Marketplace and payment fees, calculated from each operator's own published fee page — with the reading rules that other calculators skip.
Work out eBay's final value fee for any category, including the tiered rates, the per-order fee, and the sneaker exemption. Rates verified against eBay's own fee page.
Enter your cost, shipping and promoted-listing rate to see net profit, margin and ROI after eBay's final value fee — and solve for the price that hits a target margin.
Calculate PayPal's US commercial transaction fee by payment type and currency, including the international surcharge, and reverse it to find what to charge to net an exact amount.
Stripe's US pricing is a base rate plus surcharges that stack. Calculate the real fee, reverse it to net an exact amount, and see what splitting a payment costs you.
Walmart uses two different tier rules and its own table distinguishes them in words. This calculator applies the right one per category and shows what the common misreading costs.
Square charges a different card rate on each of its three plans, and its ACH fee is a percentage with a minimum and a cap rather than a fixed cent amount. This calculator uses the rate for the plan you are actually on.
Same item, same price, two fee structures — eBay adds a per-order fee that Walmart does not. Compare both on your item and find the exact price where the cheaper marketplace flips.
Compare the three published US card rates on one payment and on a month of payments. When your average ticket is small it is the fixed fee, not the percentage, that decides.
Because the published fee tables are not as simple as the calculators that copy them. eBay charges some categories on portions and others on the whole amount, using two sentence shapes that look alike. Walmart does the same thing in different words. PayPal has a payment type with no fixed fee sitting in a table where every other row has one. Stripe's surcharges add together rather than replace each other. Each of those is worth real money on a real order, and each is stated plainly on the operator's own page.
Two of the tools here compare marketplaces or processors against each other rather than adding a new fee table. They read exactly the same rate tables as the single-operator tools, so a number can never disagree between a calculator and a comparison that includes it.
Every tool here shows the rule it is applying, links to the page the numbers came from, and shows the date those numbers were last checked against it.