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The Ultimate Seller Fee Calculator & Ecommerce Profit Calculator

Compare marketplace fees and instantly calculate your margins across Depop, Grailed, Poshmark, and Mercari to know exactly what you take home.

Depop Fee Calculator
Find your true margin after Depop's transaction fees, boosting costs, and payment processing.
Grailed Fee Calculator
Calculate Grailed commissions fees.
Poshmark Calculator
Break down the flat $2.95 vs 20% commission rules.
Mercari Calculator
Calculate the 10% selling fees.
Whatnot Calculator
Calculate whatnot selling fees.
eBay Calculator
Calculate eBay total fees.

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Latest Reseller Guides & Strategy Hub

Navigate marketplace strategies, bulk inventory sourcing, tax updates, and business write-offs.

How to Source eBay Vintage Clothing Bales
Scale your reselling business by sourcing eBay vintage clothing. Learn how to safely buy vintage clothing bales and mystery boxes while protecting your margins.
The Ultimate 1099-K Reseller Tax Guide
Stressed about new marketplace rules? Discover the exact thresholds, state reporting laws, and the difference between getting an IRS form and actually owing money.
Depop vs. Poshmark: Fee Comparison Guide
A comprehensive breakdown evaluating platform fee cuts, payment processing, and flat shipping rates to help you decide where your inventory yields the best margins.

Reseller Profit Margins & Marketplace Fees Explained

Someone on Depop just asked if I would take $4 and free shipping for a pristine vintage Levi's jacket. I am currently practicing deep-breathing exercises behind a load-bearing wall of pink polymailers. As the resale market evolves, tracking platform policies and shipping tiers is exhausting. Let us break down the most common questions so you can actually get paid.

Which selling platform has the lowest fees?

It entirely depends on your item, but figuring it out manually requires a PhD in theoretical physics. Some platforms lure you in with zero selling fees but quietly add payment processing, while others hit you with a flat rate plus a percentage. Using a seller fee calculator helps you compare marketplace fees instantly, so you know whether a platform is actually a good deal or just the "Ew, David" of ecommerce.

Read our full platform comparison

What is a good profit margin for reselling?

Generally, you are looking for 30% to 50% after deducting marketplace fees, shipping, and the cost of the goods. (Yes, you have to count the item cost. No, I do not want to talk about how much I spent at the Goodwill Outlet last week). Without a reliable ecommerce profit calculator, you risk underpricing your items and accidentally running a highly stressful non-profit out of your living room. We break down the exact percentage cuts so you can set your prices, print that label, and drop it at the post office before you decide to keep the vintage sweater for yourself.