Use real postage costs
Use the amount you expect to pay after the item is packed, including any cover or service upgrades.
Free UK seller tool
Estimate the money left after item costs, postage, packaging, selling fees, promoted listing fees, and other expenses.
This is not an official eBay calculator. It estimates UK business seller fees using the category you select, the published per-order fee, and the 0.35% regulatory operating fee. Always check your actual eBay transaction fees.
Enter the figures for one sale. Results update automatically, and blank fields are treated as zero.
How it works
The calculator adds the selling price and buyer postage to get total revenue. It applies the selected category's final value percentage, a £0.30 order fee for orders of £10 or less or £0.40 above £10, and the 0.35% regulatory operating fee.
Published tiered rates and selected reduced-order-fee exceptions are included. Promoted listing and entered selling costs are then added before profit, break-even price, and target price are estimated.
Fee data checked against eBay UK's business seller fee page, last updated 12 February 2026.
Practical tips
Use the amount you expect to pay after the item is packed, including any cover or service upgrades.
Mailers, tape, labels, inserts, and handling materials can reduce margin across many orders.
Try different promoted listing percentages to see how they may affect estimated profit.
Common questions
Add the money received from the sale, then subtract the item cost, postage, packaging, marketplace fees, promotion fees, and other sale-related costs.
Yes. Enter a promoted listing percentage and the calculator estimates that fee from total revenue. Use zero if the listing is not promoted.
No. The calculator follows the published UK business seller category, order, and regulatory fee structure, but account discounts, performance surcharges, international fees, taxes, listing conditions, and future fee changes can affect the real charge.
There is no single margin that suits every product. This tool marks 20% or more as a healthy estimate, but your target should reflect returns, overheads, time, stock risk, and business goals.