Side Hustle Tax: When a Hobby Becomes a Business
The line between a hobby and a business — and what crossing it means for your tax
It usually starts small. A few candles sold to friends. A weekend market stall. Some freelance design on the side. Then one month the side hustle quietly out-earns the hobby it used to be — and a question you've been ignoring suddenly matters: is the ATO expecting me to declare this?
The answer hinges on a single distinction — hobby versus business — and getting it right protects you from both an unexpected tax bill and the stress of wondering.
General information only, not personal tax advice. Verify the hobby/business indicators and registration rules with the ATO (ato.gov.au) or a registered tax agent.
Hobby or business? It's not about how much you enjoy it
A hobby is something you do for pleasure or recreation. Income from a genuine hobby generally isn't assessable, and you can't claim the costs as deductions either. A business is carried on in a businesslike, repeatable way with the intention of making a profit — and its income is assessable (with deductions available against it).
The ATO doesn't look at one thing; it weighs several indicators together.
The factors that decide it
- Intention to make a profit. Are you genuinely trying to turn a profit, or just covering costs of something you love?
- Repetition and regularity. One-off sales look like a hobby; regular, ongoing activity looks like a business.
- Scale and organisation. Do you keep records, advertise, have a business name, invoice customers, plan?
- Commercial character. Are you operating the way others in that industry operate?
- Size of the activity. Bigger, growing turnover points toward a business.
No single factor is decisive — it's the overall picture. A growing Etsy shop with regular sales, marketing and a profit motive is almost certainly a business, even if it started as a hobby.
What changes when you cross the line
- You declare the income in your tax return — and you can now claim deductions for the costs of earning it (materials, fees, equipment, a portion of phone/internet).
- You may need an ABN. A business is entitled to one, and many platforms/clients require it.
- GST if you grow. Once turnover hits $75,000 you must register for GST (rideshare from dollar one).
- Record-keeping. You'll need to keep records of income and expenses like any business.
Remember: a side hustle's income is taxed on top of your salary, at your marginal rate — so it can push into a higher bracket. Setting money aside as you earn avoids a tax-time surprise.
A quick example
Maya makes jewellery. Year one: a few pieces for friends, no advertising, no profit motive — a hobby. Year two: an Etsy store, regular weekly sales, Instagram marketing, $14,000 in revenue and a clear profit goal. That's now a business: Maya declares the income, claims her materials, tools, fees and a share of her phone, and keeps records. She's well under $75k, so no GST yet — but she's watching the threshold.
How TaxBot helps
The moment your hobby becomes a business, record-keeping matters. TaxBot tracks your side-hustle income and scans your expense receipts, so you can see your real profit, claim every cost, and know exactly what to set aside for tax — without it eating your evenings.
The takeaway
If your side hustle is regular, organised and aimed at profit, treat it as a business — declare the income, claim the deductions, and keep records. It's less scary than ignoring it, and you'll usually keep more of what you earn.