Moving overseas can change how Australia taxes your income, investments and family home. Getting the timing right, and planning before you leave, can help avoid unexpected tax outcomes.

Moving overseas involves plenty of planning, from employment and accommodation to schools and what to do with the family home.

One issue that should not be left until after departure is tax. Whether you cease to be an Australian tax resident, and what happens when you do, can depend on decisions made before you leave.

These five questions provide a practical starting point.

1. Will you actually cease Australian tax residency?

Leaving Australia does not automatically make you a foreign resident. Nor is there a simple rule that spending more than 183 days overseas ends Australian tax residency.

The answer depends on your overall circumstances, including where and how you live, the purpose and expected length of the move, your family and employment connections, the location of your assets and whether you establish a sufficiently settled home overseas.

Recent cases show how finely balanced the position can be.

In Quy v Commissioner of Taxation, the taxpayer lived and worked in Dubai for about five years. Although the Tribunal found that he did not reside in Australia under ordinary concepts, it was not satisfied that his permanent place of abode was outside Australia. The Federal Court upheld that conclusion under the separate domicile test.

By contrast, Bulie and Commissioner of Taxation concerned a taxpayer treated as resident in both Australia and Singapore under their domestic laws. Although his wife and child remained in Sydney, the Australia-Singapore tax treaty treated him as resident solely in Singapore, with his Singapore employment and income-producing activities carrying particular weight.

The cases are not inconsistent. They show that domestic residency and treaty residency are separate questions, and neither is determined simply by counting days.

Before leaving Document the intended length and purpose of the move, overseas employment and accommodation, family plans and expected visits to Australia. Your actions after departure should remain consistent with those plans.

2. Could leaving trigger tax before you sell anything?

Ceasing Australian residency can trigger an immediate capital gains tax event.

Broadly, assets that Australia will no longer have the right to tax may be treated as sold at market value when residency ceases. This can affect shares, managed investments and interests in private entities, resulting in tax even though no asset has been sold and no cash received.

It may be possible to disregard the immediate gain, but doing so can preserve Australia’s right to tax a later sale. The best option will depend on the unrealised gain, available cash, access to the CGT discount, future plans for the asset and its treatment in the destination country.

This can be particularly important for anyone leaving before 1 July 2027 because of the changes to the CGT discount from that date.

Before leaving Prepare an investment schedule showing cost bases, current values and unrealised gains. Consider each major asset separately rather than making one blanket decision.

3. What should you do with the family home?

The family home is often the largest tax risk.

A person who sells an Australian home while a foreign resident generally cannot claim the main residence CGT exemption unless a limited life-events exception applies. This can deny the exemption for the entire ownership period, not just the period spent overseas.

Selling before departure, keeping the property or waiting until Australian residency resumes can therefore produce very different results.

The familiar six-year absence rule should not be relied on without considering the separate restrictions applying to foreign residents.

The CGT discount is also changing from 1 July 2027. Broadly, the existing 50% discount is preserved for eligible gains that accrued up to 30 June 2027, while gains accruing after that date move into the new CGT regime. For someone who becomes a foreign resident before then, the position is more complicated because the existing rules already restrict the CGT discount for periods of foreign residency.

Before leaving Compare the after-tax outcomes of selling before departure, selling while overseas and selling after resuming Australian residency. If the home will be rented, consider obtaining a market valuation when it first produces income. The timing of departure and any later sale will become even more important from 1 July 2027.

4. Will your structures still work while you are overseas?

An international move can affect more than your personal tax position.

If you are involved in managing a family trust or private company, decisions made from overseas may affect the residency of the entity and the taxation of its income. Changing the formal trustee or directors may not be enough if the person overseas continues to make the key decisions.

Self-managed superannuation funds also require attention. Their central management and control must ordinarily remain in Australia, and separate rules apply to active members. The temporary absence concession for central management and control is generally limited to two years, which may not help with a long-term move overseas.

Before leaving Review trusts, companies, directorships, investment authorities and SMSF arrangements. Legal documents, external records and actual decision-making should all reflect what happens in practice.

5. How will both countries tax your income and assets?

Australian advice is only half of the exercise.

The destination country may treat Australian property, investments, superannuation, trusts and employee share interests differently. An Australian tax concession may be of little value if the other country taxes the same income or gain.

Payments made after departure also need careful analysis. For example, a bonus relating to work performed in Australia may remain taxable here even if it is paid after the employee has moved. A genuine relocation payment connected with a new overseas role may be treated differently. The commercial basis and supporting documents matter more than simply the payment date or bank account used.

Where both countries regard someone as resident, a double tax agreement may resolve residency and allocate taxing rights. Australia does not, however, have a comprehensive tax treaty with every country.

Foreign residents with substantial interests in Australian companies or trusts should also be aware of CGT changes that commenced on 1 October 2026. In particular, an interest can now be caught if the relevant company or trust was sufficiently exposed to Australian property at any time during the 365 days before disposal, rather than only at the time it is sold.

Other changes broaden the types of Australian property caught by these rules, including some interests connected with land, infrastructure and natural resources. These changes are unlikely to affect most individuals moving overseas but may be important for people with larger or less conventional Australian investments.

Before leaving Obtain advice in both countries, particularly where remuneration, asset sales or trust distributions may occur around the moving date.

Plan before, not after

Moving overseas does not require every Australian connection to be severed. It does require a clear plan that is then followed in practice.

Before boarding the plane, confirm:

  • your expected residency position and the evidence supporting it;
  • any departure CGT exposure;
  • the strategy for the family home;
  • whether trusts, companies and superannuation arrangements remain appropriate; and
  • how both countries will tax your income and assets.

Many adverse outcomes arise not from moving overseas, but from making an otherwise sensible decision in the wrong order.