Helpful Toolbox

Profit Per Sale Calculator

See exactly what you keep from each sale on any platform. Enter your price, costs, and fees — every fee field is editable so you can match your exact marketplace — and get net profit, margin, and break-even price instantly.

📖 How it works & FAQ

Know what you actually keep from every sale

A $30 sale is not $30 in your pocket. Between platform commissions, payment processing, shipping labels, product costs, and advertising, online sellers routinely keep far less than they expect — and some best-sellers quietly lose money on every order. This calculator works for any marketplace or storefront: Etsy, eBay, Amazon, Shopify, Poshmark, Depop, or your own website. Because every platform charges differently, the fee fields are fully editable — set the commission percentage, the fixed per-order fee, and the processing rates to match wherever you sell. The pre-filled fee figures are approximate defaults you can edit; check your platform's current fee schedule, and treat the results as estimates only, not financial advice.

How to use it

  1. Enter your sale price — the amount the customer pays for the item itself.
  2. Add your product cost (what it costs you to make or buy one unit) and the shipping cost you pay out of pocket.
  3. Set the platform fee percentage and the platform's fixed per-order fee to match your marketplace.
  4. Set the payment processing percentage and fixed fee for your checkout provider.
  5. If you run ads, enter your average ad cost per sale. Results update instantly as you type — no button to press.

FAQ

What is a good profit margin for online sellers?
Most handmade and print-on-demand sellers aim for a net margin of 25–40% after all fees. Below about 15%, a single fee increase or shipping price change can wipe out your profit. If your margin comes back low, try raising the price, reducing product or shipping costs, or trimming ad spend before cutting quality.
Why is my break-even price higher than my costs?
Percentage fees scale with your price, so raising the price also raises the fees you pay. The break-even figure accounts for that: it is the exact price where revenue covers product, shipping, ads, and every fee. Anything above it is profit.
How do I estimate ad cost per sale?
Divide your total ad spend over a period by the number of orders those ads produced. For example, $60 of ads that drove 20 orders is $3 per sale. If you do not advertise, leave the field at zero.
Are the default fees accurate for my platform?
They are typical marketplace figures, but every platform is different and rates change often. Look up the current fees for your marketplace and payment processor, then type the real numbers into the fee fields — the results update immediately.