Form W-9 for online sellers
Every marketplace that settles your buyers’ payments has to report what it settled, and it needs a certified name and TIN first. The form takes two minutes. The number that arrives the following January is where sellers run into trouble, because it reports gross and ignores everything that came out of it.
The threshold, the gross figure, and which schedule
- Who asks
- Every marketplace and payment app that settles your sales
- Form that follows
- Form 1099-K, under IRC 6050W
- Threshold
- More than $20,000 and more than 200 transactions
- Retroactive?
- Yes. The restored test governs the 2025 tax year as well as 2026 onward
- What box 1a shows
- Gross settled payments, before fees, refunds and shipping
- Corporate exception
- None. Section 6050W has no corporate payee exception
- Your return
- Schedule C for a business; Schedule 1 or Form 8949 for personal items
Where the form lives on a marketplace
Look under account settings for a section called tax information, taxpayer details, or 1099-K settings. The wording differs by platform and changes every couple of years. What you are looking for is a screen that asks for a legal name, a taxpayer identification number and a classification, then makes you check a box confirming the information is correct under penalties of perjury. That screen is a Form W-9. Nobody labels it one.
The IRS permits electronic collection where the system reproduces the certification language and captures a valid electronic signature, so a well-built settings page is as good as a signed PDF and considerably harder to lose. The conditions it has to meet
Every marketplace lets you view the tax information it holds. Two minutes in there each autumn catches the stale address, the maiden name and the transposed digit that would otherwise produce a mismatched 1099-K and a B notice in the spring. Why the pair has to match
The threshold went back up, and it went back in time
Both tests have to be met before a marketplace owes you a form, and sellers routinely meet one without the other. Three hundred small sales totaling $8,000 produce nothing, and neither does $60,000 across forty large orders. The restored test also reaches back over the 2025 tax year rather than starting in 2026, so a seller who braced for a form covering 2025 may never receive one. What the 2025 legislation did and the form itself, box by box.
The threshold decides what the marketplace has to send. It decides nothing about what you owe. Profit on goods you bought to resell is taxable at any volume, with or without a 1099-K, and the practical effect of a higher threshold is that the annual reminder of how much you sold stops arriving. Download each marketplace’s yearly sales report in January and store it somewhere that will outlive your account.
Box 1a is gross, and gross is a bigger number than you expect
This is the single most common shock. A seller who netted $30,000 gets a 1099-K reading $47,000 and concludes the marketplace has made an error. It has not.
| Item | Deducted from box 1a? | Where it goes instead |
|---|---|---|
| Marketplace commission and listing fees | No | A business expense on Schedule C |
| Payment processing fees | No | A business expense on Schedule C |
| Shipping labels bought through the platform | No | A business expense on Schedule C |
| Shipping the buyer paid you for | No, it is part of the settled amount | Gross receipts, offset by the postage expense |
| Refunds and returns | No | Returns and allowances, reducing gross receipts |
| Chargebacks | No | Treated with your other losses on the same sales |
| Promotional discounts and coupons | No | Reduced receipts or an advertising expense, depending on the mechanics |
| What you originally paid for the goods | No, and the platform has no way to know it | Cost of goods sold |
The instructions for the form say this plainly: box 1a shows the gross amount of the reportable payment transactions, without adjustment for credits, discounts, fees, refunded amounts or anything else. Reconcile the figure against your own marketplace reports before you file. Where it genuinely does not reconcile, ask the platform for a corrected form rather than quietly reporting a different number, because the IRS holds their copy too.
Selling your own things at a loss
Clearing out a closet is not a business, and the tax result is usually nothing owed. Getting to nothing owed still takes a line on the return, because a loss on personal-use property is not deductible and the proceeds have been reported to the IRS.
Work out what you paid
Your basis in a personal item is generally what it cost you. A receipt is ideal and a reasonable reconstruction is what most people actually have. Write down how you arrived at the figure while you still remember.
Sold below what you paid
No gain, no deductible loss. IRS guidance offers two routes. You can report the payment at the top of Schedule 1 (Form 1040) and offset it with an equal entry so the net is zero, or you can report the sale on Form 8949, which carries to Schedule D. Either way the amount reported to the IRS is accounted for and no tax results.
Sold above what you paid
That is a capital gain, and collectors hit this more often than they expect. Figure the gain on Form 8949 and carry it to Schedule D. Holding period decides whether it is short or long term.
