Hobby or Business? What the IRS Looks At

The IRS decides using one basic question: was this activity entered into and carried on with a genuine intention to make a profit? If the answer is yes, you have a business, and a business loss can generally offset other income on your return. If the answer is no, you have an activity "not engaged in for profit" under Internal Revenue Code Section 183 — a hobby — and the tax consequences are lopsided. Hobby income is still fully taxable. The ordinary operating costs of the hobby are not deductible at all, not against the hobby's own income and not against anything else.

That one-way street is why the label matters much more than it used to. This page covers the federal test the IRS actually uses, the statutory presumption that can shift the burden in your favor, and the kind of evidence that shows a real profit motive. It is general information, not a substitute for advice from a CPA or enrolled agent who knows your specific numbers.

Why the hobby label costs more than it used to

Before 2018, someone whose sideline was reclassified as a hobby could still deduct hobby expenses as a miscellaneous itemized deduction, capped at the amount of hobby income, if they itemized and cleared a floor set as a percentage of their adjusted gross income. The 2017 tax law suspended miscellaneous itemized deductions, and legislation enacted in July 2025 (Public Law 119-21) removed the scheduled 2026 sunset, so the suspension in Section 67 now continues indefinitely rather than expiring.

The practical result under current law: the everyday operating expenses of a hobby — supplies, materials, advertising, booth fees, mileage — are not deductible, even up to the hobby's own income. A narrow category of items that are deductible whether or not you have a profit motive at all (certain taxes, for example) still follow their own separate rules; that carve-out is small and worth asking a preparer about rather than assuming. Hobby income itself is ordinary taxable income and gets reported as other income on Schedule 1 of Form 1040 — not on Schedule C, which is for a trade or business.

By contrast, if the activity qualifies as a business, ordinary and necessary business expenses are deductible on Schedule C (or on the business entity's own return), and a net loss can generally offset other income, subject to separate limits such as the at-risk, passive-activity, and excess-business-loss rules. Those limits have their own thresholds that change — check the current-year figures on irs.gov or with your CPA rather than assuming they don't reach you.

Congress can change any of this. Confirm the current treatment on irs.gov before you file.

The legal test: profit motive, not profit

The law does not require that you actually turn a profit. Plenty of legitimate businesses lose money, especially early on. What it requires is that you carried on the activity with an actual and honest intention of making a profit. You can lose money for years and still be a business if the facts show you were genuinely trying to make it work. You can also post occasional profits and still be treated as a hobby if the facts show the activity is really about a personal interest.

The nine factors the IRS weighs

Treasury Regulation 1.183-2(b) lays out nine factors that examiners and courts look at together. No single factor decides the case, not every factor has to point the same way, and the list is not exclusive — the regulation says all facts and circumstances count.

• The manner in which you carry on the activity. Do you keep complete, accurate books separate from your personal finances, and actually use them to make decisions?
• Your expertise or your advisors'. Do you or the people advising you have the knowledge to run this profitably, and did you study up where you lacked it?
• Time and effort expended. Do you put in the kind of time a person seriously trying to profit would — not necessarily full-time, but real and sustained?
• Expectation that assets will appreciate. Even if operations lose money year to year, do you expect the assets involved (land, breeding stock, inventory, equipment) to gain value in a way that could produce an overall profit?
• Your success in other activities. Have you taken similar ventures from unprofitable to profitable before?
• History of income or losses. Are the losses shrinking, or explainable by start-up costs, a bad year in the industry, weather, theft, or other circumstances beyond your control? Or do they simply continue with no change?
• The amount of occasional profits, if any. When you do profit, how large is it relative to the losses in other years and to your investment?
• Your financial status. Do you have substantial income from other sources — especially income the losses happen to offset? The regulation treats a lack of other income as pointing toward profit motive, which means the reverse can weigh against you.
• Elements of personal pleasure or recreation. Is there a strong recreational element? That alone doesn't disqualify you — the regulation says profit need not be the only motive, and plenty of real businesses grew out of something the owner loves — but it can tip the scale when the other factors point the wrong way.

