Contribution Margin Calculator
Calculate contribution margin, per-unit profit, and contribution ratio.
Contribution margin details
This calculator auto-updates when values change.
This calculator is for general business information only and is not financial, tax, accounting, or legal advice.
Results
Results update automatically.
Total contribution margin
£20,000.00
Each unit contributes £20.00 after variable costs, giving a contribution margin ratio of 40.0%.
Visual breakdown
About This Contribution Margin Calculator
This Contribution Margin Calculator shows how much revenue remains after variable costs.
It helps you understand how each sale contributes toward fixed costs and profit.
How to Use This Calculator
- 1
Enter your figures
Add the relevant revenue, cost, customer, or pricing values.
- 2
Review the automatic results
The calculator updates immediately using the example values and any changes you make.
- 3
Compare the breakdown
Use the result cards and visual breakdown to understand the main drivers.
- 4
Adjust assumptions
Change inputs to test scenarios and targets.
Frequently Asked Questions
Does this calculator use live business data?v
No. It uses the values you enter and calculates results instantly in your browser.
Can I use this for forecasting?v
Yes, for quick scenario planning, but forecasts should be checked against real accounting data.
Does this include tax?v
No. It does not automatically include tax unless you enter tax or related costs as part of the inputs.
Is this financial advice?v
No. It is a general information tool for planning and estimation.