If you sell on eBay long enough, a tax form will show up in January that looks like the IRS thinks you made a lot more money than you did. That form is the 1099-K, and the first time most sellers see it, the number on it is alarming.
The number is not wrong, exactly. It is just not what it appears to be. The 1099-K reports gross payment volume, which is a very different thing from profit. Understanding that difference, and keeping the records that prove it, is most of the work. This piece is orientation to the form and the thinking around it, not tax advice, and it says so here once so neither of us forgets.
What the form is and who sends it
A 1099-K is an information return. Payment settlement entities, which is the IRS term for payment processors, payment apps, and online marketplaces, file it with the IRS and send you a copy. eBay, as an online marketplace that settles your payments, sits in that IRS category. When you sell through the platform, the payments you receive are the kind this form reports, whether or not you think of yourself as running a business.
The form itself is short. It reports the gross amount of payments you received for goods or services through the platform during the calendar year, and that is mostly all it carries. No deductions, no cost of goods, no net figure. Just the gross.
Your copy has to reach you by January 31 of the following year. If you sold through eBay and hit the reporting threshold, the form will be there.
The gross number is not what you owe
This is the part that panics people, and it is worth spending a minute on because the misunderstanding costs real sleep.
The 1099-K reports gross payments. That means the full amount the buyer paid, before eBay takes its fees, before you account for the cost of the item, before shipping materials, before anything. If you sold a postcard for a modest price plus shipping, the form captures the whole transaction. It does not know or care what you paid for that postcard, what the fees were, or whether you made a dime.
Your taxable income is what remains after your legitimate expenses. The 1099-K is the starting line, not the finish. Cost of goods sold, eBay fees, shipping costs, packing materials, mileage to the post office, the listing tools you pay for, all of that comes off the top when you report. The form tells the IRS what flowed through the platform. Your records tell the IRS what you actually earned.
That gap between gross and net is exactly why records matter, and it is the biggest gap most sellers have never thought about until the form arrives.
Hobby or business, and why it matters
The IRS draws a line between a hobby and a business, and where you fall changes what you can do at tax time. A business operates to make a profit. A hobby is something you do for recreation, not profit. Those are the IRS’s own words, and the distinction is not academic.
If your selling activity is a business, you report income and deduct ordinary business expenses on Schedule C. Cost of goods, fees, supplies, mileage, all of it reduces your taxable income. If it is a hobby, you still report the income, but deducting expenses against it works differently and is far more limited. The practical effect is that hobby treatment can leave you paying tax on gross receipts you never actually pocketed as profit, which is the outcome nobody wants.
The IRS uses nine factors to decide which side of the line you land on. They look at whether you keep complete and accurate records, whether you put in time and effort that suggest you intend to make a profit, whether you depend on the income, whether you have changed your methods to improve results, and whether you have a history of profit in the activity, among others. No single factor is meant to settle it on its own; the picture is weighed as a whole.
For most of us who sell collectibles regularly on eBay, the honest answer is that it is a business. You buy inventory, you list it, you ship it, you track what sold and what did not, and you intend to come out ahead. Treating it that way from the start, rather than calling it a hobby until the form arrives, is the cleaner path. It costs you the discipline of keeping books, but it buys you every deduction you are entitled to.
Thresholds change, and that is the point
The reporting threshold for 1099-K has moved more than once in recent years, and the IRS has announced changes, delayed them, and revised them again. Rather than print a number here that may be stale before you read it, I will point you to the two pages that carry the current rule.
The IRS publishes the current threshold and any recent changes on its own 1099-K pages, which are the authoritative source and are listed in the sources below. eBay maintains its own help pages on seller taxes for the platform side. Check the current rule before you file, because the number that applied last year may not be the number that applies this year, and planning around a stale threshold is planning around the wrong constraint.
One thing that has not changed: whether or not you receive a 1099-K, you are still required to report your income. The form is a reporting mechanism, not an eligibility test. If you sold and earned a profit, that income is reportable regardless of whether a form showed up in January.
Personal items and the loss question
Sellers who are also collectors sometimes sell personal items at a loss. A postcard you bought years ago for your own collection, sold now for less than you paid, is a different animal than inventory you bought to resell. The IRS treats personal items sold at a gain as reportable income. Personal items sold at a loss are generally not deductible, which means you do not owe tax on them, but you also do not get to write off the loss.
The 1099-K does not know the difference. It reports the gross amount of the sale regardless of whether you made or lost money on the item. That is one more reason your records need to include what you paid for things, not just what you sold them for. When the form reports a transaction and you need to show the IRS that it was a personal item sold below cost, your purchase receipt is what makes the case.
The records that make tax season boring
The best thing a seller can do about the 1099-K is make it unremarkable. When the form arrives and you already know what every line means because you tracked it all year, tax season is bookkeeping, not archaeology.
What to track, at minimum:
- Cost of every item you bought for resale, with a date and a source. Estate sale receipt, auction invoice, the lot you picked up at a flea market. If you paid for it, write down what you paid.
- Every sale: what sold, when, for how much, and what eBay charged you in fees.
- Shipping costs: postage, packing materials, mailers, tape. All of it.
- Other business expenses: mileage, listing software, reference books, the table at a show if you do shows.
Keep those four categories current, and when the 1099-K arrives, you reconcile the gross number against your sales records, subtract your documented expenses, and report the net. The form stops being alarming the moment you can explain every line of it.
A spreadsheet works. Accounting software works. A notebook works if you are disciplined about it. The method matters less than the consistency. The sellers who get into trouble are the ones who kept nothing all year and are now trying to reconstruct a cost basis from memory in April.
What carries over
The 1099-K reports gross payments, not profit. eBay sends it because eBay processes your payments. The gross number is the start of the math, not the answer. Hobby versus business treatment determines what you can deduct, and for a working seller the business path is almost always the right one. The threshold moves, so check the current rule before you plan around it. And the records you keep all year are the thing that turns a scary form into a routine one.
Running eBay as a business touches more than taxes, and the operational side of it, from how you structure listings to how you track inventory, is its own set of pieces in this group.