Contribution Margin

The contribution margin divides revenue minus variable costs by revenue. A 60% contribution margin means each sales dollar leaves 60 cents to cover fixed costs and profit. It is useful for break-even analysis and understanding operating leverage.

Contribution Margin — key facts

What each sale contributes after variable costs.


Formula	(Revenue − variable costs) ÷ revenue
Unit	Percentage
What it answers	How much of each sales dollar covers fixed costs?
Benchmark	30-60% typical
Data required	Revenue, variable costs

The intuition

Unlike gross margin, which includes all manufacturing overhead, contribution margin focuses only on variable costs (materials, direct labor). Fixed costs (rent, management salaries) are not subtracted.

This is useful for understanding break-even points. If contribution margin is 50% and fixed costs are $1 million per year, the company needs $2 million in revenue to break even.

How to calculate it

(Revenue − Variable costs) ÷ Revenue.

Example: A company with $10 million revenue and $4 million variable costs has:

Contribution margin: ($10 million − $4 million) ÷ $10 million = 60%

When it works well

Break-even analysis. Fixed costs ÷ Contribution margin = Break-even revenue.

Pricing decisions. Products with higher contribution margin are more valuable.

Understanding operating leverage. A company with high contribution margin and low fixed costs has strong operating leverage.

When it breaks down

Fixed costs are not truly fixed. What looks fixed short-term can vary over longer periods.

It does not account for capital intensity. A capital-light business and capital-intensive one can have identical contribution margin but very different profitability.

Variable cost definitions vary. Some companies include overhead in variable costs; others do not.