Leaving Australia: residency, the CGT departure choice, and what follows you

Why this corridor needs a guide. Australians leave in large numbers — to the UK, the Gulf, Singapore, the US — and the departure rules are unusually decision-heavy: the day you cease residency, the law deems you to have sold your non-property assets (unless you choose otherwise), your family home quietly loses its lifetime tax exemption if you sell while away, the tax-free threshold disappears for the Australian income you keep, and your HECS debt starts chasing your foreign payslip. None of these are avoidable by ignorance and all of them are manageable by sequencing. Our own connector data shows capital-gains questions from Australia going unanswered more than almost anywhere — this Guide is the answer's backbone.

Who it's for. Australian residents (citizens and long-term residents) moving abroad, and their accountants. Rules stated for the 2025-26 income year; the residency-law modernisation announced years ago (the 45-day bright-line proposal) remains unlegislated — the old tests still govern, but watch this space before relying on edge cases.

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Part 1 — Ceasing residency: the four tests, and the evidence

You remain an Australian tax resident until you fail all four tests:

1. The resides test — ordinary meaning: where your life actually is (home, family, possessions, routines).
2. The domicile test — an Australian-domiciled person stays resident unless they establish a permanent place of abode overseas. Case law (Harding) settled that a long-term apartment in one overseas city can qualify — serial short stints and hotel living do not. This is the test that decides most genuine leavers.
3. The 183-day test — mostly catches arrivals, not leavers.
4. The Commonwealth super test — government employees, niche.

What the ATO actually weighs: a one-way move with a lease/purchase abroad, family along, Australian home sold or let on arm's-length terms, memberships closed, car sold, mail redirected — versus a "gap year with a return ticket". Cessation is a date, not a year-end: your final return splits the year at that date (part-year tax-free threshold applies), and everything in Parts 2–4 keys off it. Document the date's evidence the week you fly, not three years later in an audit.

Non-resident rates from day one after cessation: Australian-source income is then taxed with no tax-free threshold — 30% from the first dollar up to $135,000, then 37%/45% (and no Medicare levy). The same salary, rent or one-off consulting fee is taxed very differently either side of the cessation date — which is itself a planning lever for bonuses and invoice timing.

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Part 2 — CGT event I1: the deemed disposal, and the election

The centrepiece. On ceasing residency, CGT event I1 deems you to dispose of all your CGT assets except taxable Australian property (TAP) — broadly, Australian real estate and mining interests, plus significant stakes (10%+) in land-rich entities — at market value on the cessation date. Your share portfolio, managed funds, foreign assets, crypto: all deemed sold, gains taxable in your final resident return, without any cash changing hands.

The election (the "I1 choice"): you may instead elect to treat those assets as TAP — deferring tax until actual sale, but keeping those assets inside the Australian CGT net while non-resident, with two costs baked in:

• the 50% CGT discount is frozen for periods of foreign residency (post-May-2012 apportionment), so long absences erode the discount on eventual sale; and
• Australia taxes the entire eventual gain, even growth that happened while you lived in a country that would not have taxed it.

How to choose, honestly:

Situation	Lean
Large unrealised gains, no cash to pay a dry tax bill	Elect (defer) — but diarise the discount erosion
Modest gains, or losses available to absorb them	Pay on I1 — a clean exit; future growth is Australia-free
Moving to a zero-CGT country (UAE, Singapore, NZ for most assets) long-term	Pay on I1 — post-departure growth then escapes both countries
Likely to return within a few years	Election matters less — returning residents' assets re-enter the net anyway; model both

There is no single right answer; there is a right process — a market-value schedule of every asset on the cessation date (you need it under either path), then the two computations side by side. The election is made by how you complete the return, so the decision belongs to the departure-year filing, not to memory.

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Part 3 — The house: the main-residence exemption ambush

The harshest rule on this corridor, and the least known: since the 2019 changes, a person who is a foreign resident at the time they sell their former Australian main residence gets no main-residence exemption at all — not a reduced one; none, reaching back over the entire ownership period. The narrow "life events" carve-out (death, terminal illness, divorce within a 6-year window) rarely helps a planned move.

The sequencing consequences:

• Selling? Sell while still resident (contract date governs), or move back into residency before selling. The same sale, contracted a month after cessation, can swing from tax-free to a six-figure CGT bill.
• Keeping and renting it out? The old 6-year absence concession only pays off if you are resident again when you eventually sell. Get a valuation at first rental (the home-first-used-to-produce-income rule resets the cost base) and hold the evidence.
• Any sale as a non-resident also meets foreign-resident capital gains withholding — the purchaser withholds 15% of the price (threshold removed from 2025 — it applies to effectively all Australian property sales by foreign residents) — recovered, if excessive, only through the return.

