How to Report Hobby Income: Steps, Forms, and Withholding

Report hobby income on Schedule 1 (Form 1040), Part I, Line 8j, labeled “Activity not engaged in for profit income.”1IRS.gov. 2025 Schedule 1 (Form 1040) The total from Schedule 1 then carries to Line 8 of your Form 1040, where it joins your other income for the year.2Internal Revenue Service. About Form 1040, U.S. Individual Income Tax Return You owe regular federal income tax on the full amount, and you cannot deduct any expenses you incurred to earn it.3Internal Revenue Service. Publication 17 (2025), Your Federal Income Tax

The Three Steps to Report It

The mechanics are straightforward once your records are in order.

  • Add up every payment you received from the activity during the year. That gross figure is what you report. Do not subtract supplies, equipment, mileage, fees, or any other cost, because hobby expenses are no longer deductible.3Internal Revenue Service. Publication 17 (2025), Your Federal Income Tax
  • Enter that gross amount on Schedule 1, Part I, Line 8j.1IRS.gov. 2025 Schedule 1 (Form 1040)
  • Let the Schedule 1 additional-income total flow to Form 1040, Line 8. From there it combines with wages and other income to produce your total income.

Tax software will place the entry on Line 8j once you identify the payment as hobby income rather than self-employment. Because hobby income is not self-employment earnings, it doesn’t go on Schedule C and doesn’t trigger Schedule SE or self-employment tax.4IRS.gov. 2025 Instructions for Schedule SE (Form 1040)

What Counts as Income and What Paperwork to Expect

Your gross hobby income is every dollar the activity brought in, whether it arrived by cash, check, card, or a payment app. Depending on how buyers paid you, one or both of these forms may show up in the mail or in your online account:

The IRS gets copies of both. Your Line 8j entry should reconcile with any amounts reported on those forms; a mismatch is one of the most common reasons the IRS sends a notice. You still have to report the income if you never receive a 1099, because payments below the reporting thresholds are taxable too.

Keep the underlying documentation — bank statements, payment app histories, ledgers, receipts from buyers — for at least three years from the date you file. If you understate income by more than 25 percent of the gross shown on the return, the IRS can look back six years. If you never file, there is no cutoff.8Internal Revenue Service – IRS.gov. How Long Should I Keep Records

Make Sure It Actually Is a Hobby

Line 8j is the right place only if the activity is genuinely not for profit. If you are running what looks like a business — even a small side operation — it belongs on Schedule C, and it comes with different rules (deductible expenses, and self-employment tax on net earnings of $400 or more).4IRS.gov. 2025 Instructions for Schedule SE (Form 1040) Getting this wrong in either direction can cost you.

Under Internal Revenue Code Section 183, the IRS weighs nine factors together to decide whether an activity is carried on for profit, including how businesslike your recordkeeping is, how much time you put in, whether you depend on the income, whether you adjust your methods to improve profitability, your expertise, your profit history, and whether assets used in the activity are appreciating.9Internal Revenue Service – IRS.gov. Income and Expenses No single factor decides the question. As a safe harbor, the IRS presumes an activity is for profit if it turns a profit in at least three of the last five tax years.10Office of the Law Revision Counsel. 26 U.S. Code 183 – Activities Not Engaged in for Profit

The practical stakes are large. A business can deduct ordinary and necessary expenses against its revenue; a hobby cannot deduct anything. Historically, hobby expenses were allowed as miscellaneous itemized deductions up to the amount of hobby income, but federal law eliminated miscellaneous itemized deductions starting in 2018, and that elimination has been made permanent.10Office of the Law Revision Counsel. 26 U.S. Code 183 – Activities Not Engaged in for Profit3Internal Revenue Service. Publication 17 (2025), Your Federal Income Tax Every dollar of hobby revenue is taxed with no offset for what you spent.

Paying Tax on the Income During the Year

Because no one is withholding tax from your hobby earnings, a larger amount reported on Line 8j can leave you underpaid at year end. The IRS generally requires estimated tax payments when you expect to owe $1,000 or more after subtracting withholding and credits.11Internal Revenue Service – IRS.gov. Estimated Taxes

You calculate and send estimated payments with Form 1040-ES on a quarterly schedule (roughly April, June, September, and January of the following year).12Internal Revenue Service. About Form 1040-ES, Estimated Tax for Individuals If you also have a W-2 job, you can instead file a new Form W-4 asking your employer to withhold additional tax from your paycheck, which spares you the quarterly filings.

To sidestep an underpayment penalty, pay in at least the lesser of 90 percent of your current-year tax or 100 percent of last year’s tax through withholding and estimated payments combined.11Internal Revenue Service – IRS.gov. Estimated Taxes The IRS charges 7 percent annual interest, compounded daily, on underpayments as of early 2026.13Internal Revenue Service. Interest Rates Remain the Same for the First Quarter of 2026

What Goes Wrong and What It Costs

Two mistakes account for most of the trouble. The first is not reporting hobby income at all, usually because no 1099 arrived. The IRS still gets 1099s that do get issued, and matching software flags returns that come in lower than the third-party reports. The second is reporting hobby activity on Schedule C to claim expenses and a net loss. If the IRS reclassifies the activity, the deductions disappear and you owe tax on the difference.

On top of the tax and interest, the accuracy-related penalty for negligence or disregard of the rules is 20 percent of the underpayment.14Office of the Law Revision Counsel. 26 U.S. Code 6662 – Imposition of Accuracy-Related Penalty on Underpayments Reporting business income as hobby income cuts the other way: you would miss legitimate deductions and might skip self-employment tax that was actually owed, which can also draw an inquiry.

Match the number on Line 8j to your records and to any 1099s the IRS already has, keep the paperwork behind it, and pay in through the year if the income is large enough to move your tax bill. That is the whole job.