Contribution Margin

Revenue left over after variable costs — the amount each sale contributes toward fixed costs and profit.

Part of the Profitability & Quality course · Lesson 5 of 19

Formula

Contribution Margin = Revenue − Variable Costs · CM Ratio = (Revenue − Variable Costs) ÷ Revenue

What it is

Contribution margin is revenue minus variable costs — the costs that rise and fall directly with each unit sold, such as materials and shipping. What remains 'contributes' first to covering the company's fixed costs and then to profit. It can be stated in total dollars, per unit, or as a percentage of revenue (the contribution-margin ratio).

Why it matters

Contribution margin shows how much each incremental sale adds to the bottom line once variable costs are paid, which is the engine behind operating leverage. It is also the basis for break-even analysis: dividing fixed costs by the contribution-margin ratio tells you the revenue needed to break even.

How it's calculated

Subtract total variable costs from revenue for the dollar figure, or subtract per-unit variable cost from selling price for the per-unit figure; divide by revenue (or price) to get the ratio.

How Quintarthai uses it

Contribution margin is an internal cost concept not broken out in public filings, but its effects show up in the gross-margin and operating-margin trends on a company's deep-analysis page — see the metrics available across the screener and company pages at /app/.

Cross-border note. Contribution margin is a managerial concept rather than a mandated reporting line, so neither US GAAP nor Canadian IFRS requires it; you typically estimate it from disclosed cost details, and the approach is the same on both sides of the border.

FAQ

How is contribution margin different from gross margin?

Gross margin subtracts cost of goods sold, which can include some fixed manufacturing costs. Contribution margin subtracts only variable costs, so it isolates how much each additional sale truly contributes once the costs that vary with volume are covered.

How do I use it for break-even?

Divide total fixed costs by the contribution-margin ratio to get the break-even revenue. For example, $1,000,000 of fixed costs at a 40% contribution-margin ratio means you need $2,500,000 in revenue to break even.

See Contribution Margin on a real company

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