The short answer
You don't need a tax agent to lodge a tax return in Australia. Anyone with a TFN can self-lodge through the ATO (ATO guidelines)'s myTax portal — it's free, supported by the ATO, and typically processes a refund in under two weeks.
You probably should consider a Registered Tax Agent when your situation moves outside salaried income with standard work-related deductions. The most common triggers: capital gains events, multiple income sources, business or trust income, foreign income, or a previous year you want to amend.
Below is a practical framework for deciding which side of the line your return sits on.
5 questions that decide it for most people
Answer each honestly. One or more "yes" generally means a Registered Tax Agent will save you more than the fee — both in tax outcome and in time spent.
1. Did you sell shares, crypto, or property in FY2025–26?
If yes, you have a Capital Gains Tax (CGT) event. The 50% CGT discount, cost-base adjustments, and capital-loss carry-forwards have rules that are easy to get wrong in myTax. A misstep here often costs more than ten times the tax-agent fee.
2. Do you have rental property income — especially more than one property, or any negative-gearing situation?
Multi-property returns trigger interest apportionment, depreciation schedules, and split-ownership calculations. Investment property is the single most-common audit trigger the ATO publishes in its annual focus areas.
3. Do you have business income from an ABN, trust distributions, or partnership share?
Sole-trader, contractor, and gig-economy income (Uber/DoorDash/freelance) all need a Business Schedule. PSI (Personal Services Income) rules, GST registration thresholds, and instant asset write-off rules apply differently for each.
4. Did you earn foreign income, hold foreign assets, or change tax-residency during the year?
Foreign income includes overseas pensions, dividends from foreign shares, rental income on overseas property, and remittances. Australian residents are taxed on worldwide income; non-residents only on Australian-sourced income; dual-status returns for the year you moved are the trickiest of all.
5. Do you need to amend a prior-year return, or are you behind on lodgement?
ATO amendments and late-lodgement situations carry different forms and timing rules. A Tax Agent can also access lodgement extension dates that the public can't (typically 31 March or 15 May for tax-agent clients vs 31 October self-lodge cut-off).
When DIY via myTax is fine
myTax does a good job for the majority of Australian taxpayers. You're probably fine self-lodging if:
- You're an employee on a single PAYG salary
- Your deductions are standard work-related expenses (WFH hours, uniforms, tools, professional memberships)
- You don't have rental property, business income, or capital gains
- You're an Australian tax resident for the full year
- Your only investment income is bank interest or simple Australian-shares dividends with franking credits
For this profile, the ATO's pre-fill data covers most of the form, and the entire process usually takes 30–60 minutes. Use a tool like AusTax AI to surface deductions you might miss, export a tax-summary that maps field-by-field to myTax, and lodge yourself.
When a Registered Tax Agent helps
A Registered Tax Agent earns their fee in three ways:
1. Outcome — finding deductions and structures you'd miss
Agents handle hundreds or thousands of returns per year. They see patterns across occupations and circumstances that flag deductions individual taxpayers commonly overlook (depreciation schedules, second-job concessions, salary-sacrifice optimisation, MLS planning at the threshold).
2. Risk — getting the complex fields right
Audit risk concentrates in the messy fields: CGT, rental property, foreign income, work-related expense claims above ATO averages, and self-employed income. An agent's signature on the return signals to the ATO that a qualified professional has reviewed it — and shifts some of the responsibility for substantiation if questions arise later.
3. Time — outsourcing the hours
A complex return can take a confident self-lodger 4–8 hours of focused work, often spread over several attempts. A Registered Tax Agent doing it as their day job will finish the same return in much less time, while you do something else.
Tax Agent vs myTax — at a glance
| Time you spend | 30 min (simple) — 4+ hours (complex) | ~30 min uploading info; agent does the rest |
|---|---|---|
| Lodgement deadline | 31 October (for individuals) | Up to 15 May the following year (agent extension) |
| CGT / rental / business | Manual myTax fields; error-prone | Agent handles the schedules |
| Audit support | You substantiate everything yourself | Agent's signature + records on file |
| Refund timing | Usually 1–2 weeks after lodgement | Same — refund timing is ATO-controlled |
Need a professional?
Need a professional? Browse every TPB-registered tax agent near you in the AusTax directory, or post a request and matching practices will contact you — free.
Returning clients are automatically matched with the same Tax Agent in subsequent years. Your assigned agent sees your full history across financial years, and your dashboard shows their TPB registration number, business name, contact details, and specialty fields. If you want to switch agents in a future year, that's available too — but by default the platform preserves the same client–agent relationship year over year, just like a traditional firm would.
a registered tax agent (see the directory) The service is refundable up until your assigned agent begins reviewing.
AusTax AI itself is the technology platform; your assigned Tax Agent holds the TPB registration and is responsible for the lodgement under the Tax Agent Services Act 2009 (TASA).
What about a traditional accountant?
A traditional local accountant remains a great choice for complex multi-year tax planning, business or family-trust structures, or face-to-face meetings. For these scenarios the higher fee (typically AU$200–500+ for a standard individual return at a traditional firm — more for genuinely complex cases) buys depth beyond a single year's return.
For most standard individual returns the picture is different. a registered tax agent (see the directory) The real differences are:
- Workflow: all-digital (in-app messaging, document upload, secure POI, ATO submission) vs office visits
- Speed: 24–72 hour turnaround in standard scope vs traditional bookings
If your situation goes beyond standard individual scope (e.g. a registered tax agent (see the directory)
Decision-time summary
Self-lodge via myTax if you're a salaried employee with standard deductions, no investments beyond bank interest, no rental property, and stable Australian residency.
Need a professional? Browse every TPB-registered tax agent near you in the AusTax directory, or post a request and matching practices will contact you — free.
For most people the choice isn't permanent — many Australians self-lodge in simple years and engage a Registered Tax Agent in years with complications (selling a property, starting a business, moving overseas).
Need Help With Your Tax Return?
Complex situation? a registered tax agent (see the directory) Our partner agents review every detail for accuracy and compliance.
A note on AI-prepared returns
Modern AI tools like AusTax AI can organise your receipts, surface eligible deductions, and produce a draft tax summary that maps to myTax fields. They're a useful preparation layer regardless of whether you self-lodge or hand off to a Tax Agent.
AI output is general information, not tax advice. Final responsibility for the lodgement rests with you (for self-lodgement) or your Registered Tax Agent (for agent-lodged returns).
*Disclaimer: This is general information only and does not constitute personal tax advice. Consult a registered tax agent for advice tailored to your specific situation. Always verify against the latest ATO guidelines at ato.gov.au.*