Deemed Disposal on Ceasing Residency: Should You Trigger a Capital Gain Now or Defer It?

When you leave Australia and become a non-resident for tax purposes, one of the most consequential — and misunderstood — tax decisions you’ll face is whether to trigger a deemed disposal of your CGT assets under section 104-160 of the ITAA 1997. This choice is made in your final tax return as a resident, not at the time of departure, and it has long-lasting effects. Even more critically — you must apply the decision to your entire portfolio of non-taxable Australian property (non-TAP). No cherry-picking allowed.

In this article, we’ll walk through how deemed disposal works, when it can benefit you (and when it might backfire), and how market timing, tax strategy, and exit planning all intersect.

What Is a Deemed Disposal?

Upon ceasing residency, the law treats you as having disposed of your non-TAP assets — typically:

• Australian and foreign shares (unless in land-rich companies),
• Units in managed funds,
• Cryptocurrency,
• Foreign private business interests.

You can either:

1. Elect to trigger deemed disposal

• A CGT event is recognised in your exit-year tax return.
• You pay tax upfront based on market value at the date you cease residency.
• You may still access the CGT discount for the period you were a resident (per s115-115).

2. Elect to defer the gain

• The asset remains within the Australian CGT net.
• You defer the taxing point until you sell the asset in future — even as a non-resident.
• The CGT discount is preserved for your resident days, but you’ll pay tax on all gains (including post-residency growth) when you eventually sell.

You Can’t Pick and Choose When it Comes to Deemed Disposal in Australia

If you elect to trigger deemed disposal, it applies to all your non-TAP assets. You can’t apply it selectively across your portfolio.

Want to crystallise a gain on one stock but defer the rest?
Then your only option is to actually sell the asset — and optionally repurchase it later.  To achieve a similar outcome to deemed disposal, this should be done near your departure date.

Strategic Considerations

 

 

 

 

Example of Growth Whilst Non-Resident

 

You bought international shares for $100k, now worth $200k at the time of residency cessation.  Assume they were held for more than 12 months, so prima facie eligible for the CGT discount.  If you:

• Elect deemed disposal:
  • You pay CGT now (e.g. your gross gain of 100k is reduced by 50% CGT discount to $50k, the tax on which is $15k assuming 30% effective rate).
  • If you sell in a few years when the value is $300k, you pay no additional tax in Australia (although it is essential you understand if your host country would tax this income).
• Elect deferral:
  • No immediate tax.
  • Future sale at $300k? You pay CGT on $200k gain (from $100k base), even though $100k accrued while non-resident.
  • The CGT discount can still apply but reduces for the period of non-residency, so perhaps your 50% discount reduces to 30% based on your facts, so your tax is:
    • Gross gain $200k
    • CGT discount 35% – net taxable gain is $130k.
    • Tax on this is $39k, assuming the income all falls within the 30% non-resident tax bracket.

Over time, the deferred gain exposes more to Australian tax — and without full CGT discount. However, if the market falls after departure, deferral becomes more favourable.

Example of Market Decline Non-Resident

 

• Purchase price: $100,000
• Value at departure: $200,000
• Value at return & sale: $80,000
• Holding period: ~6 years total (3 years resident before, 3 years non-resident)

Deemed Disposal:

• CGT triggered at departure on $100,000 gain
• 50% discount applies → Tax = $15,000
• Final sale value is $80,000, but you already paid $15,000 tax on a gain you never realised
• Net loss is locked in, and the future capital loss is disregarded under Australian rules

Deferral:

• No tax at departure
• At sale, you incur a $20,000 capital loss (from $100k cost base to $80k sale)
• That capital loss is recognised in Australia and can offset other capital gains
• No tax payable, and you preserve tax benefit

The graph illustrates this stark contrast:

• Deemed disposal locks in tax on the high point ($200k), and you end up worse off
• Deferral allows full recognition of the loss when sold, preserving deductibility and cash flow

This is a clear example of why deemed disposal can be risky in a falling market — particularly when the asset is volatile or has peaked near the time of exit. Let me know if you’d like a version combining rising and falling cases in one comparative graph.

What If You Return to Australia?

If you resume residency later, section 855-45 kicks in.

You are deemed to reacquire any non-TAP assets at their market value on the date you resume residency. This provides a new cost base, shielding non-resident-period gains from Australian tax. But it only applies if you deferred the deemed disposal — and only if the asset is still held when you return.

Timing is everything. Selling just before (or shortly after) returning can dramatically change the tax outcome.

Final Thoughts on Deemed Disposal Australia

The deemed disposal election is an important — and permanent — decision. It can either lock in your gains and sever future tax ties to Australia, or defer your obligations and expose you to a higher taxable base down the line.

And while it’s tempting to default to “do nothing and defer,” that can be costly if:

• The assets continue to appreciate after your departure;
• You don’t return to Australia;
• Or you misunderstand how the tax discount is applied.

Key Takeaways:

• The election applies to all non-TAP assets — no cherry-picking.
• Want to isolate tax outcomes? Sell individual assets before departure.
• Start planning before the financial year you intend to leave — not after.

Contact Us

If managing your financial affairs across borders is starting to feel overwhelming, you’re definitely not alone. It’s a complex space, and having the right support can make all the difference. At Atlas Wealth Group, we specialise in supporting Australian expats with cross-border tax planning, superannuation, and wealth management. Contact us to learn more about the deemed disposal on ceasing residency in Australia, or arrange a consultation with a qualified adviser who specialises in Australian expat financial planning to get personalised guidance tailored to your circumstances.

Stay updated on current issues with Atlas Wealth Groups’ podcast, Atlas Weekly Recap or check out Expat Chat.

 

 

Disclaimer: This article is intended for informational purposes only and does not constitute legal or financial advice. Individuals should consult licensed professionals when seeking guidance regarding their financial circumstances.