TL;DR
- Generalist accountants routinely misapply the Australian tax residency test, exposing expats to the wrong tax treatment on Australian income.
- Non-residents lose access to the 50% CGT discount on foreign resident capital gains from Australian property, a detail many previous accountants never flag.
- Foreign resident CGT withholding can be withheld at settlement if residency status is not managed correctly.
- Double tax agreement Australia coverage varies by country and income type; few generalist accountants apply it correctly for expats.
- Overdue returns are more common than expats admit, and the ATO has active compliance programs targeting non-resident landlords and HECS/HELP holders.
Why Do Expats End Up With the Wrong Tax Advice in the First Place?
The core problem is not negligence. It is misaligned specialisation. Most Australian accountants are highly competent for Australian residents. The non-resident tax landscape is a genuinely different discipline: separate tax rates, different CGT rules, withholding obligations, DTA mechanics, and residency tests that require legal and factual analysis, not just a checkbox.
When an expat keeps their Sydney accountant after moving to Dubai or Singapore, that accountant typically continues filing as though residency has not changed, or applies the wrong residency classification without running the correct tests. The result is a tax position that looks lodged and compliant on the surface but contains material errors underneath [2].
What Is the Australian Tax Residency Test, and Why Do Accountants Get It Wrong?
Tax residency in Australia is not determined by passport or visa status. The ATO applies four distinct tests: the Resides Test, the Domicile Test, the 183-Day Test, and the Commonwealth Superannuation Test [1]. Each test has its own criteria, and the outcome of one does not override the others.
The Domicile Test is where most errors occur. An expat who owns a home in Australia, holds Australian bank accounts, and intends to return may still be classified as a non-resident if their “permanent place of abode” has genuinely shifted offshore. Conversely, an expat who has been abroad for two years may still meet the Resides Test if their economic and social ties remain anchored in Australia [2].
The consequences of getting this wrong cut in both directions:
- Classified as a resident when you are not: taxed on worldwide income unnecessarily.
- Classified as a non-resident when you are still a resident: loses tax-free threshold access and may lodge incorrectly [4].
How Does Non-Resident Status Change Your CGT Position on Australian Property?
Building on the residency point above, the CGT consequences of non-resident status are substantial and often unexpected. This is the finding that most surprises expats during a health check.
Australian residents who hold a property for more than 12 months benefit from a CGT discount before calculating their taxable capital gain. Non-residents and foreign residents do not. The CGT discount non-resident rule means the full nominal gain is assessed at the applicable non-resident tax rate, which can produce a materially larger tax liability than an expat anticipated when they purchased [3].
| Scenario | CGT Discount Available? | Taxable Gain Calculation |
|---|---|---|
| Australian resident, property held 12+ months | Yes, CGT discount applies | Discount applies to nominal gain |
| Non-resident / foreign resident, property held 12+ months | No discount (for gains accrued during non-residency) | Full nominal gain assessed |
| Non-resident who was resident at purchase | Partial discount may apply for residency period | Gain apportioned; specialist calculation required |
Few generalist accountants explain this distinction at the point of departure. Expats often carry an incorrect assumption that the discount still applies, and the error only surfaces at sale, when the ATO assesses the return [3].
What Is Foreign Resident CGT Withholding, and Why Should You Know Before Settlement?
A related but distinct concern is the foreign resident CGT withholding (FRCGW) regime. Under this framework, when a foreign resident sells Australian property, the purchaser is required to withhold an amount and remit it directly to the ATO. As of 1 January 2025, the ATO removed the previous threshold entirely, meaning withholding applies to all property sales regardless of value [1].
The withheld amount is calculated as a percentage of the contract price. On a $1.2 million property, this produces a substantial cash flow impact at settlement, regardless of what the actual taxable gain is. The withheld amount is credited against the final tax liability when the return is lodged, but the cash impact is immediate and often a shock to expats who were not warned.
To avoid the withholding, a seller who qualifies as an Australian resident can apply for a clearance certificate from the ATO before settlement. Foreign residents can apply for a variation if their actual tax liability is lower than the withheld amount. Both require proactive action before settlement, not after. This is a standard step in every ODIN Tax property-related engagement.
Are Double Tax Agreements Actually Being Applied to Your Returns?
Stepping back from CGT mechanics, a separate concern that surfaces regularly in health checks is the underuse of Australia’s double tax agreement network. Australia has tax treaties with more than 40 countries, designed to prevent the same income from being taxed twice [1].
