1. Who Needs to Lodge a Tax Return in Australia?
Most Australian residents need to lodge a tax return if they earned income during the financial year (1 July to 30 June). But the rules are more specific than that.
You must lodge a tax return if any of the following apply:
- You had tax withheld from your wages by an employer
- You had gross income over the tax-free threshold ($18,200 in FY2026)
- You ran a business or were self-employed as a sole trader
- You received capital gains from selling shares, property, or other assets
- You had investment income (rental income, dividends, interest)
- You received a government payment (Centrelink, Veterans Affairs) above certain thresholds
- You are under 18 and earned more than $416 from non-employment income
You may not need to lodge if your income was entirely below the tax-free threshold and you had no tax withheld. However, you should still check with the ATO or a Personal Tax Accountant, as failing to lodge when required attracts penalties.
If you are unsure, the ATO’s Do I Need to Lodge? tool at ato.gov.au can help. For anything more complex than a simple salary, getting professional advice is usually the smarter move.
2. myGov vs Tax Agent: Which Is Right for You?
There are two main ways to lodge your tax return in Australia: through the ATO’s myTax platform (accessed via myGov) or through a registered tax agent. Here is how they compare.
| Factor | DIY via myGov (myTax) | Registered Tax Agent |
|---|---|---|
| Cost | Free | From ~$150 (individual) to $500+ (complex) |
| Lodgement deadline | 31 October | Typically 15 May the following year |
| Best for | Simple salary, one employer, straightforward deductions | Multiple income sources, business income, investments, property |
| Pre-filled data | Yes — employer data, interest, govt payments auto-filled | Yes — agent software pulls the same data |
| Deduction accuracy | Your responsibility — easy to miss legitimate claims | Reviewed by a qualified professional — deductions maximised |
| Audit support | None — you handle ATO queries yourself | Agent represents you and responds to the ATO |
| Sole trader / business income | Possible — but complex to get right | Strongly recommended |
| Speed of refund | Typically 2 weeks online | Similar — agent lodges electronically |
| Investment property | Possible — depreciation schedules easy to miss | Recommended |
The honest answer: if your situation is a single salary, standard deductions, and nothing unusual, myTax is fine. The moment you add a side business, a rental property, share dividends, or significant work-related expenses, a registered Chartered Accountant will almost always find more than they cost.
3. How to Lodge a Tax Return in Australia: Step by Step
Gather Your Documents and Income Information
Collect your payment summaries (or income statements from myGov), bank interest statements, dividend statements, rental income records, and any government payment summaries. For sole traders, you also need your business income and expense records. Have receipts for any deductions you plan to claim.
Wait for Pre-Fill Data to Load (After Late July)
If lodging via myTax, most income data from employers, banks, and government agencies is automatically pre-filled from late July onwards. Do not lodge before this data appears or you risk missing income already reported to the ATO, which can trigger an audit later.
Log In to myGov and Open myTax
Go to my.gov.au, log in, and select the ATO from your linked services. From the Tax menu, choose Lodge a Return. If you have not linked the ATO to your myGov account before, you will need your Tax File Number (TFN) and some identity documents to complete the linking process first.
Review and Confirm Your Pre-Filled Income
Check every pre-filled income item carefully. Employers report to the ATO, but errors happen. If a figure looks wrong, contact your employer before lodging. Add any income not pre-filled: cash income, rental income, overseas income, capital gains from share or property sales.
Add Your Deductions
This is where most people leave money on the table. Enter work-related expenses (uniforms, tools, professional subscriptions, home office costs), vehicle and travel expenses using the correct ATO method, self-education costs directly related to your current work, and any other eligible deductions. You must have receipts for claims over $300 in total work expenses. For a full breakdown of what you can claim, see our guide on Tax Deductions for Small Business in Australia.
Answer the Offsets and Rebates Questions
myTax will ask about tax offsets you may be eligible for: the Low Income Tax Offset (LITO), private health insurance rebate, spouse tax offset, and others. Answer honestly — missing an offset you are entitled to means a smaller refund.
Review Your Estimated Tax Result
Before you submit, myTax shows you an estimated refund or tax owing. If the result looks wrong (far higher or lower than expected), stop and review each section again or contact a tax agent before lodging. Errors corrected before lodgement cost nothing. Errors corrected after can attract penalties.
Submit and Check Your ATO Correspondence
Once you submit, the ATO processes your return (usually within 2 weeks for online lodgements). Check your myGov inbox for your Notice of Assessment. This confirms your final tax position and refund amount, or tells you what you owe and when. If you owe tax, payment is due by 21 November for self-lodgers.

4. Lodging a Tax Return as a Sole Trader
How It Differs from an Individual Return
Sole traders lodge their business income and expenses in the same individual tax return as their personal income — there is no separate company return. Your net business profit (after deductible business expenses) is added to any employment income you earned and taxed at your individual marginal rate. Our Taxation and Accounting team regularly handles sole trader returns and can ensure nothing is missed.
What You Need to Include
- Total business income: all money received for goods or services, regardless of whether you received a payment summary
- Business deductions: operating costs, vehicle expenses, home office, professional fees, insurance, marketing costs, equipment depreciation
- Net business income or loss: if your business made a loss, specific rules apply — you may be able to offset it against other income, but only if you meet the ATO’s non-commercial loss rules
- GST: if registered for GST, your BAS reporting is separate from your income tax return. Your income tax return uses GST-exclusive figures
PAYG Instalments
Once your business income reaches a certain level, the ATO will move you onto PAYG Instalments — quarterly prepayments towards your expected tax liability. These are credited against your final tax bill when you lodge. If you receive a PAYG instalment notice, you still need to lodge a full tax return at the end of the year.
Sole trader returns are significantly more complex than simple employee returns. A qualified tax accountant will typically find deductions a first-time lodger misses — and the fee is itself a tax-deductible expense.
5. 7 Common Tax Return Mistakes Australians Make
| # | Mistake | Why It Costs You |
|---|---|---|
| 1 | Lodging before pre-fill is complete | Incomplete data may trigger an amendment or audit flag later |
| 2 | Claiming deductions without receipts | ATO’s data matching program flags unsupported claims during audit |
| 3 | Missing investment income | Dividends, interest and rental income must be declared — the ATO receives this data from financial institutions |
| 4 | Claiming 100% of vehicle expenses without a logbook | Logbook method requires 12 weeks of records; cents-per-km covers up to 5,000 km at $0.88/km for FY2026 |
| 5 | Forgetting capital gains | Selling shares, crypto, managed funds or property triggers a CGT event — even a loss must be declared |
| 6 | Not lodging at all | Failure to Lodge penalty: $330 per 28 days up to $1,650. Interest accrues if tax is owed |
| 7 | Copy-pasting last year’s deductions | The ATO has publicly warned against this — deductions must reflect what you actually spent in the relevant financial year |

6. Frequently Asked Questions
Related Articles
Not sure if you are lodging correctly?
Our Chartered Accountants lodge on your behalf — with an extended deadline to 15 May
We review your full income picture, find every deduction you are entitled to, and handle your ATO correspondence. Call us on 02 9980 1556 or book below.
