The Question You Didn't Know You Needed to Answer
You started making candles in your kitchen. Then a friend bought one. Then a stranger on Instagram bought three. Now you're spending weekends pouring wax and you've made $4,000 this year. Congratulations — you might have a business. Or you might have a hobby. And the IRS cares about the difference more than you'd expect.
This isn't something to panic about. The rules are straightforward, and for most people who are actively selling things and trying to make money, you're already on the right side of the line. But understanding where that line is helps you make smart decisions about how you run things — and how you handle your taxes.
Why the Distinction Matters
The hobby vs. business distinction comes down to one thing: deductions.
If the IRS considers your activity a business, you can deduct your expenses — materials, shipping, equipment, software, market booth fees, mileage, home office space — against your income. If you made $8,000 and spent $5,000 on supplies and expenses, you pay taxes on $3,000. That's a significant tax savings.
If the IRS considers your activity a hobby, you report the income but you can't deduct expenses against it. Under current tax law (post-2017 Tax Cuts and Jobs Act), hobby expenses aren't deductible at all. So if you made that same $8,000, you owe taxes on all $8,000 — even though you spent $5,000 to earn it.
That's a big difference. On $8,000 of hobby income, you could owe over $2,000 more in taxes than you would if it were classified as business income. And you'd still have to report every dollar of income either way.
The 9 Factors the IRS Uses
The IRS doesn't have a single bright-line test for hobby vs. business. Instead, they look at nine factors from their guidelines (found in IRS Publication 535 and Tax Code Section 183). No single factor is decisive — they look at the overall picture.
1. Do You Carry On the Activity in a Businesslike Manner?
This means: do you keep records? Do you track income and expenses? Do you have a system for invoicing customers? Do you maintain a separate bank account? The more your operation looks like an organized business — even a small one — the stronger your case. A shoebox full of crumpled receipts doesn't help. A spreadsheet of every sale and expense does.
2. Does the Time and Effort You Put In Indicate an Intent to Make a Profit?
The IRS wants to know whether you're putting in real work toward profitability, or just dabbling. Working on your business regularly — even if it's nights and weekends — shows intent. Spending time on marketing, product development, and customer outreach all count here.
3. Do You Depend on the Income for Your Livelihood?
If this income is something you rely on — even partially — to pay bills or support yourself, that points toward business. This factor is less about the amount and more about the role the income plays in your life. Even if it's supplemental, if you're counting on it, that matters.
4. Are Your Losses Due to Circumstances Beyond Your Control (or Are They Normal for a Startup)?
New businesses lose money. That's expected. The IRS recognizes that startups often operate at a loss for the first few years. Losses in years one through three are completely normal and do not automatically make you a hobby. But if you've been doing this for eight years and have never turned a profit or changed your approach, that's a red flag.
5. Have You Changed Methods to Improve Profitability?
When something isn't working, do you adjust? Raising prices, cutting costs, trying new sales channels, dropping unprofitable products — these are all signs of a business mindset. A hobbyist does the same thing year after year regardless of results. A business owner adapts.
6. Do You (or Your Advisors) Have Knowledge and Expertise?
Have you taken any steps to learn about your craft, your market, or running a business? This could be formal education, workshops, mentorship, or just doing research. You don't need an MBA. Watching YouTube tutorials about pricing strategy or reading articles about small business taxes counts.
7. Have You Made a Profit in Similar Activities in the Past?
If you've run a profitable business before — even a different type of business — that demonstrates you understand how to turn a profit. This factor is more relevant for serial entrepreneurs but can help anyone with prior business experience.
8. Does the Activity Make a Profit in Some Years?
There's a common rule of thumb: if you show a profit in three out of five consecutive years, the IRS presumes you're a business. This isn't an absolute rule — it's a presumption that can be overridden by other factors — but it's a useful benchmark. If you're profitable most years, you're in strong shape.
9. Can You Expect to Make a Future Profit From the Appreciation of Assets?
This factor is more relevant for activities like horse breeding or real estate than for product-based small businesses. But if your business involves assets that are appreciating in value (equipment, inventory, intellectual property), it can work in your favor.
What Happens If the IRS Says You're a Hobby
If the IRS audits you and reclassifies your business as a hobby, a few things happen:
- You lose all the business expense deductions you claimed
- You owe back taxes on the full income amount, plus interest
- You may owe penalties for underpayment
- You'll need to amend prior tax returns
This sounds scary, but audits for hobby classification are relatively uncommon for small filers. The IRS tends to look more closely at activities that report large, consistent losses — because those losses reduce your taxable income from other sources (like a day job). If you're reporting $3,000 in income and $2,500 in expenses, you're not high on anyone's audit list.
That said, it's still worth protecting yourself. And the good news is that protection is mostly just good business practice.
Practical Steps to Prove You're a Business
You don't need to incorporate, hire employees, or rent office space. Here's what actually matters:
Keep detailed records. Track every sale and every expense. Use a spreadsheet, an accounting app, or invoicing software. Date everything. Save receipts. The single biggest thing that separates a hobby from a business in the IRS's eyes is whether you kept records like a business.
Open a separate bank account. It doesn't need to be a formal business account. A separate personal checking account that you use only for business transactions works. This creates a clean paper trail and shows you're treating business money differently from personal money.
Use invoices. Even if you sell at a farmers market and get paid in cash, create an invoice or sales record for each transaction. This shows professionalism and creates the documentation the IRS likes to see.
Write a simple business plan. It doesn't have to be formal. A one-page document that says "I sell handmade candles. My goal is to earn $10,000 this year. Here's how I plan to do it." This demonstrates intent to profit.
Get a business license if your city requires one. Many cities and counties require a business license for anyone selling goods. It usually costs $25-75 and takes 15 minutes to apply. Having one is a clear indicator that you're operating as a business.
Report your income honestly. File a Schedule C with your tax return. Report all your income and all your legitimate expenses. Showing the IRS that you're playing by the rules and documenting everything goes a long way.
The Bottom Line
If you're regularly selling products, tracking your money, trying to make a profit, and treating what you do like a business — you're probably running a business. The IRS isn't trying to catch people who sell $6,000 worth of handmade soap. They're looking for people who claim $40,000 in "business losses" from an activity that's clearly recreational.
Do the basics: keep records, separate your finances, invoice your customers, and file your taxes correctly. That puts you in a strong position no matter what. And if you're worried about your specific situation, a one-time consultation with a tax professional (usually $100-200) can give you clarity and peace of mind.