Filing a leaving Australia tax return for the year you departed is one of the most technically complex lodgments an individual can face. In that single Australian financial year (1 July to 30 June), you hold two different tax statuses: Australian resident for part of the year and foreign resident for the remainder. Each status carries a different tax rate structure, different deduction rules, and different source-of-income obligations. The ATO does not split the year for you automatically, and a generalist accountant who misclassifies the boundary can produce an outcome that is materially incorrect [2].
TL;DR
- The year you leave Australia is a split-year: you are taxed as a resident up to your departure date and as a foreign resident from that date onward.
- Your tax residency status change must be determined by the ATO’s residency tests, not simply by when your flight departed.
- Non-residents are taxed only on Australian-sourced income, but at higher rates with no tax-free threshold for the non-resident portion [2].
- Double tax agreement Australia provisions can offset foreign taxes you paid on Australian income during the non-resident period [2].
- The standard deadline to lodge an Australian tax return non-resident applies: 31 October, unless you use a registered tax agent [1].
What Exactly Is a Split-Year Tax Return in Australia?
A split-year tax return is not a formal ATO product category; it is the practical reality of lodging for a year in which your Australian tax residency test outcome changed mid-year. The ATO assesses you as a resident or non-resident for each dollar of income based on which status applied when that income was earned, not your status at 30 June [2].
- Resident period: All worldwide income is assessable at resident tax rates, and the tax-free threshold applies.
- Non-resident period: Only Australian-sourced income is assessable, and it is taxed at foreign resident tax rates with no tax-free threshold.
The practical implication: if you left in November, roughly five months of the year are taxed under one regime and seven months under another. Blending these incorrectly is a common filing error.
How Does the ATO Determine When You Became a Non-Resident?
Building on the split-year concept above, the harder question is exactly when the residency change occurred, because it is rarely the date of your departing flight. The Australian tax residency test framework uses four tests, applied in order [2]:
| Test | Who It Applies To | Core Question |
|---|---|---|
| Resides Test | All individuals (primary test) | Do you factually reside in Australia? Considers physical presence, family, assets, lifestyle. |
| Domicile Test | Those who fail the Resides Test | Is your domicile Australia, unless your permanent place of abode is now overseas? |
| 183-Day Test | Those entering Australia from overseas | Were you present in Australia for more than 183 days in the income year? |
| Commonwealth Superannuation Test | Government employees and their spouses/children | Are you a member of a Commonwealth government superannuation scheme? |
For most people who left Australia permanently, the Domicile Test is decisive. You remain an Australian resident for tax purposes until you establish a permanent place of abode overseas, which is a question of intention, continuity, and material ties, not simply duration of absence.
What Income Must You Report for Each Period?
A related but distinct question is the scope of income that falls inside your return. Getting this wrong in either direction creates unnecessary tax exposure or potential penalties [2].
- During the resident period: Declare all income worldwide, including salary from a foreign employer if you began working overseas before 30 June of that year.
- During the non-resident period: Declare only Australian-sourced income. This typically includes Australian rental income, Australian dividends, Australian interest, and any capital gains from taxable Australian property.
- Foreign income earned during the non-resident period: Not assessable in Australia. You do not include your Hong Kong, Singapore, or UK salary for the months you were a non-resident.
Does a Double Tax Agreement Affect Your Split-Year Return?
Stepping back from income classification, a separate concern is whether foreign taxes you paid during the resident period can be offset against your Australian liability. This is where double tax agreement Australia provisions become directly relevant [2].
- Australia has tax treaties with over 40 countries. If you earned foreign income during the resident period and paid tax on it overseas, a Foreign Income Tax Offset (FITO) may reduce your Australian tax dollar for dollar.
- The offset is capped at the Australian tax that would otherwise be payable on that foreign income; it cannot generate a refund on its own.
- For the non-resident period, Australian-source income such as rent or dividends may be taxed in Australia first, with relief available in your new country of residence under the same treaty framework.
