Australian Sole Trader Tax Guide: Income, GST & BAS
Australian sole traders report business income through their individual tax return and generally pay tax on net business income at individual rates. GST, PAYG instalments, superannuation and recordkeeping are related obligations but are not all part of income tax. Start with clear records and identify which registrations apply.
Sole trader income and business costs
Record business receipts from invoices, cash, card and online platforms. Deductions generally must relate to earning assessable income, not be private or domestic, and have evidence. Apportion mixed-use costs. Equipment may be depreciated or qualify for a concession depending on current law and eligibility; do not assume a large purchase is immediately deductible. Personal services income rules, employee-versus-contractor status and business losses can change the result.
GST registration, BAS and instalments
GST registration is generally required once GST turnover reaches, or is expected to reach, $75,000 under ATO rules, subject to exceptions. Turnover is not profit. Once registered, you may need to charge GST on taxable sales, lodge Business Activity Statements (BAS), report GST collected and claim eligible credits. PAYG instalments prepay expected income tax; they are reconciled in the annual return. Sole traders should also plan for personal super contributions and business cash flow.
| Area | Purpose |
|---|---|
| Individual return | Reports business net income with personal income tax |
| GST registration | Applies when turnover tests require it |
| BAS | Reports GST and other activity amounts when required |
| PAYG instalments | Prepay expected income tax during the year |
Practical checklist
- Reconcile invoices, refunds, fees and platform receipts to gross income.
- Save receipts and record business purpose and private-use share.
- Track assets, car costs and home-office records under ATO methods.
- Monitor current and projected GST turnover and register when required.
- Reconcile BAS and PAYG instalments to your annual individual return.
General information only, not personal tax advice. Check current official guidance for the relevant tax year or consult a qualified professional.