Accuracy matters for compliance, cash flow and avoiding surprise tax bills. "Self-employment tax" is also a loose phrase here. Australia has no single separate tax. You may deal with income tax, the Medicare levy, PAYG instalments, GST and superannuation.
The process: confirm your status, gather records, calculate your business result, claim deductions, lodge the right return, then pay or arrange what's owed.
Key Takeaways
- Most sole traders report business income on their individual tax return.
- Taxable business income is assessable income minus eligible, substantiated deductions.
- GST, PAYG instalments and super may add obligations depending on your circumstances.
- Check current ATO thresholds and deadlines for your income year before lodging.
What Are Self-Employment Taxes in Australia?
A self-employed person runs their own business: a sole trader, independent contractor, freelancer or gig worker. As a sole trader, you own the business, carry its debts and losses, and report its income under your own tax file number (TFN).
You must lodge an individual return even if income is below the tax-free threshold.
The obligations that may apply
- Income tax: resident marginal rates on your taxable income
- Medicare levy: generally 2%, with low-income reductions
- PAYG (Pay As You Go) instalments: prepayments toward your tax, if ATO criteria are met
- GST: required once GST turnover reaches $75,000 (ride-sourcing has a special rule: register regardless of turnover)
- Super: you don't need to pay super guarantee for yourself, but personal contributions may be deductible
Employee, contractor or business operator?
Classification depends on the whole working arrangement, not a contract label. An Australian Business Number (ABN) or issuing invoices alone doesn't make you a contractor, as the Fair Work Ombudsman explains. Getting it wrong can expose the engaging business to PAYG withholding liabilities, super guarantee charges and penalties.
Structures and personal services income
Sole traders report on their individual return. Companies, partnerships and trusts have separate or additional reporting. If your income is mainly a reward for your personal skills or effort, personal services income rules may apply, and that income is reported separately in your return.
How to File Self-Employment Taxes in Australia: Step by Step
The path runs from confirming your structure, to organising records, to calculating the result, completing the return and lodging.
Step 1: Confirm your business status and tax obligations
Check whether you're a sole trader, contractor, partner or actually an employee. Then confirm:
- You hold an ABN and TFN
- Whether your GST turnover (current or projected over 12 months) reaches $75,000
- Whether PAYG instalments apply
- Whether personal services income rules affect you
Step 2: Gather income records
Collect invoices, sales reports, platform statements, bank and card records, payment summaries and contract records. Include cash and barter income, which counts at market value. Reconcile everything against your own books, because client or platform figures can differ from yours.
Records should show date, amount, description and purpose, and generally be kept for 5 years.
Step 3: Organise and substantiate business expenses
Separate business costs from private and mixed-use ones. Keep receipts, invoices, travel logs, asset records and finance documents. An expense must relate to earning business income, be apportioned for private use, and be backed by records.
Step 4: Calculate the business result
Total your assessable business income (excluding GST), subtract eligible deductions, and arrive at net income or loss. Special treatment can apply to:
- Depreciation and instant asset write-off: eligible small businesses (turnover under $10 million) can immediately deduct assets costing under $20,000 for 2025-26 and from 1 July 2026
- Trading stock
- Home-based work
- Motor vehicle use
- Personal services income
Step 5: Complete and lodge your individual return
For the 2025-26 income year, complete the Business and professional items schedule, using P8 for business income and expenses. The net result goes to item 15 of the supplementary section. Personal services income is reported separately at question 14.
You can lodge through myTax where eligible. Use a registered tax agent for returns with complex business, investment or international matters.
Step 6: Review, submit and pay
Check the return against your records, keep your working papers, submit, then review your notice of assessment. Any balance is paid, refunded or factored into future PAYG instalments. Confirm current payment methods and due dates on the ATO website.
How to Calculate, Pay and Manage Your Tax
Start with business income, subtract deductions, add other assessable income, apply offsets and arrive at your liability.
2025-26 resident tax rates
| Taxable income | Tax on this income |
|---|---|
| $0-$18,200 | Nil |
| $18,201-$45,000 | 16 cents per $1 over $18,200 |
| $45,001-$135,000 | $4,288 plus 30 cents per $1 over $45,000 |
| $135,001-$190,000 | $31,288 plus 37 cents per $1 over $135,000 |
| $190,001 and over | $51,638 plus 45 cents per $1 over $190,000 |
These figures come from the ATO rates table. For 2026-27, the rate on $18,201 to $45,000 drops to 15 cents. The Medicare levy is generally 2%. For 2025-26, reduced rates apply at or below $35,013 (a higher threshold applies if you qualify for the seniors and pensioners tax offset).
