From reselling profits to 1099-K taxes — know your real numbers
Reselling on eBay, Poshmark, Mercari, or Amazon can be profitable — but most sellers dramatically overestimate their earnings because they forget about platform fees (10-20%), shipping costs, payment processing fees, and taxes. The federal 1099-K threshold is back at more than $20,000 and more than 200 transactions (OBBBA made that permanent after the $600 rule never took effect), so many casual sellers never receive a form — but the profit is taxable whether a form arrives or not. This toolkit gives you the tools to calculate your true profit, estimate your tax obligation, and stay compliant with sales tax nexus rules — all free, all in your browser.
See your real profit after platform fees, shipping, and taxes.
A 1099-K is issued only above $20,000 and 200 transactions. Estimate your tax now.
Check which states require you to collect sales tax.
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Your gross sale price is not your profit. To find your real profit, subtract: (1) the cost of goods sold (what you paid for the item), (2) platform fees — eBay charges 13.25% + $0.30 per transaction, Poshmark charges 20% on items under $15 or a flat $3, Mercari charges 10% + $0.30, (3) shipping costs, (4) payment processing fees (2.9% + $0.30 typical), and (5) estimated taxes (25-30% of net profit).
Our Reseller Profit Calculator handles all of this automatically. Enter your sale price, purchase price, platform, and shipping — it shows your true margin and ROI. For dropshipping, use the Dropship Profit Calculator which factors in supplier costs and ad spend.
For 2026, payment processors (PayPal, Venmo, eBay, Poshmark, Stripe, etc.) must issue Form 1099-K only when they process more than $20,000 in payments for goods and services AND more than 200 transactions for you during the year. That is the historical rule, restored and made permanent by OBBBA (July 2025); the $600 threshold from the American Rescue Plan was repeatedly delayed, never took effect, and has been repealed.
Important: receiving a 1099-K does not automatically mean you owe tax on the full amount. You only owe tax on your net profit (sale price minus cost of goods sold and allowable expenses). If you bought an item for $50 and sold it for $80, you owe tax on the $30 profit — not the $80 sale price.
If you flip items as a business (regular buying and selling for profit), you owe self-employment tax (15.3%) plus income tax. If you occasionally sell personal items at a loss, those sales are generally not taxable. Use the 1099-K Tax Estimator to calculate your exact obligation.
For sales tax: if you have economic nexus in a state (typically $100,000 in sales or 200 transactions), you must register, collect, and remit sales tax. Marketplaces like eBay and Amazon now collect on your behalf in most states, but direct sales on your own website may still require registration.
A payment platform must issue a 1099-K only when it processes more than $20,000 in payments for goods and services AND more than 200 transactions for you in the year — both tests must be met. This includes eBay, Poshmark, Mercari, PayPal, Venmo, and other platforms. The $600 threshold from the American Rescue Plan never took effect and was repealed by OBBBA, so guidance quoting $600 is out of date. Some states still use lower thresholds of their own.
No. You only owe tax on your net profit — the difference between your sale price and what you originally paid for the item, minus allowable expenses like platform fees and shipping. If you sold a personal item at a loss, it is generally not taxable.
If you have economic nexus in a state (typically $100,000 in sales or 200 transactions), you must collect and remit sales tax. However, most marketplaces (eBay, Amazon, Etsy) now collect sales tax on your behalf under marketplace facilitator laws. Use our Nexus Checker to verify your obligations.
Subtract the purchase price, platform fees (eBay: 13.25% + $0.30; Poshmark: 20%; Mercari: 10% + $0.30), shipping costs, payment processing fees (2.9% + $0.30), and estimated taxes (25-30% of net profit) from your sale price. Our Reseller Profit Calculator does this automatically.
If you regularly buy items with the intent to resell for profit, the IRS considers this a business. You owe self-employment tax (15.3%) plus income tax on your net profit. You should file Schedule C and make quarterly estimated tax payments.
Common deductions include: cost of goods sold, platform/seller fees, shipping and packaging costs, home office (if used exclusively for business), mileage for sourcing trips, software subscriptions, and business equipment. Keep receipts and use Schedule C.
If you expect to owe more than $1,000 in tax for the year, yes. Quarterly deadlines are April 15, June 15, September 15, and January 15. Use our 1099-K Tax Estimator to calculate your quarterly payment amounts.
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