Reseller Taxes and the 1099-K: What to Know for 2026

Every reseller hits the same moment of dread around tax season: a form shows up from a marketplace, the number on it looks nothing like what you actually made, and you have no idea what you owe. The good news for the 2026 tax year is that the rules got simpler than the version everyone feared, and the work that protects you is mostly bookkeeping you can do in a few minutes a week. By the end of this guide you will understand what triggers a 1099-K, why the form is not your tax bill, how cost basis lowers what you owe, and which records keep you calm in April.

One thing first, stated plainly. This is general information, not tax advice. Tax situations differ, the rules can change, and a professional who knows your numbers is worth the fee. Treat what follows as a map, then check the route with a tax preparer before you file.

What the 1099-K actually is

A Form 1099-K is an information return. A marketplace or payment platform, what the IRS calls a third-party settlement organization, uses it to report the gross payments it processed for you during the year. Think eBay, Poshmark, Mercari, Depop, and the payment apps behind them. The form goes to you and to the IRS, and its job is to improve voluntary tax compliance, not to calculate anything you owe.

The number that matters most about a 1099-K is the one that confuses people: it reports gross payments. That figure includes the full sale price before marketplace fees, shipping you collected, and refunds. It is almost never the same as your actual profit, which is why the form is a starting point for your records, not the final word on your taxes.

The 2026 federal 1099-K threshold

For the 2025 and 2026 tax years, a marketplace is required to send you a federal Form 1099-K only when both of these are true during the calendar year: your gross payments for goods or services are more than $20,000, and you have more than 200 transactions. According to the IRS, both conditions must be met, not just one (see Understanding your Form 1099-K).

This reversed what many resellers were bracing for. Earlier rules had pointed toward much lower triggers, including a widely discussed $600 figure. Legislation passed in 2025 reinstated the higher $20,000 and 200-transaction threshold that stood for years, and the IRS has confirmed it applies to 2025 and beyond. If you dreaded a form over a few hundred dollars in sales, that worry is off the table at the federal level for now.

Two caveats remain. The threshold is generally measured per platform, so a seller active on both eBay and Poshmark looks at each one separately rather than adding them together. And some states set their own lower thresholds, so you might still receive a form even if you stayed under the federal line. State rules vary and can change, so confirm your own rather than assuming the federal number applies everywhere.

The part people miss

Here is the idea that prevents the most expensive mistakes. The threshold decides whether a form gets generated. It does not decide whether your income is taxable. Income from selling goods is generally reportable whether or not a 1099-K ever lands in your inbox. A seller who makes $8,000 in profit and receives no form still has income to report. The form is paperwork; the tax obligation comes from the income itself. When in doubt, a tax professional can tell you how your specific sales should be treated.

Hobby or business: why the label matters

How your reselling is classified changes how you report it and what you can deduct. The IRS draws a line between a hobby and a business, and it looks at the whole picture rather than a single rule of thumb. Factors include whether you run the activity in a businesslike way, whether you depend on the income, the time and effort you put in, and whether you are trying to make a profit.

The practical difference is large. A business generally reports income and expenses on Schedule C, which lets you subtract the cost of goods and your operating expenses to arrive at net profit, and pays tax on that profit. Hobby income is generally reported as income, but the expenses are far harder to deduct. For most people sourcing inventory regularly and selling with the intent to profit, the activity looks like a business, and Schedule C is where it tends to land. Because the classification carries real consequences, it is a good question to settle with a professional early rather than at filing time.

There is also self-employment tax to plan for. Net profit from a reselling business is generally subject to self-employment tax on top of income tax, which catches many first-year sellers off guard. Setting aside a portion of each sale for taxes as you go is a habit that prevents a nasty surprise.

Cost basis: the number that lowers your tax

Cost basis is the most important concept in this entire guide, because it is the difference between paying tax on your sales and paying tax on your profit. Your cost basis is generally what you paid for an item. When you sell, your taxable gain is roughly the sale price minus your cost basis and minus the costs of selling, such as marketplace fees and shipping.

A quick example shows why this matters. Say you buy a jacket for $15 at a thrift store and sell it for $60. The marketplace processed $60 and may report that gross figure. But your cost basis is $15, and if fees and shipping came to $12, your actual taxable gain is closer to $33. Without tracking that $15 cost and those selling costs, you risk paying tax as if the full $60 were profit. Multiply that across a year of inventory and the difference is enormous.

This is exactly why resellers who keep records pay less than resellers who do not. The receipt for the jacket is not clutter. It is a deduction. Items you sell from your own closet have a cost basis too, usually what you originally paid, though personal items sold at a loss have their own rules worth asking a professional about.

Deductions resellers commonly track

Beyond the cost of inventory, a reselling business generally has ordinary operating expenses that reduce net profit. The specifics depend on your situation, but resellers commonly keep records for categories like these:

• Marketplace and payment processing fees
• Shipping supplies and postage you pay
• Mileage for sourcing trips and post office runs
• Packaging materials, from poly mailers to tape
• A portion of phone and internet used for the business
• Software and subscriptions used to run the shop
• Home office space, if it qualifies under the rules

Mileage is the one resellers leave on the table most often. The driving you already do to source inventory can be a real deduction once it is written down. The IRS standard mileage rate for 2026 is 70 cents per mile, so a habit of logging your sourcing trips turns ordinary errands into a number that lowers your taxable profit. Whether a given expense qualifies, and how to handle mixed personal and business use, is worth confirming with a preparer.

Record-keeping that keeps you calm

The resellers who stay relaxed at tax time are not the ones with the best memory. They are the ones with the simplest system they actually maintain. You do not need accounting software to start. A spreadsheet with a row per item and columns for purchase date, item cost, sale price, marketplace, fees, and shipping captures almost everything that matters. Add a running mileage log and a folder for receipts, digital or paper, and you have the backbone of a clean return.

The trick is to make it small and frequent. A short weekly slot, fifteen minutes on a Sunday, keeps the numbers accurate while the week is fresh, instead of trying to reconstruct a year of transactions in April. Log what you bought and what it cost, record what sold and the fees, and note your miles. Marketplaces let you download transaction reports, which makes reconciling your own records against their totals far easier when a 1099-K does arrive.

Your listing workflow quietly helps your books too. Consistent listings, with clear titles, complete item specifics, and accurate condition, produce cleaner sales records and fewer disputes, which means fewer messy adjustments at tax time. If writing those listings at volume is the bottleneck, a tool like QuickListAI reads your photos and writes the title, description, and item specifics, then auto-fills them into the listing form across the marketplaces you sell on. You stay in control of price and condition. It does not do your taxes, and no tool should claim to, but a steadier listing routine makes the bookkeeping behind it easier to keep.

A simple plan for the 2026 tax year

You do not need to become an accountant. You need a few habits that compound. Track cost basis on every item from the day you source it. Set aside a slice of each sale for taxes so the bill is funded before it arrives. Keep that weekly fifteen-minute bookkeeping slot. Download your marketplace reports so your records and any 1099-K agree. And settle the questions that depend on your specific situation, hobby versus business, state thresholds, which deductions apply, with a tax professional who can look at your actual numbers.

Get those basics in place and the form that used to cause dread becomes what it was always meant to be: a piece of paper that matches records you already trust.

When listing at volume is the part slowing your records down, install QuickListAI free on the Chrome Web Store and let it write and auto-fill your listings while you keep clean books behind them. Your first listings are free.

Frequently asked questions