Most of what an Australian expat saves or loses on tax comes down to a date rather than a rate. The day you leave. The day you sign a contract of sale. The day you come home. Put those in the right order, and the rules are manageable. Otherwise, you can lose an exemption you assumed was automatic or hand over a slice of a sale price you were counting on.
What is tax planning for expats, and why does it matter?
Tax planning for expats means deciding where you are tax resident, when to sell assets, and how to meet Australian obligations from overseas, before you move rather than after. Australian tax residency is not the same as citizenship, and the shift from resident to foreign resident changes your tax rate, capital gains concessions and Medicare levy.
The benefit is not a loophole. It is sequence. Several of the choices below stay open right up until the day you leave and then close behind you, and a few of them are expensive to reverse.
Residency decides almost everything.
The ATO applies four tests, and meeting any one of them makes you an Australian resident for tax purposes: the residence test, the domicile test, the 183-day test and the Commonwealth superannuation test. Your passport and your visa are not among them. An Australian citizen working in Singapore can be a foreign resident, and a foreign national living in Sydney can be an Australian resident.
| Status | What Australia taxes | Tax on the first dollar | Medicare levy |
| Australian resident | Worldwide income | Nil up to $18,200, then 15% | 2% |
| Foreign resident | Australian-sourced income only | 30% | Not payable |
| Temporary resident | Australian income and foreign employment income, with most foreign investment income exempt | Resident rates | Exempt in many cases |
On $60,000 of Australian rental income, a resident pays roughly $9,700 including the Medicare levy. A foreign resident pays $18,000 on the same income because the tax-free threshold and the 15% bracket are gone. That gap is the single largest number in most expat tax positions, and it is the reason residency is worth getting properly assessed rather than assumed.
You may also have read about a simpler system built on a 183-day bright-line test. It was announced in the 2021-22 Federal Budget and remains unlegislated, so the four tests above are what apply. Plan against the current law.
Do I still pay Australian tax if I live overseas?
Yes, if you have Australian-sourced income. Foreign residents pay Australian tax on Australian rent, Australian employment income and Australian business income at 30% from the first dollar, with no tax-free threshold and no Medicare levy. Foreign income sits outside the Australian net, though a HELP debt is still assessed on worldwide income.
Leaving triggers a capital gains decision.
When you stop being an Australian tax resident, the assets you hold that are not taxable Australian property are treated as sold at market value on that day. This is CGT event I1, and it covers share portfolios, ETFs and managed funds. Australian real estate is not included. Property stays in the Australian net no matter where you live.
You have a choice. Report the deemed gain in the return for the year you leave, where the 50% discount can still apply to the resident period, or elect to disregard the event and keep those assets inside the Australian system until you actually sell them.
Neither option is automatically better. Paying now can be a clean break, and the discount is often worth more while you are still a resident. Deferring suits someone who expects to return within a few years or who can’t fund the tax bill during a move. If there are losses already sitting in the portfolio, offsetting a gain with realised losses is worth looking at in the same conversation, since both sides of that calculation change once you leave.
Get market values documented on your departure date, not later. Reconstructing what a parcel of shares was worth three years ago, to the day, is the part that turns a simple election into an expensive exercise.
Is the family home still exempt when you sell from overseas?
Usually not. Foreign residents generally cannot claim the main residence exemption on property sold after 30 June 2020, even for a long-term home. A narrow life events test can preserve it where you have been a foreign resident for six years or less and a listed event occurs, such as a death in the family or a relationship breakdown.
What matters is your residency on the contract date, not the settlement date and not the years you lived there. Selling before you leave, or after you return and re-establish residency, produces a different result from selling from abroad. That makes timing the sale of an investment property or a former home one of the few genuinely large levers an expat still controls.
There is a second trap at settlement. Since 1 January 2025, foreign resident capital gains withholding applies to every Australian property sale with no minimum value, and the rate is 15% of the sale price. Australian residents avoid it by giving the buyer an ATO clearance certificate before settlement. Foreign residents cannot get one, but can apply to vary the amount withheld where the tax on the sale will be lower than 15% of the price. Without a variation, that money sits with the ATO until you lodge.
The obligations that follow you overseas
A HELP debt does not pause when you board the plane. If you intend to live overseas for 183 days or more in any 12-month period, you must notify the ATO within 7 days of leaving, then report your worldwide income by 31 October each year. Compulsory repayments start once that income passes $69,528 for 2026-27, and the balance is indexed on 1 June regardless of where you live or whether a repayment was raised.
Super stays put and stays locked until you meet a condition of release. A self-managed super fund (SMSF) needs more care because its central management and control has to remain in Australia, with a safe harbour for temporary absences of up to two years. A fund that fails the residency tests can lose its complying status and be taxed at the top rate, which is why some departing trustees appoint an Australian resident under an enduring power of attorney or move the balance to an APRA-regulated fund before they go. It is worth reviewing alongside how super fits into a longer retirement plan rather than as a standalone compliance job.
Double tax agreements help, but they rarely mean no tax. They allocate taxing rights between the two countries and, for Australian residents, the foreign income tax offset credits foreign tax against the Australian liability on the same income. Mismatched tax years are the practical headache: the United Kingdom runs to 5 April and the United States to 31 December, so the income in one return rarely lines up neatly with the other. Both sets of records the ATO can check years later need to be kept in a form that reconciles.
When planning pays off most
Four moments carry more weight than the rest:
- Before you sign the overseas contract. Residency, the timing of a property sale and the CGT election are all still open at this point. Most of them are not, six months later.
- In the weeks before departure. Valuations, a clearance certificate if you are selling, and a decision on any SMSF.
- The year you sell an Australian asset. Contract date, withholding and the exemption position all land together.
- The year you return. Residency restarts, worldwide income comes back into scope, and assets you deferred under the I1 election come back into play.
Work out which of those four you are closest to, and get advice on that one first. If you are already overseas and behind on lodgements, lodging your Australian tax return from overseas is usually the fastest way to work out where you stand before the next 31 October comes around.
This article is general information and does not take your circumstances into account. Residency outcomes turn on individual facts, and rules and thresholds change, so confirm your position with a registered tax agent before acting.