Few questions on a tax return cause more confusion — or carry more money — than the residency box. Tick “Australian resident for tax purposes” and the ATO taxes your worldwide income, but you get the tax-free threshold and the 50% CGT discount. Tick “foreign resident” and only your Australian-source income is taxed, but at higher rates from the first dollar, with no threshold and (for most assets) no CGT discount. Get it wrong in either direction and you may face amended assessments, interest, and penalties — and the answer has nothing to do with your passport.

This guide from Trinity Accounting Practice explains how tax residency actually works in 2026: the four common-law tests the ATO applies, what changes when your residency status changes, and the proposed new rules that have been announced but are still not law.

Tax residency is not citizenship — and not your visa

The first thing to fix in your thinking: tax residency is a separate concept from citizenship, permanent residency and visa status. You can be an Australian citizen and a foreign resident for tax purposes (a Sydneysider who moved permanently to Dubai, for example). You can equally hold a temporary visa and be an Australian tax resident (a UK migrant who has settled in Beverly Hills with a job, a lease and a family). The ATO looks at your behaviour and connections, not your paperwork from Home Affairs.

Residency is assessed against four tests set out in the tax law and case law. You only need to satisfy one of them to be an Australian resident for tax purposes. The ATO’s guidance, including Taxation Ruling TR 2023/1, sets out how they apply.

The four residency tests

1. The resides test (the primary test)

Do you “reside” in Australia in the ordinary sense of the word? The ATO weighs your physical presence, the intention and purpose of your stay, your family and employment ties, where your assets are, and how settled your living arrangements look. Someone who lives here with their family, works here, and maintains a home here resides here — whatever their visa says. If you pass this test, the other three are irrelevant.

2. The domicile test

If you do not reside in Australia under the first test, you are still a resident if your domicile (broadly, your permanent legal home) is Australia — unless the Commissioner is satisfied your permanent place of abode is outside Australia. This is the test that catches Australians working overseas: an engineer on a two-year contract in Singapore who keeps a home, family and finances in Sydney may remain an Australian tax resident the entire time. “Permanent place of abode” looks at the length, continuity and nature of your overseas living arrangements — a serviced apartment and a return ticket point one way; a long lease, local bank accounts and an indefinite stay point the other.

3. The 183-day test

If you are physically in Australia for more than half the income year (183 days), continuously or intermittently, you are generally a resident — unless your usual place of abode is outside Australia and you do not intend to take up residence here. This is the test most relevant to long-stay visitors and new arrivals.

4. The Commonwealth superannuation test

A narrow test covering certain Australian government employees posted overseas who are members of specific Commonwealth super schemes (CSS/PSS), and their families. If it applies, you are a resident regardless of where you live.

What actually changes when your residency changes

The label drives real dollars:

What is taxed. Residents are taxed on worldwide income — salary earned in London, rent from an apartment in Athens, interest in a Hong Kong account. Foreign residents are taxed only on Australian-source income.
Tax-free threshold. Residents get the $18,200 tax-free threshold. Foreign residents pay tax from the first dollar, currently starting at 30% on Australian-source income up to $135,000 (2025-26 rates).
CGT discount. Foreign residents generally cannot use the 50% CGT discount for periods after 8 May 2012, and the main residence exemption is heavily restricted for foreign residents at the time of sale.
Medicare levy. Residents generally pay the 2% Medicare levy; foreign residents do not (and are generally not entitled to Medicare).
HECS/HELP. Moving overseas does not pause your study loan — non-resident HELP debtors must report worldwide income to the ATO and make repayments above the threshold.
Departing or arriving — CGT events. Ceasing residency can trigger a deemed disposal of certain CGT assets (CGT event I1), with a choice to defer. Becoming a resident resets the cost base of foreign assets to market value on arrival.

Part-year residency, temporary residents and working holiday makers

Part-year residents. If you arrive or leave partway through the year, you may be a resident for part of the year only. The tax-free threshold is pro-rated, and your return needs the dates entered correctly — this is one of the most commonly botched items in self-prepared returns.

