E-commerce Profit Calculator
Worked example (the default inputs above): €29.99 price, €12 product cost, 15% fees (€4.50), €3.50 shipping → profit €9.99 per order (33.3% margin); at 100 orders a month that is €999 a month.
Key fact: Fees are the silent margin-killer in e-commerce: a 15% marketplace fee plus payment fees can take more per order than the product itself costs to make.
What this calculator does
This calculator shows what you actually keep from one online order after the four costs every seller pays: the product itself, marketplace and payment fees, and shipping plus packaging. It also scales the result to your monthly order volume.
How to use it
- Enter your selling price per order.
- Enter your product cost per order (making or buying it).
- Enter fees as a percentage of price (marketplace commission plus payment processing combined) and your shipping + packaging cost, then read profit per order instantly.
The formula
Profit per order = price − product cost − (price × fee %) − shipping. Margin = profit ÷ price. Example: €29.99 − €12 − (€29.99 × 15% = €4.50) − €3.50 = €9.99 per order; €9.99 ÷ €29.99 = 33.3% margin.
Worked example with real numbers
A seller in Poland lists a handmade lamp for €29.99. The lamp costs €12 to make, the marketplace and payment fees take 15% (€4.50), and shipping plus packaging cost €3.50. Profit per order is €29.99 − €12 − €4.50 − €3.50 = €9.99, a 33.3% margin. At 100 orders a month that is €999 — before fixed costs like rent, software and advertising, which come out of that €999. If fees rose to 20%, profit would fall to €8.49 per order, a 15% drop from a 5-point fee rise — which is why fee changes deserve a price review, not silent acceptance.
Reference table
Profit per order at different fee rates (€29.99 price, €12 cost, €3.50 shipping — illustrative figures):
| Fee rate | Fee amount | Profit per order | Margin |
|---|---|---|---|
| 5% | €1.50 | €12.99 | 43.3% |
| 10% | €3.00 | €11.49 | 38.3% |
| 15% | €4.50 | €9.99 | 33.3% |
| 20% | €6.00 | €8.49 | 28.3% |
Sources and disclaimer
Method: per-order profit arithmetic. Fees vary by marketplace and payment provider (Etsy, Amazon, Shopify, Stripe and PayPal all differ), and shipping varies by weight and destination — enter your own actual figures. Fixed monthly costs (rent, subscriptions, advertising) are NOT deducted here; subtract them from the monthly profit figure for a full picture. VAT treatment depends on your registration status — use price, cost and fees on the same VAT basis.
Estimate only — not tax or financial advice. This tool estimates only. It is not tax, legal or financial advice and does not determine your actual tax, loan or lender decision — check your national tax authority, bank or a qualified adviser for your situation. Always verify current figures with the official source or a qualified adviser before making decisions.
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