Whatnot Seller Profit Calculator

Accurately calculates profit, fees, and margins for Whatnot sellers, including shipping and tax in the fee base.

Accurately calculate profit, fees, and margins for Whatnot sellers. Correctly includes shipping and tax. Whatnot Seller Profit Calculator is a side panel tool that shows exactly how much you'll make from a sale — before the platform settlement report comes in. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHY THIS EXISTS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Whatnot's processing fee is charged on your total order amount — sale price plus shipping plus tax — not just the item price. It's an easy detail to miss, and getting it wrong means misjudging your real margin on every sale. This calculator applies the fee correctly every time. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHAT IT DOES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✦ CORRECT FEE MATH Commission is calculated on your sale price. Processing fee is calculated on sale price + shipping + tax combined — matching Whatnot's actual fee structure. ✦ CATEGORY-AWARE Standard (8%), Electronics (5%), and Coins & Money (4%) commission rates, selectable from a dropdown. ✦ SEE YOUR REAL PROFIT Net profit, margin %, and ROI %, factoring in what you paid for the item and what you actually pay to ship it. ✦ TAX, EXPLAINED When tax is part of the sale, a hint clarifies that it raises your processing fee base without adding to your payout — an easy thing to miss. ✦ REMEMBERS YOUR LAST CATEGORY So you're not re-selecting it every time you open the panel. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ HOW TO USE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1. Click the extension icon to open the side panel 2. Pick your category 3. Enter sale price, shipping, tax, and your costs 4. Read your real numbers instantly ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ PRIVACY, FIRST ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - All calculations happen locally in your browser - No account, no login, no sign-up - No data sent anywhere — the extension makes zero network requests and needs no permission to read any website - The only thing saved is your last-selected category, stored locally - No ads, no analytics, no tracking ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ FREE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Completely free. If it helps, a review helps other Whatnot sellers find it.