ClarityHow to use this tool
- Enter revenue, variable costs.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
Input reference and sample values
Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.
| Input | Format and units | Sample |
|---|---|---|
| Revenue | Numeric value. Must be greater than zero. | 10000 |
| Variable costs | Numeric value. Zero or positive. | 6000 |
Result for these sample inputs
4000 currency units
- Contribution margin ratio (%)
- 40
Contribution available to cover fixed costs and then profit.
Select Try the example in the form to load these values and calculate them again. This replaces the current form inputs. Compare the result with the method and worked explanation below.
The method, explained
Contribution margin = revenue − variable costs. Contribution margin ratio = contribution margin ÷ revenue × 100.
Revenue of 10,000 minus variable costs of 6,000 leaves contribution of 4,000, or 40% of revenue.
What to keep in mind
Only variable costs belong in this subtraction. Fixed costs still need coverage; contribution is not net profit.
Common questions
Can contribution be negative?
Yes. That occurs when variable costs exceed revenue under the supplied assumptions.
How does it connect to break-even?
Fixed costs divided by contribution per unit gives the unit break-even threshold when assumptions remain constant.
Methodology maintained by ClarityKit. How these tools are built and checked.