Applying a double tax agreement correctly in a split-year context requires knowing which treaty applies, which article covers the income type, and whether the tiebreaker residency provisions affect your status. This is an area where Australian expat tax advice from a specialist, rather than a generalist, is material to the outcome.
What Are the Lodgment Deadlines for the Year You Left?
The mechanics of the split-year return do not change the standard lodgment rules. You must lodge your Australian tax return by 31 October if you are lodging yourself [1]. Registered tax agents have access to extended lodgment programs, which can push deadlines out significantly for eligible clients [1] [2].
- Failing to lodge on time can result in ATO failure-to-lodge penalties [1].
- If you have multiple years of overdue lodgments from your departure year onward, the ATO’s amnesty and penalty remission options may be available, but these require proactive engagement, not silence.
Frequently Asked Questions
Do I need to file an Australian tax return if I left Australia and earned no Australian income?
Yes, in most cases you still need to lodge for the year you departed because you earned Australian-sourced income during the resident period. If you genuinely had zero assessable income for the full year, you may not need to lodge, but this should be confirmed with a Registered Australian Tax Agent.
Can I claim the tax-free threshold for the year I left Australia?
You can claim a partial tax-free threshold for the months you were an Australian resident. The non-resident portion of the year carries no tax-free threshold [2].
What happens to my HECS/HELP debt when I become a non-resident?
HECS/HELP debt does not disappear on departure. Non-residents with HELP debt are required to make compulsory repayments based on their worldwide income, reported annually to the ATO. Non-compliance attracts penalties.
I still own a rental property in Australia. How is it taxed during my non-resident period?
Rental income from Australian property is always taxable in Australia regardless of your residency status. As a foreign resident for tax Australia purposes, you are taxed on Australian rental income at non-resident rates. You can still claim deductions for expenses related to the property, including interest, depreciation, and property management fees [2].
If I sell my Australian property now that I am a non-resident, do I get the 50% CGT discount?
No. Foreign residents are not entitled to the 50% CGT discount on gains accrued after 8 May 2012. Additionally, as of 1 January 2025, Australian property transfers by foreign residents are subject to Foreign Resident Capital Gains Withholding rules requiring the buyer to withhold on the purchase price, which now applies to all property transfers by foreign residents [2].
My departure date and the date I started my overseas job are different. Which date does the ATO use?
The ATO uses the date you ceased to be an Australian resident under the residency tests, not your employment start date and not your flight date. These often align but not always. The Domicile Test in particular depends on when you demonstrably established a permanent place of abode overseas, which involves weighing multiple factors.
Can I lodge my split-year return myself, or do I need a tax agent?
You can lodge yourself through myTax, but split-year returns involve manual income apportionment, residency date determination, and potentially FITO calculations that myTax does not guide you through automatically. Errors here are not trivial. Using a Registered Australian Tax Agent who specialises in non-resident returns materially reduces the risk of an incorrect outcome [2].
About ODIN TaxODIN Tax is Australia’s dedicated tax agent practice for Australian expats and non-residents, and part of the broader ODIN Group alongside ODIN Mortgage. As a Registered Australian Tax Agent headquartered in Hong Kong, ODIN Tax has served 10,000+ Australian expats across 40+ countries, covering everything from split-year departure returns and overdue lodgment resolution to CGT advice, HECS debt management, and Foreign Income Tax Offset applications. For the expat filing a departure-year return, ODIN Tax brings the kind of specialist pattern recognition that distinguishes a correct outcome from a costly one. ODIN Tax holds a 4.9/5 Google rating from 330+ verified client reviews.
Filing for the year you left Australia is one of the most complex returns you will ever lodge. Get it right the first time.
References
- How to complete your Australian tax return | Study Australia (www.studyaustralia.gov.au)
- The Complete Guide to Tax Returns in Australia (2025-26) (sleek.com)