The double tax agreement Australia framework does not apply automatically. It must be actively claimed, and the correct mechanism varies by income type and country of residence. Dividend income, rental income, and employment income are all treated differently under different treaties. The Foreign Income Tax Offset (FITO) is the primary mechanism for claiming treaty relief in an Australian return, but it requires correct documentation and cross-referencing of foreign tax paid [2].
The practical gap: many expats in Hong Kong, Singapore, the UAE, the UK, and the US are paying tax in their country of residence but not claiming FITO correctly in their Australian returns, leaving double taxation uncorrected and overpaying the ATO.
Frequently Asked Questions
How do I know if I am a tax resident or non-resident of Australia?
Residency is determined by applying the ATO’s four statutory tests (Resides, Domicile, 183-Day, Commonwealth Superannuation). Your passport, visa, or length of time abroad alone does not determine the outcome. A formal residency determination by a specialist is the only reliable method [1].
Do I still need to lodge an Australian tax return if I live overseas?
Yes, in most cases. If you have Australian-sourced income (rental income, dividends, capital gains) you have a lodgment obligation regardless of where you live. Non-residents also have specific lodgment requirements [2].
What happens if I have not filed Australian tax returns for several years?
The ATO has active compliance programs targeting non-residents with overdue returns. Penalties and interest can apply, but the ATO also has amnesty and voluntary disclosure pathways that a Registered Australian Tax Agent can navigate on your behalf. The longer returns remain outstanding, the fewer options are available.
Can I still claim the CGT discount if I was a resident when I bought the property?
Potentially in part. For gains that accrued during the period of Australian tax residency, some discount treatment may apply, but the calculation is complex and requires apportionment. This is not a standard calculation most generalist accountants perform correctly [3].
What is the difference between foreign resident CGT withholding and CGT itself?
FRCGW is a withholding mechanism at settlement, not the tax itself. The amount withheld from the contract price is a prepayment against your eventual CGT liability. Your actual CGT is calculated when you lodge your return. The two figures are often very different, which is why a variation application or clearance certificate matters.
What is a tax health check and what does it cover?
A tax health check is a structured review of your current Australian tax position. At ODIN Tax, this covers residency classification, lodgment history, CGT exposure on property and shares, FRCGW obligations, DTA entitlements, HECS/HELP status, and superannuation. It is designed to surface risks and missed entitlements before they become costly problems.
How do I claim relief under a double tax agreement with Australia?
Relief is claimed via the Foreign Income Tax Offset in your Australian tax return, supported by evidence of foreign tax paid. The applicable treaty, the income type, and the rate of relief must be correctly identified. Each country’s treaty with Australia has different provisions, so a generic approach rarely produces the correct outcome [1] [2].
About ODIN Tax
ODIN Tax is Australia’s specialist tax agent practice for Australian expats and non-residents, part of the 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, with a 4.9/5 rating from 330+ verified reviews. Led by Tax Director Pau Lam, with over 10 years of specialist Australian expat tax experience, ODIN Tax handles Australian tax returns, overdue lodgments, tax residency determinations, CGT calculations, and FITO applications for high-income expats in finance, tech, consulting, and corporate leadership. Unlike generalist accounting firms, ODIN Tax’s entire practice is built around the non-resident tax landscape, and its advice is coordinated with mortgage structuring and property settlement for clients who own or are acquiring Australian property from overseas.
Think your Australian tax position might have gaps?
An ODIN Tax health check is the fastest way to find out what your previous accountant may have missed, before the ATO finds it first. Book a session with a specialist who works exclusively with Australian expats.
Disclaimer: This article contains general information only and does not constitute personal tax advice. Tax laws and ATO guidance are subject to change. Individual circumstances vary significantly, and the correct tax treatment of your situation depends on your specific facts. All rates and thresholds referred to are subject to change and should be verified against ATO guidance for the relevant financial year. Please consult a Registered Australian Tax Agent for advice tailored to your circumstances. ODIN Tax is a Registered Australian Tax Agent.
References
- Expat Tax in Australia-Everything You Should Know (titanwealthinternational.com)
- Australian tax: A guide for foreigners and expats (www.expertsforexpats.com)
- Australian Expat Tax Changes – 2026 Budget Guide for Expats – Expat Taxes Australia (www.expattaxes.com.au)
- US tax guide for Americans in Australia 2026: rates and filing (www.taxesforexpats.com)
