What Is Considered a Hobby for Tax Purposes: IRS Nine-Factor Test

For federal tax purposes, an activity is a hobby when you don’t carry it on with a genuine intent to make money. That’s the standard set by Internal Revenue Code Section 183, and it’s what separates a hobby from a trade or business no matter how much revenue the activity generates. What is considered a hobby for tax purposes matters because the classification changes everything downstream: hobby income is fully taxable, hobby expenses are not deductible at all, and misclassifying a hobby as a business can expose you to back taxes, interest, and a 20% accuracy-related penalty.¹

The Profit Motive Is the Test

The legal question is whether you carry on the activity with an actual, honest intent to earn a profit. Your expectation doesn’t have to be reasonable, and you don’t have to succeed every year. What matters is that financial gain is your dominant purpose, not personal enjoyment, relaxation, or recreation.

Enjoying what you do doesn’t disqualify you. Plenty of profitable businesses involve work their owners love. The IRS is asking whether enjoyment drives the activity or is a byproduct of a real commercial effort. Courts have held that the profit motive must be dominant, though it doesn’t have to be the only motive.²

The Nine Factors the IRS Weighs

Treasury Regulation Section 1.183-2(b) sets out nine factors used to evaluate profit motive. No single factor decides the outcome, and the IRS doesn’t just count them. All facts and circumstances are weighed together.²

How you run the activity. Accurate books, a separate bank account, and methods similar to profitable businesses in your field all point toward a profit motive. Changing your approach after losses to improve profitability counts here too.
Your expertise or your advisors’. Studying accepted business practices before starting, consulting industry experts, and following their advice suggests you’re serious. Ignoring guidance after seeking it out cuts the other way.
Time and effort invested. Substantial personal time, especially time that isn’t recreational, signals business intent. Hiring qualified people to run things can substitute for your own hours.
Whether assets may appreciate. If land, equipment, or other property used in the activity is expected to gain value, potential appreciation factors into the overall profit picture even when annual operations run at a loss.
Your track record. Past success turning a profit in similar activities suggests you know how to make this one work.
History of income and losses. Repeated losses beyond a reasonable startup phase point toward hobby status. Occasional profitable years that are large relative to the losses strengthen the business argument.
Size of occasional profits. A small annual profit compared to the value of assets invested may suggest the activity isn’t truly profit-driven.
Your other income sources. A high-paying job or substantial investment income funding a loss-generating activity can suggest the activity exists to create tax deductions rather than profit.
Personal pleasure or recreation. The more inherently fun the activity, the more closely the IRS scrutinizes it. Enjoyment alone, however, doesn’t make something a hobby.

The first factor is the one that trips most people up. Running your activity in a businesslike manner is the most controllable item on the list, and it’s the one auditors focus on first. Without organized financial records, a written plan, or documentation of steps taken toward profitability, the remaining factors fight uphill.³

The Three-Out-of-Five-Year Safe Harbor

Section 183(d) provides a shortcut. If your activity produces a gross profit in at least three of the last five consecutive tax years, it’s presumed to be a business. For activities primarily involving breeding, training, showing, or racing horses, the threshold is two profitable years out of seven. Meeting the safe harbor shifts the burden of proof to the IRS, meaning the agency has to affirmatively prove you’re running a hobby.¹

Falling short of the safe harbor doesn’t automatically make your activity a hobby. It just means you don’t get the favorable presumption, and the nine-factor analysis applies in full. Plenty of legitimate businesses take several years to turn a profit. If you’ve recently started an activity and haven’t hit the safe harbor yet, Form 5213 lets you ask the IRS to postpone its determination until the end of the five-year (or seven-year) presumption period, though filing it extends the statute of limitations for assessing tax on the activity.⁴

How Hobby Income and Expenses Are Taxed

All hobby income goes on Schedule 1 (Form 1040), line 8, as other income. It doesn’t matter whether you received a Form 1099. Unlike Schedule C business income, hobby income isn’t subject to self-employment tax, but it also doesn’t allow any deduction for related expenses.³

Before 2018, hobbyists could deduct expenses as miscellaneous itemized deductions on Schedule A, up to the amount of hobby income and subject to a 2% adjusted gross income floor. The Tax Cuts and Jobs Act eliminated all miscellaneous itemized deductions starting in 2018. The 2025 reconciliation legislation made that elimination permanent. For 2026 and every year after, hobby expenses are completely nondeductible. You pay tax on every dollar of hobby income with no offset for materials, travel, equipment, or any other cost you incurred to earn it.

