How a sole trader tax return usually works
A solid process starts with a quick position check: your ABN status, GST registration, software or spreadsheet setup, prior year returns and BAS history, PAYG instalments, and any ATO letters or overdue items.
From there, the work splits into three parts:
- Data and records: collect bank statements, sales and expense records, payroll and super, vehicle logbook or travel records, and asset purchases.
- Prepare and review: reconcile income and expenses, apportion mixed‑use costs, calculate depreciation, include PAYG instalments and government incentives where applicable, then review for accuracy.
- Lodge and follow‑up: lodge the individual return with the business schedule, address ATO queries fast, and plan for next year’s BAS/PAYG/super workflow.
What you can claim as a sole trader
Only claim the business‑use portion and keep evidence for every claim. Typical deductions include:
- Operating costs: advertising, accounting fees, bank and merchant fees, software subscriptions, domain and hosting, professional memberships.
- Vehicle and travel: logbook method (business‑use percentage of running costs and depreciation) or cents‑per‑km (subject to caps). Keep fuel/maintenance records or a valid logbook.
- Home‑based business: running expenses (electricity, internet, phone, cleaning) and, where eligible, occupancy costs. Use an accepted ATO method and maintain records.
- Tools and equipment: immediate deduction or depreciation depending on current ATO thresholds and asset type. Check the latest thresholds each year.
- Phone and internet: apportion business use with reasonable, supportable percentages.
- Insurance: public liability, professional indemnity, business insurance and relevant policy costs.
- Super: personal super contributions may be deductible if you lodge a valid notice of intent with your fund and meet ATO rules.
If you buy or sell assets, or use crypto or shares for business, ensure records are comprehensive. For capital items and CGT, see Capital Gains Tax Help.
Deadlines, BAS and PAYG instalments
- Annual return: financial year is 1 July–30 June. Self‑lodgers are usually due 31 October. Registered agents can access later dates on the ATO lodgment program.
- GST and BAS: if GST‑registered, lodge BAS monthly or quarterly to report GST collected and credits. BAS due dates differ from your annual return.
- PAYG instalments: the ATO may require instalments during the year. These reduce your end‑of‑year bill and are credited on your return.
- Super: if you employ staff, pay super guarantee by the quarterly cut‑offs. Personal contributions for yourself must meet timing and notice requirements to be deductible.
- Penalties and interest: late lodgments or payments can attract penalties and GIC. Engage early if you need a plan.
Software, records and evidence
Whether you use Xero, MYOB, QuickBooks or spreadsheets, the ATO expects accurate records for at least five years. Bank feeds and digital receipts help you substantiate claims and speed up review.
- Bank reconciliation: reconcile all business accounts, including PayPal, Stripe and Square.
- Receipt capture: store legible receipts with supplier, date, amount and purpose.
- Logbook/travel: maintain a valid 12‑week logbook or reliable trip tracking if claiming vehicle costs.
- Asset register: track asset purchases, disposals and private use adjustments.
If your books need attention before tax time, see Bookkeeping Services or BAS Agent Services.
Choosing the right help
Scope
Confirm the service covers data cleanup, deductions review, business schedule, BAS alignment, PAYG instalments and the final lodgment.
Software fit
Pick a provider fluent in your tools who can explain workflows and evidence requirements, not just name software.
Turnaround and communication
Ask about response times, lodgment windows, and how ATO follow‑ups are handled during peak periods.
Commercial fit
Compare fixed fees vs hourly, what’s included, and whether you want compliance‑only or ongoing advisory support.
Sole trader tax return checklist
- Confirm ABN, GST status and prior year lodgments.
- Export bank statements and reconcile all accounts.
- Collect sales invoices and expense receipts; apportion any mixed‑use costs.
- Update your asset register; review depreciation eligibility.
- Compile vehicle logbook or travel records if claiming car expenses.
- Download BAS history and PAYG instalments from ATO Online.
- Consider personal super contributions and required notices.
- Prepare and review the business schedule; resolve anomalies.
- Lodge on time and plan cash flow for any tax payable.
When to consider a different structure
If profits are rising, you’re taking on employees, or you need asset protection, compare staying a sole trader with a company or trust. Start with the commercial goals, then consider tax outcomes, admin load and costs. Explore New Business Accountant or Tax Accountant for Companies to weigh options.
Frequently asked questions
What is a sole trader tax return and how is it lodged?
It’s an individual tax return that includes your business income and expenses on the business schedule. You lodge via a registered tax agent or online. If you also lodge BAS, ensure the annual figures align to your BAS totals over the year.
What is the due date for a sole trader tax return?
Self‑lodged returns are usually due 31 October. If you’re with a registered tax agent and on their lodgment program, you may have a later date—unless you have overdue prior returns, which can shorten your deadline.
Do I need to lodge a BAS as a sole trader?
Only if you are registered for GST or have BAS obligations like PAYG instalments. BAS is lodged monthly or quarterly and is separate from your annual tax return.
What deductions can I claim?
Operating costs, business travel, vehicle expenses (logbook or cents‑per‑km), home‑based business costs, tools and equipment (depreciation rules apply), phone and internet (apportioned), insurance, bank and merchant fees, and deductible super contributions—provided you have evidence and claim only the business‑use portion.
How do PAYG instalments affect my return?
PAYG instalments paid during the year are credited against your final tax. You may vary instalments if your income changes, but keep evidence to support variations.
I have a job and a side business—how is this handled?
Your salary and withholding are combined with your sole trader results to produce your final position. Keep group certificates/Income statements and business records aligned.
Can I claim personal super contributions?
Yes, if you provide your fund with a valid notice of intent and receive confirmation, and otherwise meet ATO requirements. Timing matters, so plan before year‑end.
Best next steps
Write down your immediate outcome: on‑time lodgment, a clean set of books, maximised eligible deductions, or a plan for BAS and PAYG. Then brief a provider against that outcome—clarity here reduces cleanup later.
Browse related pages to narrow the path:
- Tax Accountant for the full tax services hub.
- Tax Accountant for Small Business if you’re growing beyond a sole trader.
- Bookkeeping Services if records need work before tax time.
- BAS Agent Services if GST/BAS is the immediate pressure point.