A $50 sale is never $50.
Every platform takes its cut before the money reaches you. Pick where you sell and see your receipt.
Referral fee in most categories (15%), seller-fulfilled.
Where does your $40 go?
One sale, four platforms. The amber slice is what each one takes before you get paid.
- Shopifykept $38.543.6%in fees
- Etsykept $35.75$4.2510.6%in fees
- eBaykept $34.16$5.8414.6%in fees
- Amazonkept $34.00$6.0015.0%in fees
Tip: try $10. Fixed per-order fees take a much bigger share of cheap items, so the order of the platforms can change with your price.
Selling and payment fees only, US sellers: Amazon most categories, Shopify Basic with Shopify Payments, Etsy without Offsite Ads, eBay most categories. Tap a platform for the full calculator with shipping, ads and more.
Every tool, free
8 calculators and generators. No sign-up, no limits.
- Amazon Amazon Seller Profit Calculator 2026 referral fees by category, FBA fees by size tier, ads and break-even price.
- Shopify Shopify Fee Calculator Fees and profit per order, monthly costs, and which plan is cheapest for your sales.
- Etsy Etsy Fee Calculator Listing, transaction, processing and Offsite Ads fees, plus the price for your target margin.
- eBay eBay Fee Calculator Final value fees by category, per-order fee, Promoted Listings and your break-even price.
- Pricing Profit Margin Calculator Margin, markup and the price you need for a target margin.
- Ads Break-even ROAS Calculator Minimum and target ROAS, max cost per order, and whether a campaign is really profitable.
- Shipping Dimensional Weight Calculator Billable weight with 2026 USPS, UPS, FedEx and Amazon rules, compared side by side.
- Paperwork Free Invoice Generator Fill in, download as PDF. Nothing stored on our side.
Got a quick question?
Search the tools, or type a platform and a price like "etsy 25" for an instant receipt.
An item that costs $12, and you want a 40% margin
Charge $20.00
That leaves $8.00 profit (a 67% markup). Adding 40% to the cost would only give a 28.6% margin.
8 free tools. No sign-up. Your numbers never leave your browser.
Fees you can trust
Taken from each platform's own pages. Every calculator shows when it was last checked. Latest check: Oct 16, 2026.
- Amazon
US fee schedules, Oct 16, 2026 - Shopify
shopify.com/pricing, Oct 16, 2026 - Etsy
Fee and payments policies, Oct 16, 2026 - eBay
Selling fees help page, Oct 16, 2026 - USPS, UPS, FedEx
Dimensional weight rules, Oct 16, 2026
Questions sellers ask
Are these calculators free?
Yes. Every tool on MarginKit is free, with no sign-up and no limits.
Is my data private?
Yes. All calculations run in your browser. The numbers, client details and logos you enter are never sent to or stored on our servers.
How current are the fees?
Each calculator uses the fees the platform currently publishes and shows the date they were last checked. When a platform announces new fees, the calculator is updated.
Which platform has the lowest fees?
On selling and payment fees alone, your own Shopify store usually takes the smallest cut, then Etsy, eBay and Amazon. But marketplaces bring you buyers, while a Shopify store needs its own traffic, so compare your full costs, including ads, with each platform's calculator.
Need a store built or fixed?
The team behind MarginKit builds and optimizes Shopify stores for sellers.