A concrete example: if you sell handmade pottery as a hobby and bring in $5,000 during the year but spent $3,500 on clay, glazes, kiln costs, and booth fees, you owe income tax on the full $5,000. Those $3,500 in expenses disappear. The same potter operating as a legitimate business would report both figures on Schedule C and pay tax only on the $1,500 net profit.⁵

The Self-Employment Tax Angle

Hobby classification does have one upside. Hobby income isn’t subject to self-employment tax. Sole proprietors reporting more than $400 in net earnings on Schedule C owe a combined 15.3% self-employment tax covering Social Security and Medicare, on top of regular income tax. Hobby income on Schedule 1 avoids that.⁶

The math rarely favors the hobbyist though. Using the pottery numbers, the business owner would owe self-employment tax on $1,500 of net profit (roughly $230), while the hobbyist pays income tax on the full $5,000 with zero deductions. When expenses are meaningful relative to income, business classification almost always produces a lower total tax bill.

1099-K Reporting for Online Sellers

If you sell through platforms like Etsy, eBay, or PayPal, you may receive a Form 1099-K reporting your gross payment volume. Under the threshold reinstated by the One, Big, Beautiful Bill, payment processors are required to issue a 1099-K only when your gross transactions exceed $20,000 and the number of individual transactions exceeds 200 in a calendar year.⁷

Falling under those thresholds doesn’t make the income tax-free. You owe tax on every dollar of hobby income whether or not a 1099-K arrives. If a 1099-K you receive includes personal transactions such as selling used furniture at a loss, you’ll need to reconcile that on your return so you don’t pay tax on amounts that aren’t income.

What Happens If the IRS Reclassifies You

The IRS watches for patterns suggesting someone is using hobby losses to offset other income. Schedule C losses reported year after year, especially from activities with obvious recreational appeal like horse farming, art dealing, or charter fishing, draw scrutiny. When the IRS reclassifies a business as a hobby, the fallout goes well beyond the current year.

Reclassification typically means the IRS disallows business expense deductions for every open tax year, which under the standard statute of limitations covers the prior three years. You’ll owe back taxes on the full hobby income for each affected year, plus interest running from each original due date. The IRS can also impose a 20% accuracy-related penalty on the underpayment if it finds negligence or a substantial understatement of income tax.⁸

Documentation is your defense. Records that speak directly to the nine factors, such as a written business plan, organized books, evidence of market research or professional development, and a record of the changes you made after loss years, are what stand between you and reclassification in an audit.

Rental Property Falls Under the Same Rules

The hobby loss rules apply to rental activity too. If you rent out a vacation home or other property without a genuine profit motive, the IRS treats the rental the same way as other hobby income: gross receipts go on Schedule 1, line 8j, and rental expenses can’t be deducted against that income. The three-of-five-year safe harbor applies, and Form 5213 is available to postpone the determination.⁹

One narrow exception applies. If you itemize, you can still claim mortgage interest (on a primary or secondary residence), real estate taxes, and casualty losses from the property on Schedule A. Those deductions are allowed because they’re available to homeowners generally, not because the rental is treated as a business.⁹

1
Office of the Law Revision Counsel. 26 USC 183 – Activities Not Engaged in for Profit
2
eCFR. 26 CFR 1.183-2 – Activity Not Engaged in for Profit Defined
3
Internal Revenue Service. Here’s How to Tell the Difference Between a Hobby and a Business for Tax Purposes
4
Internal Revenue Service. Election to Postpone Determination as to Whether the Presumption Applies That an Activity Is Engaged in for Profit
5
Internal Revenue Service. About Schedule C (Form 1040), Profit or Loss From Business (Sole Proprietorship)
6
Internal Revenue Service – IRS.gov. Schedule C and Schedule SE 1
7
Internal Revenue Service. IRS Issues FAQs on Form 1099-K Threshold Under the One, Big, Beautiful Bill
8
Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments
9
Internal Revenue Service. Publication 527 (2025), Residential Rental Property