable Costs) ÷ Revenue) × 100 = (($1,000 − $600) ÷ $1,000) × 100 = 40%
Why Margins Matter
- Comparable: as percentages, margins compare profitability across companies and periods.
- Diagnostic: a healthy gross margin but thin net margin points to high operating or financing costs.
- Decision-guiding: contribution margin drives pricing and break-even analysis.
Margin FAQ
What is margin in business?
It's profit expressed as a percentage of revenue. Depending on which costs you subtract, you get gross, operating, net, or contribution margin — each a different lens on profitability.
How do you calculate margin?
Divide the relevant profit figure by revenue and multiply by 100. For net margin: (Net Income ÷ Revenue) × 100. $100 net income on $1,000 revenue = a 10% net margin.
What's the difference between gross and net margin?
Gross margin subtracts only COGS, measuring production efficiency. Net margin subtracts all costs — operating expenses, interest, and taxes — measuring overall profitability. Net margin is always lower.
What is a good profit margin?
It varies widely by industry. A net margin around 10% is often considered healthy, 20%+ strong, and under 5% thin — but software businesses run far higher gross margins than, say, retail or manufacturing.