PAYG instalments and GST
PAYG instalments spread your tax across the year. The ATO enters you automatically when all three apply: instalment income of at least $4,000, tax payable of at least $1,000 on your last assessment, and notional tax of at least $500. You can vary the instalment amount if your income changes during the year.
GST is separate from income tax. It is 10% on taxable sales, offset by GST credits on purchases, and reported through the BAS. Registered businesses can use simpler reporting options. VJM Global's GST service reviews accounts and files reports for GST-registered Australian businesses.
Common deductions and the evidence needed
- Home-based costs: 70 cents per hour fixed rate for 2025-26 (keep a full-year record of hours), or actual costs with a calculation. Occupancy costs only apply with a genuine place of business.
- Vehicle: 88 cents/km in 2025-26 (91 cents in 2026-27), up to 5,000 km, or a logbook kept for 12 continuous weeks.
- Phone and internet: business share only; a 4-week diary helps.
- Equipment, software, fees, insurance, advertising: invoices and receipts.
- Personal super: deductible within the $30,000 concessional cap for 2025-26, with a valid notice of intent lodged with your fund.
A practical management system
- Keep business and personal transactions in separate accounts
- Reconcile regularly and store records digitally
- Set aside money for tax and GST
- Review profit before each payment date
Deductions reduce taxable income. They don't create a dollar-for-dollar refund, so claim only genuine, substantiated expenses.
Common Issues, Misconceptions and When to Get Help
Misconceptions worth correcting
- An ABN or invoice doesn't settle your tax status.
- Not every business expense is deductible.
- GST isn't income tax.
- Income through a digital platform still needs reporting.
Frequent errors
The ATO's sole trader tax tips flag these mistakes:
- Omitting side-hustle, cash or barter income
- Claiming private portions of costs
- Incorrectly offsetting non-commercial losses
- Missing GST registration
- Incomplete records
- Misreporting personal services income
When to get professional help
Professional advice pays off when you deal with:
- Multiple income streams or employees
- Partnership or company structures
- Personal services income
- GST and BAS obligations
- Overseas income, asset sales or losses
- An ATO review
VJM Global's accounting, bookkeeping and tax-compliance professionals support Australian businesses with organised records, financial reporting and compliance assistance. Pricing is quoted by service scope.
This article is general information only, not individual tax, legal or financial advice. Consult current ATO guidance or a registered tax agent for your situation.
Conclusion
Getting self-employment tax right comes down to five habits:
- Classify yourself correctly
- Record all income
- Claim only eligible, substantiated expenses
- Lodge the right return
- Meet your payment obligations
Regular bookkeeping and periodic tax reviews improve cash-flow planning and cut the risk of missed income, unsupported deductions or late payments. If your structure is complex or involves cross-border income, get professional advice before you lodge.
Frequently Asked Questions
How much tax do you pay if self-employed?
It depends on taxable income, deductions, other income, the Medicare levy and current rates. Income tax differs from GST and PAYG instalments. Check the ATO's current rates or ask an adviser.
How do I get the biggest tax refund if I am self-employed?
A refund isn't guaranteed. The lawful approach is to report all income, claim every eligible and substantiated deduction, keep accurate records and check available offsets without inflating expenses.
What are the new rules for self-employed people?
For 2026-27, the rate on taxable income from $18,201 to $45,000 falls to 15 cents per dollar. The $20,000 instant asset write-off is law for eligible small businesses from 1 July 2026.
How do I file my taxes if I am self-employed in Australia?
Calculate business income and deductions, report the net result through the Business and professional items schedule and your individual return, review related obligations, then lodge via myTax or a registered tax agent.
What can I claim as a self-employed tax deduction?
Expenses generally must relate to earning business income, be apportioned for private use and be supported by records. Common categories include home-office, vehicle, phone, equipment and insurance costs.
Do self-employed people need to pay GST or PAYG instalments?
It depends on your circumstances and ATO thresholds. GST generally applies at $75,000 turnover, and PAYG instalments start when the ATO criteria are met. Both are separate from your annual return.
