Business and Seller Calculators
Marketplace and payment fees are quoted as small percentages and compound into something much larger by the time a sale settles. These calculators use published fee schedules and show the version and date they were taken from.
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Marketplace fees
Compare what you keep selling the same product on Amazon, Etsy, eBay, Shopify, TikTok Shop, or direct, using each platform’s published fee schedule.
$2,239.50typical · 100 units a month at $45.00, estimated from published rates
Exact figure. This calculator has no modeled range — the number follows directly from your inputs.
What you keep per sale, and how many sales it takes
Margin tells you whether a product works. Break-even tells you whether the business does. They use the same numbers and answer different questions, and neither is safe to look at alone.
- Profit marginWork out profit per unit and margin after product cost, shipping, packaging, platform fees, and payment processing — with markup shown alongside.
- Break-evenWork out how many units you need to sell to cover fixed costs, with platform and payment fees counted in the variable cost of each sale.
Everything else in Business & Seller
- MarkupTurn a cost into a price using markup or a target margin, and see instantly what each one means in terms of the other.
- Product pricingWork out what to charge to hit a target margin, counting materials, your time, packaging, fees, returns, and discounting.
- Freelancer rateWork out the hourly rate you need as a freelancer, counting unbillable hours, self-employment tax, insurance, retirement, and unpaid invoices.
How these estimates are built
Marketplace and payment fees are taken from published fee schedules, with the version and the date they were read shown on every result. Fees change without notice and often without announcement, so the date matters as much as the number.
Where no public agency publishes what a calculation needs, we say so plainly and label the figure as an assumption rather than dressing it up as sourced. Every result shows its own provenance, and our full method is documented.
- Primary dataset
- Published marketplace and payment fee schedules
- July 2026
- Coverage
- Major US marketplaces and processors
- Every estimate
- shows a low, typical and high range, its line-by-line breakdown, and the published source behind each figure.