Seller profit and offer calculator
See what you really make on a sale, your break-even price and which offers to accept.
Getting the tool ready...
How it works
Enter what an item cost you, the postage and packaging, your marketplace and advertising fees, and the price. It shows your profit, margin and return on cost, the lowest price that still makes the profit you want, and which offers reach it.
What you need
- What you paid, postage the carrier charges, packaging and any other costs
- Marketplace and advertising fees: a percentage (of the item price, or of item plus postage) and a fixed amount
- Item price, postage the buyer pays, the profit you want, and any offers to compare
What you get
- Profit before tax, margin and return on cost
- A line by line breakdown of every fee and cost
- The lowest price for your target profit
- Each offer, with what you would make and whether it meets your target
Example
The example (not any marketplace's real fees): item £40, buyer pays £3 postage, 12% fee on item and postage plus 30p, 2% advertising. Profit before tax: £17.68.
Good to know
No marketplace's fees are built in, because they change: enter your own rates from your marketplace's fee page, and save them as a preset.
Amounts are worked in whole pence. Each percentage is rounded to the nearest penny, half a penny up. Profit is before tax, VAT and any refunds or returns. The currency symbol is only a label: nothing is converted.
Your privacy
What you type is worked out in your browser and is not sent anywhere. There are no accounts, adverts or tracking scripts.