Marketplace fee and profit calculators

Index seller notes

Marketplace profit depends on category fees, payment processing, promoted listing costs, return rates, shipping choices, taxes collected from buyers, and the real item cost. A profitable-looking sale can become weak after one missed input.

Use this calculator before listing, before accepting offers, and when comparing platforms. Adjust the default fee assumptions to match your seller account and category.

How to use this page well

Use this page as a planning aid, not a final quote or official rule. Replace defaults with your own numbers, compare more than one scenario, and check any important fee, tax, carrier, or marketplace policy against the official source before acting.

• Use real costs instead of rounded guesses whenever possible.
• Review the result together with shipping, returns, discounts, taxes, and payment fees.
• Save or repeat the calculation when costs change, because small inputs can change profit quickly.