You Got a 1099-K. Here Is What to Do Next

First, do not panic: a 1099-K is an information return, not a bill. It reports the gross payments a marketplace sent you, and a copy went to the IRS, but it says nothing about what you owe. What you owe depends on your profit after costs, which is almost always far below the gross figure on the form. Here is how to go from the number on the paper to the number on your return. To gauge whether your selling reads as a business and to sketch the tax, run the 1099-K Checker on this site as you work through the steps.

Step 1: read the number for what it is

The dollar figure in Box 1a is GROSS payments for the year, before a single cost comes out. That gross can include platform fees, the shipping the buyer paid, refunds you later issued, and sales tax the platform collected and remitted for you. None of that is profit. So the very first mental move is to stop treating the 1099-K total as income. It is the top of the funnel, and your taxable profit is what is left at the bottom.

Step 2: check whether it should have come at all

A form is issued when your activity crosses a reporting threshold, and that threshold has moved several times in recent years. For 2026 the federal threshold is $20,000 and 200 transactions (both must be met), restored by the One Big Beautiful Bill Act. Two cautions: several states set their own, lower thresholds, so you can receive a form well under the federal figure; and the threshold governs the FORM, not the tax. Income you earned is reportable whether or not a form was sent. If the form looks wrong, for example it double-counts or belongs to someone else, contact the issuer for a correction rather than ignoring it.

Step 3: reconcile the gross against your own records

This is the step that saves money. Pull your own sales records for the year and reconcile them to the gross on the form, then list what comes out of that gross to reach profit: what you paid for the inventory (your cost basis), platform and payment fees, shipping labels you bought, refunds, and other selling costs. The gap between the gross and your profit is exactly the set of deductions you are entitled to take, and the reconciliation is your evidence for them. Keep it with your tax file.

Step 4: put it in the right place on the return

Where the income lands depends on what kind of selling it was, which is the one distinction that changes everything downstream:

A business. If you are selling to make a profit, with regularity and effort, it goes on Schedule C: gross receipts on top, your reconciled costs as expenses, and the net profit flows to your 1040 and to Schedule SE for self-employment tax. Which side of the line you are on is a facts-and-circumstances test, covered in hobby or business.
Personal items. If you were clearing out your own closet or garage rather than running a business, the rules are different, and there is a specific way to report items sold at a loss so you are not taxed on money that was never income. See 1099-K for personal items sold at a loss.

Where this fits

This page is the "now what" after a form arrives. To check whether your numbers even cross a reporting threshold and to estimate self-employment tax on a business profit, use the 1099-K Checker. To settle the business-or-hobby question that decides how you report, read hobby or business, and for the year-by-year threshold history, the 2026 1099-K threshold explained. Figures on this page verified 2026-07-22.

1099-K questions, answered

Is a 1099-K a tax bill?: No. A Form 1099-K is an information return, not a bill. It reports the gross payments a marketplace or processor sent you during the year, and a copy goes to the IRS. It does not tell you what you owe; your tax depends on your actual profit after costs, which is almost always far less than the gross number on the form.
Why is the number on my 1099-K higher than what I made?: Because the 1099-K reports GROSS payments, before anything is taken out. Platform fees, shipping the buyer paid that went to the label, refunds you issued, and sales tax the platform collected can all be baked into that gross figure. Your job at tax time is to start from the gross and subtract your real costs to get to the profit that is actually taxable.
Do I still report the income if I did not get a 1099-K?: Yes. The reporting threshold decides whether a FORM is issued, not whether income is taxable. For 2026 the federal threshold is $20,000 and 200 transactions, but taxable income is taxable whether or not a form was sent, and several states set lower thresholds. If your selling is a business, report it regardless of any form.
Where does the 1099-K income go on my return?: If your selling is a business, the income and your deductible costs go on Schedule C, and the net profit flows to your 1040 and to Schedule SE for self-employment tax. If you were selling personal items, the treatment is different and there is a specific way to report items sold at a loss so you are not taxed on money that was never income. Use the checker to gauge which bucket you are in, and see the linked guide on personal items sold at a loss.