The safe-harbor presumption

Section 183(d) gives you a statutory shortcut. If the activity's gross income exceeds its deductions in 3 or more of the 5 consecutive tax years ending with the year in question, the activity is presumed to be engaged in for profit, and the IRS carries the burden of establishing otherwise. For an activity consisting in major part of breeding, training, showing, or racing horses, the statute substitutes 2 profitable years out of 7.

Missing the safe harbor is not fatal. It just means you fall back on the nine-factor analysis instead of getting the automatic presumption — most Section 183 cases are decided that way. Meeting it isn't a guarantee either: it shifts a legal burden, it does not erase the underlying question, and the IRS can still take the position that the activity is a hobby.

There is also an election, made on Form 5213, to postpone the determination until after the fourth year (sixth, for horse activities) following the year you first engaged in the activity, so a new venture gets its full window to hit the profit years before anyone rules on it. There is a real trade-off: making the election extends the statutory period for assessing a deficiency attributable to the activity beyond the normal limit, so the IRS gets a longer runway to come back at those years. The filing window is limited. Read the current Form 5213 instructions on irs.gov and talk it through with a preparer before electing.

Building the record of a real business

Because the nine factors are largely about evidence, the best position is documentation you build as you go — not something you reconstruct after a notice arrives.

1. Run the money through a separate business account and card. Commingling personal and business funds is one of the clearest signals of "not businesslike."
2. Keep real books. A simple, consistently updated ledger or accounting software beats a shoebox of receipts. The point is that you can use the numbers to manage the activity, not just produce them when asked.
3. Write a business plan, even a short one, and update it. A plan that projects a path to profit, and that you revisit, is evidence of intent.
4. Market the activity. A website, cards, local advertising, a business social media presence — anything showing you are trying to attract paying customers.
5. Record what you change when something isn't working. Raised prices, dropped an unprofitable line, switched suppliers, added hours, took a class to fix a weak spot. Write these decisions down when you make them; they speak directly to several of the nine factors.
6. Watch the loss pattern against your other income. Years of Schedule C losses that consistently offset substantial W-2 wages, with no sign of narrowing, is the pattern the financial-status factor is aimed at. That is not a reason to skip claiming a real loss — it is a reason to make sure the file behind it can survive a look.
7. Get expertise where you're missing it, and document it — courses, certifications, time with someone experienced in the field, industry publications you follow.

If the IRS reclassifies you

If an examiner determines the activity is a hobby, expect the deductions for the years at issue to be disallowed, back tax on the resulting increase, interest, and potentially accuracy-related penalties. You still report and pay tax on the income either way — that part never changes. If you are facing an active hobby-loss examination, this is the point to bring in a CPA, an enrolled agent, or a tax attorney rather than argue the nine factors alone. The IRS also publishes its own examiner guidance on activities not engaged in for profit at irs.gov, and free help is available through the IRS, SBA, SCORE, and your state's Small Business Development Center.

A quick word on structure

The hobby-versus-business question is separate from whether you formed an LLC or got an EIN. Entity choice affects liability, and an LLC has no tax classification of its own — a single-member LLC is a disregarded entity reporting on Schedule C by default. Forming one does not by itself prove profit motive, and a sole proprietor with excellent records can out-document an LLC with a shoebox of receipts.

Related reading

If you are building the habits above, our guides on quarterly estimated taxes for the self-employed and on separating business and personal finances go deeper on the mechanics. If a string of loss years has left you underwater on business debt, we cover business bankruptcy separately.

This article is general information, not legal, tax, or financial advice, and does not create an attorney-client or accountant-client relationship. For a determination specific to your activity, talk to a CPA, enrolled agent, or tax attorney, and confirm current rules, figures, and forms at irs.gov.