Ending Australian Tax Residency: CGT Event I1 Exit

The day you stop being an Australian tax resident, the ATO can hand you a capital gains bill on shares you still own. That is CGT event I1: a deemed disposal that values most of your portfolio at market on your departure date and taxes the unrealised gain, even though nothing actually left your brokerage account. For Australians planning a move to a 0% base like Paraguay, this one-time charge is the line that quietly wrecks otherwise careful budgets.

Nobody sends you an invoice at the airport. The cost surfaces later, in the tax return covering the year you cease residency, and by then the trigger date is fixed and the number is what it is. This guide walks through why leaving Australia is a taxable status change, how CGT event I1 works, which assets it catches, and the trigger-or-defer choice that decides much of the bill. Figures are approximate and current as of 2026; confirm your own position with the ATO or a registered tax agent before acting.

Dual Australian and US citizens: ending your Australian tax residency does nothing about the United States. US citizenship-based taxation follows you worldwide regardless of where you live, so you keep filing US returns on top of any Australian exit cost. Read our guide for US citizens on Paraguay taxes and take US-qualified advice separately.

Why Leaving Australia Triggers a Tax Event

Leaving Australia is not simply a change of address. When you cease to be an Australian tax resident, the tax system marks the moment as a status change with consequences, and the headline consequence is a capital gains event on assets you have not sold. The logic mirrors other deemed-disposal regimes: Australia wants to tax the growth that built up while you were resident, before you move beyond its reach.

This is why the exit cost is separate from anything your destination charges. Paraguay decides what you pay on future income once you arrive. Australia decides what your departure costs on the way out. Both numbers belong in the same plan, and treating a 0% destination as if it cancels the exit tax is the mistake that leaves people short.

The good news is that the charge is one-time and, with planning, often smaller than the fear of it. What it demands is attention before you go, not after, because timing and the elections you make on departure are where most of the money is won or lost.

The ATO Residency Tests Behind Ceasing Australian Tax Residency

Before CGT event I1 can fire, you have to genuinely cease being an Australian tax resident, and the ATO does not take your word for it. It applies several residency tests, and satisfying them means building a permanent home abroad, not merely boarding a flight. Departure without a real new base often leaves you resident in the ATO's eyes for the whole year.

The main tests are the ordinary "resides" test, the domicile and permanent-place-of-abode test, the 183-day test, and the Commonwealth-superannuation test. The domicile question is the sticky one, because a long-held Australian domicile can keep you resident until you show a settled, permanent home somewhere else. Our rundown of the 183-day rule explains why day counts alone rarely settle residency.

One caveat worth flagging: a statutory residency reform for Australia has been discussed for several years. Treat it as proposed and uncertain, not current law, and check the position that actually applies on your departure date rather than relying on a change that may never arrive.

CGT Event I1: The Deemed Disposal Explained

CGT event I1 is the mechanism that turns ceasing residency into a taxable moment. On the day your Australian tax residency ends, the law treats you as having disposed of each affected CGT asset at its market value, then recalculates the gain as if you had sold. You keep the asset; the tax system pretends, for capital-gains purposes, that you did not.

That deemed disposal produces a real, payable capital gain in the year you cease residency. If your foreign shares, ETFs, or crypto have appreciated substantially while you were resident, the paper gain becomes a genuine liability at the point of departure. Nothing needs to change hands for the bill to land.

Because the trigger is the market value on one specific day, the exact date you cease Australian tax residency carries real weight. A departure in a year of depressed valuations produces a very different figure from one at the top of a cycle, which is why the timing of your exit is a lever, not an afterthought.

Keep a clear record of the values you use. If the ATO later questions the year your Australian tax residency ended, contemporaneous valuations and a documented departure date are what turn a defensible calculation into an argument you can win. Reconstructing figures under audit is far weaker than capturing them as you go, so treat the paperwork around your cessation as part of the exit itself, not an optional extra to sort out later.

Which Assets CGT Event I1 Catches and Which Escape

The scope of CGT event I1 is defined by exclusion. It reaches every CGT asset you hold except "taxable Australian property", which stays inside the Australian net and is taxed only when you actually sell it, resident or not. Everything else is treated as disposed of the day your residency ceases.

• ▹Caught by CGT event I1 (deemed disposal on departure): foreign shares, ETFs and managed funds, foreign equities held inside an Australian brokerage account, foreign real estate, foreign business assets, cryptocurrency held as a CGT asset, and certain collectibles.
• ▹Excluded as taxable Australian property (taxed later, on actual sale): Australian real estate and interests in it, plus certain Australian business assets that stay connected to Australia.

The distinction surprises people who assume Australian real estate is the risky part. In fact the family investment property is generally the asset that stays taxable in Australia later, while the global share portfolio held through a local broker is the one hit on the way out. Map every holding to one side of this line before you set a date.

The Trigger-or-Defer Election Under CGT Event I1

The rules build in a genuine choice. Instead of applying CGT event I1 on departure, you can elect not to treat the affected assets as disposed of, and instead keep them inside the Australian CGT net. Nothing is taxed on your exit; the gain is only reckoned when you eventually sell, even years later as a non-resident.

The catch is that the election is all-or-nothing. You cannot trigger the gain on some parcels and defer others to suit your numbers. Every asset caught by event I1 is treated the same way, so a single decision covers the whole affected set. That makes the choice a portfolio-wide judgement rather than a line-by-line optimisation.