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Part 4 — What follows you abroad

• HECS/HELP debt does not stay home. Moving overseas obliges you to notify the ATO (myGov), lodge an overseas travel notification, and report worldwide income annually; repayments apply once income crosses the repayment threshold, computed on your global earnings. Silence compounds into penalties; the debt also now accrues indexation against you while you ignore it.
• Superannuation is a one-way lockbox. Citizens and permanent residents cannot withdraw super on departure (the DASP refund exists only for temporary-visa holders). The balance stays invested under Australian rules until preservation age. Planning notes: consolidate before leaving, check insurance inside super (often lapses or becomes poor value for non-residents), be careful with SMSFs — a trustee moving abroad can break the fund's Australian-residency conditions and render it non-complying (penalty tax at the top rate on the fund); professional trustees or winding up are the standard fixes.
• Australian-source income keeps its own rules: rent (taxable by assessment at non-resident rates; negative-gearing losses carry forward), fully franked dividends (no further Australian tax for non-residents — franking does the job; unfranked: 30% withholding, treaty-reduced), interest (10% final withholding). Bank and broker paperwork: update tax-residency declarations so the right withholding applies at source.
• Employee share schemes straddling the move are apportioned between countries by sourcing rules — flag any unvested equity to both ends' advisers before the move; the deferred-taxing-point rules interact badly with surprise.

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Part 5 — The destination layer (briefly)

Australia has treaties with the major destinations (UK, US, Singapore; none with the UAE — double-non-taxation is the point there, but also no treaty tie-breaker if statuses collide). Two destination-specific notes our corridor data keeps surfacing:

• AU→UK: the UK taxes arrivals under its own SRT from day one; the old remittance basis is gone (FIG regime now — 4 years of foreign-income relief for genuinely new arrivals). Australian franked dividends lose their magic in UK hands; super interacts with UK pension rules unglamorously. Sequencing bonuses and I1 decisions around the UK arrival year is standard.
• AU→UAE/Singapore: no local tax on the salary; the whole game is the Australian exit done cleanly (Parts 1–4) — and evidence, because a "permanent place of abode" in Dubai is exactly what the domicile test wants to see documented.

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Part 6 — Sequenced checklist

Before the move

1. Build the residency-cessation evidence plan (lease/purchase abroad, family, home let/sold arm's-length, closures) and pick the intended cessation date.
2. Market-value every CGT asset for that date; run the I1 pay-vs-elect comparison.
3. Decide the house strategy while still resident: sell now (exempt), or rent with a first-income valuation and a documented plan for the eventual sale.
4. Time income: bonuses/invoices before cessation use the resident thresholds; after, 30% from dollar one.
5. Super: consolidate, review insurance, fix SMSF trusteeship.

Departure year 6. Final part-year return: cessation date declared, I1 position taken, market-value schedule retained. 7. ATO overseas-travel notification for HECS; diarise the annual worldwide-income report. 8. Update banks/brokers/registries to non-resident withholding status.

While away 9. File Australian returns whenever Australian-source assessable income exists (rent, most commonly); watch the 15% purchaser-withholding on any property sale. 10. Before any return to Australia: assets acquired abroad enter the CGT net at market value on resuming residency — realise or re-base deliberately, and re-run the house plan if it was rented out.

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The trap list

Trap	Why it bites
"I'll figure out I1 later"	The deemed disposal happens at the cessation date by law; the only question is whether you computed it. Un-elected and unreported is an audit, not a strategy.
Selling the family home from abroad	Main-residence exemption vanishes entirely for foreign-resident vendors — the single most expensive surprise on this corridor.
Electing deferral, forgetting the discount freeze	Years abroad shave the 50% discount on eventual sale; the deferral isn't free.
SMSF trustee on a plane	Residency conditions breach → non-complying fund → top-rate tax on the fund's assets.
HECS silence	Worldwide-income reporting is mandatory; the debt indexes and penalties accrue while you look away.
Bonus paid a week after cessation	Non-resident rates from the first dollar; timing was worth thousands.
Assuming a UAE treaty exists	There is none — no tie-breaker to rescue a messy dual-status year.
Returning with an offshore portfolio, no re-basing plan	Market-value entry on resuming residency is automatic; realising gains just before return (in a zero-tax country) versus just after is a five-figure difference.

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Sources (primary, verify current figures)

ITAA 1997 s.104-160 (CGT event I1) and the TAP definition (s.855); ATO guidance on residency (TR 2023/1, incorporating Harding); main-residence exemption denial for foreign residents (2019 amendments + life-events test); 50% discount apportionment for foreign residents (post-8 May 2012); foreign-resident capital gains withholding (15%, threshold removed from 1 Jan 2025); non-resident tax rates 2025-26; HECS/HELP overseas obligations (ATO overseas levy); DASP rules (temporary residents only); SMSF residency conditions; franking/withholding treatment of non-resident investors; Australia's treaty network (and the absence of an AU–UAE income-tax treaty); UK FIG regime for the AU→UK leg.

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Built for the OpenAccountants migration desk. Leaving Australia is a set of decisions with dates attached — the I1 choice, the house, the bonus, the SMSF — and every one of them prices differently on either side of a single cessation date. Fix the date, then sequence everything around it, with a named accountant on each end.