Mixed year
Personal clear-out plus genuine resale activity in the same year means two calculations. Keep the streams apart in your records from the start; separating them in April from a single bank statement is grim work.
The form is filed with the IRS whether or not you agree with it. Silence on your return against a reported amount is the pattern most likely to generate a notice, and answering that notice costs far more effort than the two lines would have. Report it and zero it.
Buying to resell is a business
Sourcing inventory to sell at a profit is a trade or business, and the answer does not change because it runs from a spare bedroom or because no 1099-K arrived. Gross receipts go on Schedule C. Cost of goods sold comes off, along with fees, postage, packaging, mileage to the post office and the software you use to list. Net profit carries income tax and self-employment tax, and because nothing is withheld along the way, quarterly estimated payments are usually part of the deal.
Two specifics catch new sellers, and both of them look like bookkeeping trivia until they change a number on the return. Inventory is deducted when it sells rather than when you buy it, so a December stock-up does not reduce that year’s profit by a dollar and the cash-flow relief you felt in December arrives as a tax bill in April. Sellers who buy heavily in one year and sell through in the next find this genuinely disorienting the first time. The second specific is state sales tax: where a marketplace facilitator collects and remits it on your behalf, the obligation is generally the marketplace’s rather than yours, but whether the collected tax flows through your reported gross receipts depends entirely on how that platform structures the settlement. Two marketplaces can handle it differently and both be right. Read your own settlement reports instead of assuming, because the assumption that produces a clean spreadsheet is not reliably the one that matches the 1099-K.
Sellers sometimes describe a resale operation as a hobby in the hope that the income becomes optional. It does not. Income is reportable either way, and hobby classification removes your ability to deduct expenses against it, which makes the outcome worse. Publication 525 covers where the line sits.
What to put on each line
- Typing your shop name on Line 1. It belongs on Line 2, and the mismatch fails TIN matching.
- Checking the LLC box because you formed a one-person LLC. A disregarded single-member LLC uses the first box and the owner’s TIN. Why
- Selling under a name you never updated with the Social Security Administration after marriage or divorce.
- Reporting the amount that hit your bank as gross receipts.
- Filing one W-9 and expecting it to serve every marketplace. Each is a separate payer.
- Adding two overlapping forms together, when a marketplace 1099-K and a payment app 1099-K can describe the same sale twice.
Frequently asked questions
Why does Etsy or eBay need a W-9?
The marketplace settles buyer payments and pays you the balance, which makes it a third-party settlement organization under IRC 6050W. Reporting the gross it settled requires a certified name and taxpayer identification number. Most marketplaces block payouts until the tax information step is complete.
What is the 1099-K threshold now?
More than $20,000 in gross payments and more than 200 transactions. Both tests have to be met. The 2025 legislation restored the original statutory figures and did so retroactively, so this governs the 2025 tax year as well as 2026 onward.
My 1099-K is much bigger than what I banked. Is it wrong?
Almost certainly right. Box 1a reports the gross amount settled, unadjusted for marketplace fees, shipping labels, refunds, chargebacks or discounts. You start from the gross and deduct all of that on your own return, which is where the difference reappears.
I sold my old furniture at a loss. Do I owe tax on the 1099-K?
No tax is due on a loss, but do not ignore the form. A loss on personal-use property is not deductible, so the goal is to zero the amount out rather than claim anything. IRS guidance gives two routes: report the payment at the top of Schedule 1 and offset it, or report the sale on Form 8949, which carries to Schedule D. Keep whatever evidence you have of what you originally paid.
Does an EIN keep my SSN off marketplace records?
It does, and it costs nothing. A sole proprietor puts their own legal name on Line 1 and may use an EIN in Part I. Sellers listing on four or five marketplaces generally prefer this to spreading their Social Security number around.
I incorporated. Does that stop the 1099-K?
It does not. The corporate payee exception belongs to section 6041 and Forms 1099-NEC and 1099-MISC. Section 6050W has no equivalent, so a corporation that sells through a marketplace still receives a 1099-K once it passes both tests.
General information, not tax advice. This page explains a federal tax form in plain English. It is not legal, tax, or accounting advice, and W9Form.org is not affiliated with the IRS. Verify everything against the official Form W-9 page on IRS.gov and speak to a licensed professional about your own situation. How we source and review these pages.