Temporary residents. Holders of certain temporary visas who qualify as “temporary residents” get a significant concession: most foreign-source income and foreign capital gains are exempt from Australian tax even while they are Australian tax residents. A skilled-visa holder in Sydney with a rental property back home may not need to declare that rent here. The rules switch off once you (or your spouse) become a permanent resident or citizen.

Working holiday makers. Backpackers on 417/462 visas are taxed under a separate rate schedule (generally 15% on the first $45,000) regardless of residency status, with limited exceptions arising from case law for some nationalities.

The proposed new rules — announced, but still not law

You may have read that Australia is moving to a simpler residency system built around a “bright-line” 183-day test, with a secondary factor test for people who spend 45–182 days here. That framework was announced in the 2021-22 Federal Budget — but as at June 2026 it has not been legislated. The current common-law tests above still apply in full. If you are planning a move on the assumption the new rules will operate, you are planning on uncertainty: the start date, the final design, and even whether the measure proceeds remain unconfirmed. Our advice is to assess your position under the current law and treat the proposal as a possible future change, not a present rule.

Worked example — the expat who never quite left

A Kingsgrove IT consultant takes a “two to three year” contract in Dubai on a tax-free salary of about AUD $180,000. He rents out his Sydney home, keeps his Australian bank accounts and private health cover, leaves furniture in storage, and flies back for six weeks a year. He assumes that because he is outside Australia for most of the year, he is a non-resident and the Dubai salary is tax-free.

The ATO is likely to disagree. His domicile is Australia, and his living arrangements in Dubai (employer-provided apartment, contract tied to a project, retained Sydney home) may not establish a permanent place of abode overseas. If he is a resident, the $180,000 is assessable in Australia each year — roughly $55,000 of tax annually, before interest and penalties if it surfaces in an ATO review three years later. The difference between that outcome and a clean non-resident position is largely in the steps taken before departure: the nature of the overseas lease, what happens to the family home, where the family lives, and how the return trips are structured. The facts decide it, and the facts are set early.

A Trinity insight from 22 years in practice

Residency disputes are won and lost on contemporaneous evidence, not arguments after the fact. In 22 years, every difficult residency case we have handled shared one feature: the taxpayer decided what their status was first and looked for support second. The clients who get clean outcomes do it in the opposite order — they sit down before the move, work through the four tests against their actual plans, and then arrange the lease, the home, the accounts and the travel pattern so the facts match the position they will file. Thirty minutes before departure beats thirty hours in an objection.

What this means for you

If you are moving overseas for work: do not assume departure makes you a non-resident. The domicile test is the hurdle — get advice before you leave, while the facts can still be arranged.
If you have migrated to Australia: you are probably a resident from arrival under the resides test, and your foreign assets received a market-value cost base on that date — record it.
If you hold a temporary visa: check whether the temporary resident concessions exempt your foreign income — many new arrivals over-declare.
If you work remotely from overseas for an Australian employer (or vice versa): source and residency rules interact with tax treaties — the answer is rarely intuitive.
If you have a HECS/HELP debt and live overseas: you still have ATO reporting obligations on worldwide income.
If you are waiting for the “new 183-day rule”: it is not law as at June 2026. File under the current tests.

How Trinity can help

Trinity Accounting Practice prepares residency assessments for departing expats, new migrants and returning Australians from our Beverly Hills office. We work through the four tests against your actual circumstances, document the position, handle part-year and temporary-resident returns, manage CGT event I1 elections on departure, and deal with the ATO if your residency is ever queried. Where tax treaties are involved, we coordinate the Australian position with your overseas adviser.

Book a residency review with the Trinity team →

General advice only. This article contains general information current as at June 2026 and does not constitute tax, financial or legal advice. It does not take into account your personal circumstances, objectives or needs. Before acting on any information in this article, you should consider its appropriateness to your situation and seek professional advice from Trinity Accounting Practice or another qualified adviser. Liability limited by a scheme approved under Professional Standards Legislation.