Margem contribuição unit
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The Unit Contribution Margin Calculator determines how much each unit sold contributes to covering fixed costs and generating profit. It is calculated by subtracting unit variable costs from the selling price. This is crucial for product or service viability analyses.
The formula used is: Unit Contribution Margin = Selling Price per Unit − Variable Cost per Unit. For example, if a product sells for $50 and its variable cost is $30, the margin is $20. This value shows the portion of revenue not committed to direct costs.
This tool is useful for pricing decisions, product mix analysis, and break-even planning. It is commonly used by businesses to identify which items have the greatest impact on profitability. However, note that it does not account for total fixed costs, only the contribution per unit.
Key considerations: ensure variable costs are correctly separated and updated. Errors in this calculation can lead to flawed strategic decisions. Combine this metric with others, like profit margin, for a comprehensive view of financial health.
Frequently asked questions
How does the unit contribution margin calculator work?
It calculates the difference between the unit selling price and variable cost, showing how much each unit contributes to profit and fixed costs.
In which scenarios is this calculator useful?
It's ideal for evaluating individual product profitability, setting prices, or comparing the efficiency of different items in a product line.
How to interpret the result of the margin?
A positive value means the unit generates profit after variable costs. The higher the margin, the greater the contribution to fixed cost coverage.
Should I consider fixed costs when using this calculator?
No, this calculator focuses only on the relationship between price and variable costs. Fixed costs are analyzed separately in break-even calculations.
What if I don't know the unit variable cost?
Divide total variable costs by the number of units produced. Example: $3,000 variable costs for 100 units result in $30 per unit.