Why is commission charged on shipping too?

Most marketplace transaction fees use the buyer's total payment as the base, and postage is part of what the buyer paid. Estimating commission from the item price alone therefore understates fees on any order with shipping. Shipping income and shipping cost are separate fields here so that gap is visible.

Why are no platform rates built in?

Rates vary by plan, category, promotion, and date, and change often. A built-in table with no version or source would silently produce wrong answers after the next change. Enter the rates from your seller dashboard and the result stays trustworthy.

BUSINESS AND COMMERCE · CALCULATED IN YOUR BROWSER

Marketplace Fee Calculator

Work out what actually lands in your account after commission, payment fees, and shipping.

Prepare your figuresPrice, quantity, costs, rates, shipping

Review the estimateFees / Payout / Profit

Input

Product and quantity

Selling price

Quantity

Product cost

Cost per item; multiplied by quantity.

Platform and payment fees

Commission

Payment fee

Fixed fee

Percentage fees use the buyer's total payment, including shipping charged.

Shipping and other costs

Shipping charged to buyer

Shipping you pay

Other cost

Amount per order, not multiplied by quantity.

Money breakdown

Buyer paid in total1,340.00

Commission− 73.70

Payment fee− 26.80

Fixed fee− 0.00

Net payout1,239.50

Total cost− 705.00

Revenue minus spend534.50

Profit margin39.89%

Effective fee rate7.5%

Total fees100.50

No currency is assumed — enter every amount in the same one. Results are estimates and are not a marketplace statement or a tax conclusion.

About this tool

Enter the price, costs, and each fee rate to see the commission, payment fee, and fixed charges in money terms, plus the net payout and profit. One detail sellers routinely under-estimate: most marketplaces charge commission on the total the buyer paid, shipping included, so charging for postage raises the base the commission is taken from. Marketplace rates are deliberately not built in — they change, and a stale table produces wrong answers without anyone noticing, so use the rates shown in your own seller dashboard.

How it works

Enter the selling price, quantity, and product cost.
Enter the commission %, payment fee %, and any fixed charge.
Enter the shipping you charge and the shipping you pay, then read the net payout and profit.

Assumptions and limits

You enter the rates; no marketplace's current fees are built in, because platform rates change and a hard-coded table quietly goes stale.

Privacy

Costs, revenue, and campaign figures are calculated only inside this browser. Nothing is uploaded, stored, or written to the URL or any log.

Frequently asked questions

Why is commission charged on shipping too?: Most marketplace transaction fees use the buyer's total payment as the base, and postage is part of what the buyer paid. Estimating commission from the item price alone therefore understates fees on any order with shipping. Shipping income and shipping cost are separate fields here so that gap is visible.
Why are no platform rates built in?: Rates vary by plan, category, promotion, and date, and change often. A built-in table with no version or source would silently produce wrong answers after the next change. Enter the rates from your seller dashboard and the result stays trustworthy.

← All business and e-commerce tools