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E-Commerce Finance

Contribution Margin Calculator

Calculate contribution margin per order and break-even volume from price, variable costs and fixed costs: what each sale adds toward fixed costs and profit.

Example numbers, replace with yours

€

What the customer pays per order

€

COGS + shipping + transaction fees + pick/pack

€

Optional, rent, salaries, software, subscriptions

Contribution margin
€35.00
Per order, before fixed costs
CM ratio
43.8%
Margin ÷ price
Break-even orders
343
Per month to cover fixed costs
Break-even revenue
€27,429
Per month
Each order contributes €35.00 (43.8%) toward fixed costs and profit. You need 343 orders a month (€27,429) just to break even; every order after that is profit.
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