Free tool

Net proceeds calculator for eBay, Poshmark, Mercari, Depop and more

Pick three marketplaces and enter one item. The calculator applies each marketplace's US seller fees, read on its own fee page on September 23, 2026, and charges each fee on what that marketplace charges it on. It runs in your browser and sends nothing anywhere.

Which fees does the calculator use?

The calculator uses each marketplace's US seller fees as published on its own help or fee page, read on September 23, 2026. Where a fee depends on category or sales volume, the table says which version is built in. Pick Custom for anything else, or if a source page now shows a different number.

Not built in: Depop's 12% Boosting fee, Etsy Ads and Offsite Ads, eBay's 1.65% international fee and the extra final value fee on Below Standard accounts, Whatnot's lower rates above $15,000 in four weeks, Mercari's $3 Instant Pay, and Poshmark's Texas Seller Fee Tax. Add any that apply to you through Custom.

Why does what a fee is charged on matter?

Because two marketplaces can take very different amounts from the same sale no matter how their rates compare. eBay's 13.6% applies to the item, the shipping and the sales tax. Poshmark's 20% applies to the sale price alone. On a $40 item with $8 shipping and 6% tax, eBay's fees come to $7.25 and Poshmark's to $8.00: 75 cents apart, on rates 6.4 points apart.

The marketplace fee comparison walks through each marketplace's base, with what you keep at $15, $40 and $100.

Why run it at more than one price?

Flat fees and fees on shipping land hardest on cheap items. Poshmark's $2.95 is 29.5% of a $10 sale. Depop's $0.45 plus processing on $8 of shipping is 10.6% of a $10 sale and 4.2% of a $100 one. Run your cheapest common item, your median and your most expensive. If the order changes, that tells you which part of your inventory belongs where.

What the calculator leaves out

• Your time. A marketplace that runs on daily sharing or live shows costs hours no fee table shows, and every listing takes time to write: an experienced seller takes 4 to 7 minutes to type one eBay listing by hand. FlowLister, the tool we make, does that AI step in about 30 seconds. Price your hours yourself.
• How fast it sells. An item that sells this week at a higher fee beats one that sits for months at a lower one.
• Cancellations. A canceled sale can cost money of its own: Mercari reserves the right to charge 5% of the item price, up to $25, when a seller cancels. Stopping double sales covers the rest.

Fee calculator questions