eBay Profit Calculator

Fees form a material share of each eBay sale, and they are charged on the total the buyer pays rather than the item price alone. This calculator takes the sale price, item cost, shipping charged and actual postage, applies the fee percentages and fixed per-order charge from your own account, and returns the profit left over.

How to use it

The seven inputs come from a listing and a fee breakdown. Sale price, shipping charged, item cost and actual postage come from the sale itself; the final value fee percentage, the payment processing percentage and the fixed per-order charge come from your fee invoice. Rates differ by category, by marketplace and by account, and marketplaces revise them, so the figures loaded here are illustrative rather than a current rate card.

How the math works

Revenue is the sale price plus the shipping charged. The final value fee is that revenue times the category percentage. The processing fee is the same revenue times the processing percentage, plus the fixed per-order charge. Profit is revenue minus item cost, minus actual postage, minus total fees. The margin shown is profit divided by sale price alone; measured against revenue including shipping it would read lower, so the label states which basis is used.

A worked example

With the loaded figures — a 50 sale, 30 item cost, 8 charged for shipping against 5 of actual postage, a 13% final value fee, 2.9% processing and a 0.30 fixed charge — revenue is 58. The final value fee is 7.54 and processing is 1.98, giving 9.52 in total fees. Profit is 13.48, a margin of 26.96% on the sale price, with a 3.00 surplus on shipping. Measured against the full 58 of revenue the same profit is a 23.24% margin, which is why the basis matters when comparing figures.

What moves the number most

The result responds to Sale Price, Item Cost, Shipping Charged, Shipping Actual Cost, Final Value Fee %, Payment Processing % and the Fixed Fee per Order. Sale price moves it most, since it drives both revenue and the two percentage fees. Item cost moves it one-for-one. The shipping pair matters in two directions at once: raising what you charge lifts revenue but also the fee base, so the gain is less than the headline increase.

Where fee totals get underestimated

Fee totals are commonly underestimated when only the headline percentage is considered. The fixed per-order charge and the fee applied to shipping both sit outside that percentage, and together they take a larger share of small sales than of large ones. The tool can be run before listing to work back from a target margin to the price that produces it.

Category and marketplace differences

Final value fees vary by category, and the fixed per-order charge and processing arrangement vary by marketplace. Some marketplaces fold processing into a single final value fee and levy a different fixed charge per order, in which case the processing percentage field is set to 0 and the whole percentage entered as the final value fee. Because all three fee parameters are inputs, either structure can be modelled.

What this doesn't capture

Listing and insertion fees, promoted listing charges, return postage, restocking losses, packaging materials, shop subscriptions and taxes all sit outside this calculation. So do tiered rates that differ from the percentages entered. The figure here covers the per-sale fee structure and the direct costs of the item and its postage.