The IRS treats an activity as a business if you run it to make a profit and as a hobby if you do it mainly for enjoyment. There's no single test: the IRS weighs factors such as whether you keep complete and accurate books, how much time you put in, whether you rely on the income and whether you change things to make money.
This question usually comes up the moment a pastime starts paying. You sell a few paintings, your candles go down well at a craft fair, or your weekend photography gets booked. Is that a hobby with some cash, or a small business? The IRS has a clear way of looking at it, even if the answer depends on your situation.
The core difference
In the IRS's own words, businesses operate to make a profit, while hobbies are for pleasure or recreation. The two are treated differently on your tax return, which is why it matters which side you're on. But no single fact decides it. The IRS says you need to look at all the factors together, and that none counts for more than another.
The IRS checklist
| IRS factor | Points to a business | Points to a hobby |
|---|---|---|
| How you run it | Businesslike, with complete and accurate books and records | Casual, no records |
| Time and effort | Work that shows you intend to make a profit | Occasional, when you feel like it |
| Reliance on the income | You depend on it for your livelihood | You have plenty of other income to fund it |
| Motive | Profit | General enjoyment or relaxation |
| Losses | Normal for a startup phase or beyond your control | Ongoing, with no plan to change |
| Changes | You change methods to improve profitability | You carry on the same way |
| Know-how | You and your advisers have the knowledge to run it as a business | Learning for fun |
| Track record | Profit in some years, or in similar past ventures | No profit history |
| Assets | You expect profit from assets used rising in value | Not a consideration |
Where hobby income goes on your return
A hobby isn't tax-free. The IRS says income from an activity carried on with no intention of making a profit is reported on Schedule 1 of Form 1040, line 8. So the hobby label changes how the money is treated, not whether you report it. And profits from selling goods, including personal items, and services are taxable income.
The outdated 600 dollar line
Here's a catch worth knowing. One IRS side-hustle tip still says anyone accepting more than 600 dollars through online platforms or payment apps could receive a Form 1099-K. That reflected the rule at the time. The One Big Beautiful Bill later restored the 1099-K threshold to over 20,000 dollars and more than 200 transactions, retroactively. So don't treat 600 dollars as the line between hobby and business. It was never that, and it isn't the federal form threshold any more either.
How to tell which you have: five honest questions
- Would I keep doing this if it never made money? If yes, it leans hobby.
- Do I track income and costs as if I'd have to show a bank? If yes, it leans business.
- Have I changed prices, products or marketing to make more money? If yes, it leans business.
- Do I need this income to pay bills? If yes, it leans business.
- Has it made a profit in some years, or am I working towards that with a plan? If yes, it leans business.
If it's becoming a business
You don't have to wait for a big year to act like a business. The IRS puts businesslike conduct and good records at the top of its list. Open a separate account for the money, keep receipts, write down your prices and what you spend on materials and marketing, and note any changes you make to improve profit. That paperwork is the evidence of profit motive if you're ever asked, and it makes filing far easier.
Common examples
| Situation | Likely leans |
|---|---|
| You sell a few of your own paintings to friends each year | Hobby |
| You run an online shop, track costs and adjust prices | Business |
| You do wedding photography most weekends with a booking system | Business |
| You knit for fun and sometimes sell at a fair | Hobby |
These are my illustrations of how the IRS factors play out, not rulings. Real cases depend on all the facts.
My verdict
If you're making money and you'd like to make more, behave like a business from day one: records, a separate account and a plan. If it's purely for joy, that's fine too, but still report the income. When in doubt, a session with a tax professional is cheap next to getting it wrong. For the business side, see the tax side of an LLC, my freelancer tips and ways to save on business tax.
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Frequently asked questions
How does the IRS decide if something is a hobby or a business?
It looks at all the facts, including whether you run it in a businesslike way with good records, the time you put in, whether you rely on the income, whether you change methods to improve profit and your profit history. No single factor decides.
Is hobby income taxable?
Yes. The IRS says income from an activity carried on without a profit motive is reported on Schedule 1 of Form 1040, line 8.
Is 600 dollars the line between a hobby and a business?
No. That figure came from an older 1099-K rule. The federal 1099-K threshold is now over 20,000 dollars and more than 200 transactions, and it was never a test for hobby or business.
Does making a loss mean it's a hobby?
Not on its own. The IRS says losses that are normal for a startup phase or beyond your control don't rule out a business.
What records should I keep?
The IRS lists complete and accurate books and records as a sign of a business. Keep income, costs, receipts and notes on changes you make to improve profit.
