What is Contribution Margin?
What each unit or dollar of sales actually contributes toward covering fixed costs and turning a profit.
Contribution Margin: definition
Contribution margin isolates the part of price that is not consumed by the costs that vary with volume - materials, shipping, payment processing, hourly labor. It is the engine of break-even and pricing analysis: only after total contribution margin exceeds fixed costs does the business make money.
Contribution margin
CM = Revenue − Variable Costs · CM Ratio = CM ÷ Revenue
Per-unit CM is price minus variable cost per unit. The CM ratio tells you what share of each incremental sales dollar drops toward fixed costs and profit.
How Fintra handles it
Because Fintra keeps revenue and cost of sales on one data model, it can tag which costs vary with volume and compute contribution margin by product, channel, or customer - not just a blended company number. Planning uses those margins as drivers, so a change in volume flows straight through to profit in the forecast.
- Contribution margin computed by segment from tagged variable costs
- CM feeds break-even and driver-based plans automatically
- Pricing changes model their margin impact before you commit
Worked example
Frequently asked questions
What is the difference between contribution margin and gross margin?
Gross margin subtracts all cost of goods sold (including fixed production costs); contribution margin subtracts only variable costs. Contribution margin is better for volume, pricing, and break-even decisions because it isolates the cost that actually moves with each sale.
Is a higher contribution margin always better?
Generally yes, because more of each sale covers fixed costs and profit. But a very high CM ratio paired with high fixed costs still requires volume to break even, and pricing that lifts margin can suppress demand. Read CM alongside fixed costs and volume.
How do you improve contribution margin?
Raise price, cut variable costs (better sourcing, lower processing or shipping), or shift mix toward higher-margin products. Fintra shows CM by product and customer so you can see where mix and pricing changes move the needle.
Can contribution margin be negative?
Yes - if variable costs exceed price, every sale loses money before fixed costs even enter. Negative CM is a red flag that pricing or unit costs must change immediately, since more volume only deepens losses.
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