7 platforms compared. Real profit AFTER tax.
Platform fees (eBay 13.25%, Poshmark 20%, Mercari 10%+payment, Etsy 6.5%+payment) are based on published 2026 rates. Tax estimates use 2026 IRS brackets and simplified state rates. Actual fees may vary by category and listing type.
The number on the listing is not what you keep. This tool walks a sale through every deduction: purchase price → platform fee → shipping → tax. Platform fees vary a lot — eBay charges13.25% + $0.30, Poshmark a flat 20%, Mercari 10% + payment fee, Etsy 6.5% + payment fee. Then your net profit is taxed at your marginal rate, so the "true profit" line depends on your annual income and filing status too. The platform with the lowest headline fee is not always the winner — the fee structure vs. your sale price and volume decides it.
$45.00 − $15.00 purchase − $8.50 shipping − $6.26 platform fee = $15.24 net, then 22% tax leaves $11.88 of true profit.
Dario buys a pair of sneakers for $15 and lists them at $45 with $8.50 shipping. He compares eBay (13.25% + $0.30) against Poshmark (20%). His $50,000 annual income puts him in the 22% single-filer bracket.
To use it: open the tool, enter your inputs, and get instant results — compare real profit across 7 reselling platforms after fees and 1099-K tax. Everything runs locally; nothing is uploaded.
FreeToolHub Reseller Profit Calculator is a free browser-based tool — compare real profit across 7 reselling platforms after fees and 1099-K tax. No signup, no upload; everything runs locally in your browser.
See your real profit after all fees. Compare eBay, Poshmark, Mercari side by side. Free.
The Reseller Profit Calculator prices a single item across seven selling platforms and shows what you truly keep after fees and taxes. Enter your purchase price, sale price, and shipping cost, then check the platforms you are considering: eBay, Poshmark, Mercari, Facebook Marketplace, Depop, Etsy, and Amazon. Each platform's real fee formula is applied — eBay charges 13.25 percent final value plus 2.9 percent payment processing plus $0.70 in fixed fees, Poshmark takes a flat $2.95 on sales under $15 or 20 percent above that. The calculator then layers on self-employment tax, federal income tax using your filing status, and state income tax, ranking every platform by true after-tax profit and flagging the best one.
Thrift flippers and garage-sale resellers use it to decide where a $50 jacket nets more: the fee difference between Poshmark's 20 percent and Facebook Marketplace's 5 percent often decides the listing. Casual sellers cleaning out closets use the 1099-K warning — a platform must file that form only when it processes more than $20,000 and more than 200 transactions for you in a year, so a modest side hustle usually draws no form at all (the $600 threshold from the American Rescue Plan never took effect and has been repealed). Part-time sellers with day jobs enter their annual income because side-hustle profit is taxed at their marginal bracket, not zero. Cross-listers who post everywhere compare after-tax results in one pass, and anyone deciding between selling online versus a local cash sale sees exactly what the platform convenience costs.
(1) Enter the deal: purchase price, expected sale price, and shipping cost — the sample loads a $15 thrift find selling for $50 with $5 shipping. (2) Add your tax situation: annual income, Single or Married filing jointly, and your state from all fifty plus DC. (3) Check the platforms to compare and press Calculate. Each platform computes net profit as sale price minus purchase, shipping, and its fee formula, then estimates tax: self-employment tax — 12.4 percent Social Security up to the wage base plus 2.9 percent Medicare — applied to 92.35 percent of net earnings, a half-SE-tax deduction, the standard deduction, progressive federal brackets, and state income tax. (4) Read the ranked cards showing fee, net, tax, true profit, and margin, with the best platform highlighted.
Each platform uses its published 2026 structure. eBay: 13.25 percent final value fee plus 2.9 percent payment processing plus $0.40 and $0.30 fixed — $8.78 on a $50 sale. Poshmark: $2.95 flat under $15, otherwise 20 percent — $10.00 on that same $50 item. Mercari: 10 percent commission plus 2.9 percent payment plus $0.50. Facebook Marketplace: 5 percent with a $0.40 minimum — just $2.50 at fifty dollars. Depop: 10 percent plus 2.9 percent plus $0.30. Etsy: 6.5 percent transaction plus 3 percent payment plus $0.20 listing and $0.25 fixed. Amazon: $0.99 plus 15 percent. The same item can therefore cost between $2.50 and $10.00 in fees depending on where it sells, before any tax.
Healthy resale margins depend on category: thrift/flipping targets 3-5x cost (200-400% margin) because sourcing labor is the real expense; retail arbitrage typically runs 30-50% after fees; electronics and collectibles vary wildly with demand. The honest floor: your margin must cover platform fees (~13-15% on eBay/Poshmark for most categories), shipping surprises, returns, self-employment tax, and your time — below a 25% net margin, flipping is a hobby with receipts.
Dramatically — and unevenly. eBay takes ~13.25% final value fee plus $0.30; Poshmark takes 20% (flat $2.95 under $15); Amazon referral fees run 8-15% by category; Mercari 10% plus payment fees. A $40 sale nets $34 on eBay but $32 on Poshmark. The calculator models per-platform fees so a multi-channel reseller sees which platform actually pays more on the same item instead of assuming one is uniformly cheapest.
Yes — reselling profit is self-employment income, taxed at income tax plus 15.3% SE tax, and platforms report it: eBay, Poshmark, and others issue a 1099-K once you cross reporting thresholds. The good news is you're taxed on profit, not revenue — cost of goods, fees, and shipping you paid are all deductible, which is exactly what the calculator nets out. Keep purchase receipts; without them the IRS can treat your entire sale price as taxable gain.
The usual three: packaging materials ($0.50-$2 per order), return handling (2-5% of sales, brutal in apparel), and their own sourcing time — driving 90 minutes to thrift stores is unpaid labor that only pays off if the margin math includes it. Fuel and mileage are deductible but real. This calculator includes shipping and fee fields so the profit number reflects the transaction, and the annual-income field prices the self-employment tax that surprises first-year resellers in April.
It calculates net profit after platform-specific fees: eBay (13.25% final value + $0.30 per order), Poshmark (20% flat commission), Mercari (10% + $0.50), and Facebook Marketplace (5% per shipment). Enter your sale price and cost basis to see true margin side by side.
Yes. Input your shipping cost, packaging materials, and applicable sales tax to see your actual take-home profit. A $50 item on Poshmark with $7 shipping and $2 packaging nets roughly $28.50 after the 20% commission—this tool shows that breakdown instantly for any platform.
Why did the fish get bad grades?
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