Free UK tool

Marketplace Fee Calculator UK

Rank UK platforms by expected take-home after fees, ads, VAT and returns — free, no account.

Updated August 2026 · Fee assumptions

This is the SEO landing for the free What Profit calculator. Enter selling price, product cost, postage, ads %, return rate and optional FBA fulfilment — then rank who leaves more money.

Worked example

Leave VAT on platform fees on if you are a typical UK business, enter price and cost, then sort by profit per sale.

Frequently asked questions

Is the marketplace fee calculator free?

Yes. No account required.

Which platforms does it include?

eBay (private and business), Amazon FBM and FBA, Etsy, Shopify + Stripe, Depop, TikTok Shop, Vinted private and Pro, and Meta checkout estimates.

Can I model promoted listings?

Yes — set ads % of sale, then stress-test a higher price with ads in the A/B tab.

More UK fee guides

Cross-check the platforms you sell on — then open the calculator with the same product.