Each path carries a cost. Triggering now crystallises the tax while you still hold the resident-period discount and a known valuation. Deferring keeps cash in your pocket today but leaves those assets tethered to Australia and exposed to its capital-gains rules whenever you finally sell. Which is cheaper depends on your gains, your timeline, and where values are heading.

The 50% CGT Discount and the Non-Resident Catch

For assets you have held longer than twelve months, the 50% CGT discount generally still applies to the gain that CGT event I1 brings to account, at least for the portion that accrued while you were resident. That halving can make triggering the event on departure noticeably cheaper than it first looks, so run the discounted figure, not the headline gain.

The nuance sits with the deferral route. If you elect to keep assets in the Australian net and sell them later as a non-resident, the discount can be reduced or lost for the periods you were not an Australian tax resident. Deferring the tax can therefore mean surrendering part of the relief you would have kept by triggering the event on the day you left.

That trade-off is the quiet heart of the decision. The comparison is not simply "pay now" against "pay later"; it is a discounted bill today against a potentially larger, partly undiscounted bill down the track. Model both before you commit, ideally with a registered adviser.

Weighing trigger against defer? A short call maps your CGT event I1 exposure, the discount, and the timing against your actual holdings before you fix a departure date. Book a call.

How Paraguay Fits After You Cease Australian Tax Residency

Once you have genuinely ended your Australian tax residency and settled the exit position, the destination side becomes straightforward. Paraguay runs a territorial system, so foreign-source income is, in principle, not taxed locally. As a genuine Paraguay tax resident with income earned abroad, your effective rate on that income can sit close to 0%, well outside the Australian net.

The key is that CGT event I1 is a one-time cost at the border, not a recurring feature of life in Paraguay. Handle the deemed disposal or the deferral election cleanly on departure, and what follows is a low-tax base rather than an ongoing Australian liability. Our Paraguay 0% territorial tax guide sets out how the system treats foreign income.

Paraguay also does not demand year-round presence, which suits location-independent Australians. The country-specific practicalities, from the cédula to the on-the-ground steps, are covered in our guide for Australians moving to Paraguay. Pair it with the mechanics of a clean status change in how to break tax residency.

Planning the Exit From Australian Tax Residency

A well-planned exit turns CGT event I1 from a shock into a managed number. Start by listing every CGT asset and sorting it into caught or taxable-Australian-property, then get a defensible market valuation for the caught assets as at your intended departure date. Without those valuations, both the trigger figure and the deferral comparison are guesswork.

Next, model the two paths side by side: triggering the deemed disposal with the discount applied, against deferring and staying in the Australian net. Factor in where you expect values to move and when you realistically plan to sell. For a fuller picture of how departure charges shape timing across jurisdictions, our exit taxes by country breakdown sets the Australian rules in context.

Finally, lock in the genuine residency break. The election and the discount only matter if the ATO accepts that your Australian tax residency actually ended, which comes back to a real permanent home abroad and a clean severance of ties. Get the status change right first; the CGT arithmetic follows from it, and a rushed or paper-only departure can unravel the whole exit under later scrutiny.

Frequently Asked Questions About Australian Tax Residency

What triggers CGT event I1 when leaving Australia?

Ceasing to be an Australian tax resident triggers CGT event I1. On your departure date the ATO treats you as having disposed of most CGT assets at market value and taxes the unrealised gain, even though you sold nothing. Taxable Australian property is the main exception and is taxed later.

Which assets does CGT event I1 exclude?

CGT event I1 excludes "taxable Australian property", chiefly Australian real estate and certain Australian business assets, which stay in the Australian net and are taxed when you actually sell. Foreign shares, ETFs, foreign property, foreign business assets, and crypto held as CGT assets are caught by the deemed disposal on departure.

Can I defer the exit tax when I cease Australian tax residency?

Yes. You can elect not to apply CGT event I1 and instead keep the affected assets inside the Australian CGT net, paying only when you eventually sell. The election is all-or-nothing across every caught asset, and deferring keeps those holdings exposed to Australian capital-gains rules as a non-resident.

Does the 50% CGT discount apply to CGT event I1?

Generally yes, for assets held longer than twelve months, at least for the gain accrued while you were an Australian tax resident. That can substantially reduce the exit bill. If you instead defer and sell later as a non-resident, the discount may be cut or lost for non-resident periods.

How do I actually cease being an Australian tax resident?

The ATO applies several residency tests, including the resides, domicile, 183-day, and superannuation tests. Ceasing residency means genuinely establishing a permanent home abroad and severing Australian ties, not just leaving. Domicile is the hardest to shift, so keep evidence of your settled life in the new country.

How does Paraguay tax me after I leave Australia?

Once you are a genuine Paraguay tax resident and no longer an Australian tax resident, Paraguay's territorial system does not tax foreign-source income, so your effective rate on it can approach 0%. CGT event I1 is a one-time Australian exit cost, separate from Paraguay's ongoing treatment of your income.

Is the proposed Australian residency reform now law?

Treat it as uncertain. A statutory residency test for Australia has been discussed for years but should not be assumed to be current law. Rules can change before or after your departure, so confirm the residency tests and CGT event I1 mechanics that actually apply with the ATO or a registered adviser.

Planning your move to Paraguay? Our packages cover the Australian exit modelling and the Paraguay residency steps together, at a fixed and transparent fee, so both sides of the border are handled. See what the packages include.

Disclaimer: This article is general information, not tax or legal advice. Australian residency and CGT rules are technical and change, and CGT event I1 outcomes turn on your specific assets and timing. Have your position reviewed by a registered Australian tax adviser before you emigrate.