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E-commerce margin calculator
What is left on an order after fees, shipping, refunds and ads — and the CPA, ROAS and click price you cannot go past. Nothing you type leaves this page.
What one order is worth
Profit per order
$5.77 left on every order placed, 12.27% of what you keep.
Arithmetic on the figures above.
Break-even CPA
You can pay up to $26.22 to win an order before it stops paying for itself.
Contribution is what is left once every cost except advertising is paid.
Maximum CPC
At this conversion rate, a click is worth at most $0.58.
Break-even CPA multiplied by the conversion rate.
Conversion needed
At this click price you need 1.72% of visitors to buy, just to break even.
Click price divided by break-even CPA.
Per order placed
| Line | Amount |
|---|---|
| Revenue kept after refunds | $47.04 |
| Cost of goods | -$13.44 |
| Shipping and packaging | -$5.30 |
| Payment fee | -$1.72 |
| Cost of refunded orders | -$0.36 |
| Contribution before advertising | $26.22 |
| Advertising | -$20.45 |
| Profit per order | $5.77 |
Margins and returns
| Measure | Value | Meaning |
|---|---|---|
| Gross margin | 71.43% | Net revenue less cost of goods. |
| Contribution margin | 55.74% | After fees, fulfilment and refunds. |
| Net margin | 12.27% | After advertising. |
| ROAS now | 2.30× | Revenue kept divided by ad spend. |
| Break-even ROAS | 1.79× | Below this, each order costs you money. |
Sources
Computed from the figures you entered. Nothing here came from an outside source.
Checked .
How this was calculated
Everything is worked out per order placed and averaged over refunds, because you pay to acquire an order before you know whether it will come back.
Tax you collect is not revenue. With tax included in the price, net revenue is the price divided by one plus the rate; with tax added at checkout, the price is already net. Costs you enter are treated as net of any tax you reclaim.
Payment and marketplace fees are charged on the gross amount, which is what the customer actually paid, and are assumed not to be returned when an order is refunded. Shipping and packaging are spent on every order placed, including the ones that come back. A refunded order is counted at the cost you entered for it rather than at cost of goods, so if returned stock cannot be resold, put its unit cost in that figure.
Break-even CPA is simply the contribution: spend exactly that to win an order and you finish at zero. Maximum CPC is that figure multiplied by your conversion rate. Nothing is estimated — every number is arithmetic on what you entered, and anything that cannot be worked out is reported as unavailable rather than filled in.
What this does not tell you
This is one order at one price. It does not model volume discounts, a product mix, stock that does not sell, chargebacks, currency movement, or any cost that does not vary per order — rent, staff, software and your own time all sit outside it.
Break-even CPA assumes every order is won by advertising. If some come from search, email or repeat purchase, your real ceiling is higher. It also counts a customer once: with genuine repeat purchase you can pay more to acquire one than a single order justifies.
Amounts are in USD. There is no currency conversion here, so enter everything in one currency.