Australian Expat Tax: The Essentials, Explained Without the Jargon

Tax is nobody’s idea of a good time, and cross-border tax is the part where people quietly give up and hope for the best. Don’t do that. The hoping-for-the-best strategy has a remarkable track record of turning a small, fixable question into an expensive, awkward one a couple of years down the track. The good news is that the core ideas aren’t actually that hard once someone lays them out in plain English, which is what this guide is for. Think of it as the map of the territory; we’ll point you to the detailed guides for each region as we go.

Here’s the single most important thing to understand before anything else: your tax outcome as an Australian overseas hangs almost entirely on two questions. Are you still an Australian tax resident? And where is each piece of your income sourced? Get those two straight and the rest follows. Get them muddled and nothing downstream will make sense. So let’s start there.

Everything starts with residency

The first myth to bury: leaving Australia does not automatically make you a non-resident for tax. There’s no rule that says “wheels up, tax problem gone,” and there’s no magic two-year mark either. Your Australian tax residency is a question of fact, decided by a set of tests applied to your actual circumstances, not by how long you’ve been away or which stamps are in your passport.

Australia uses four residency tests, and satisfying just one makes you a resident: the ordinary “resides” test (the main one, looking at the whole shape of your life and ties), the domicile test, the 183-day test, and a narrow Commonwealth superannuation test for certain government employees. Genuinely breaking residency means genuinely cutting your ties, not just buying a one-way ticket. Because this single question drives everything else, it’s the one worth getting right first, and we’ve devoted a whole guide to it: start with being an Australian resident for tax purposes.

Why does it matter so much? Because of one simple rule with big consequences. If you remain an Australian tax resident, Australia generally assesses you on your income from all sources, Australian and foreign. If you genuinely become a non-resident, Australia steps back and generally taxes only your Australian-source income. Same person, wildly different tax bills, depending entirely on which side of that line you’re on.

The other half of the puzzle: where your income comes from

Once residency is settled, the next question is the “source” of each type of income, because for a non-resident, that’s what determines whether Australia gets a slice. The principle is straightforward: income that is Australian-sourced is generally taxable in Australia regardless of where you live. The classic example is rent from an Australian property; the property sits here, the income is sourced here, so Australia taxes it whether you’re in Sydney or Stockholm.

But (and this is where people are pleasantly surprised) not all Australian income is treated the same way for a non-resident. Some types are taxed through a final withholding system rather than your tax return. Interest and the unfranked part of dividends paid to a non-resident are generally subject to a final withholding tax, after which they’re treated as “non-assessable non-exempt” income, meaning you often don’t even include them in an Australian return. Fully franked dividends paid to a non-resident generally aren’t taxed further either (though the franking credits aren’t refundable to you). And here’s a big one people miss: ordinary shares in Australian companies are generally not “taxable Australian property,” so a non-resident typically pays no Australian capital gains tax when selling them. That is a genuinely useful quirk for non-residents holding Australian shares, and one of the more pleasant surprises in the rulebook.

The rates: what non-residents actually pay

This is where the old advice floating around the internet is often simply out of date, so here are the current numbers. For the 2025-26 year, a foreign resident is taxed at 30% on the first $135,000 of Australian taxable income, 37% from $135,001 to $190,000, and 45% above $190,000. (You may still see “32.5%” quoted as the bottom rate in older material; that changed to 30% from 1 July 2024 with the Stage 3 cuts, so treat any “32.5%” you read as a warning sign that the source is stale.)

Two features of the non-resident rules bite hard, and they’re worth saying plainly. First, non-residents get no tax-free threshold. A resident pays nothing on their first $18,200; a non-resident pays 30 cents in the dollar from the very first dollar of Australian taxable income. Second, the flip side, which softens the blow a little: foreign residents don’t pay the 2% Medicare levy, because they’re not entitled to Medicare. So it’s not all one-way traffic, but for most income levels the loss of the tax-free threshold is the bigger effect. (For completeness: resident rates for 2025-26 run nil up to $18,200, then 16%, 30%, 37% and 45%, plus the Medicare levy. The 16% bracket is legislated to drop to 15% from 1 July 2026 and 14% from 1 July 2027.)

Deductions: the rule that trips people up

Here’s a logical trap worth understanding, because it catches people who think becoming a non-resident is all upside. Australian tax deductions follow the income they relate to. If a type of income is no longer assessable to you (because, say, it’s been taxed via final withholding and is now non-assessable non-exempt), then you generally can’t claim deductions for the expenses you incurred in earning it. You don’t get to keep the deductions while shedding the income; the two travel together. For income that does remain assessable here (like your Australian rental income), the normal deduction rules continue to apply, so you can still claim genuine expenses against that rent.

Your foreign income, and the country you’ve moved to

If you’ve genuinely become a non-resident, the relief is real: your foreign income (your overseas salary, your foreign investments) is generally not taxable in Australia at all. Australia has stepped back. But don’t celebrate too early, because the country you’ve moved to has its own ideas. You’ll usually need to work out whether you’re a tax resident there, whether you must register and lodge locally, and how that country taxes you. Some countries tax your worldwide income (in which case your Australian rental income might need to go on your return over there too), while others tax only locally-sourced income. Those are their rules, administered by their tax authority, and they change often, so local advice in your new country is worth having alongside your Australian advice.

It’s also worth knowing that you can be a tax resident of two countries at once under their respective domestic rules. That’s not a disaster; it’s a recognised situation, and it’s exactly what tax treaties are built to sort out.

Tax treaties: the referee between two systems

Australia has tax treaties (formally, double tax agreements) with more than 40 countries. They do two main jobs. First, they allocate taxing rights over different categories of income between the two countries, so the same dollar isn’t fully taxed twice. Second, where you’d otherwise count as a resident of both countries, the treaty contains a “tie-breaker” that assigns you to one country for treaty purposes.

Two important caveats, because treaties are widely misunderstood. The tie-breaker decides residency “for treaty purposes” only; it doesn’t automatically rewrite your domestic residency or wipe out your filing obligations, it allocates taxing rights. And the tie-breaker tests aren’t identical from treaty to treaty; the order and the steps genuinely differ between countries, so you can’t assume the version you read about for one country applies to yours. Where income is still taxed by both sides, the foreign income tax offset generally gives Australian residents a credit for foreign tax paid (up to the Australian tax on that income), which is the mechanism that prevents genuine double taxation. It’s helpful, but it’s a credit with limits, not a magic eraser.

So where does that leave you?

If you take one thing from all this, make it the order of operations. Work out your residency first, because it changes everything. Then sort each type of income by its source, and check how the non-resident rules (the rates, the withholding treatment, the deductions principle) apply to each. Layer the destination country’s rules on top, and let the relevant tax treaty referee any overlap. It’s methodical rather than mysterious, and most expat tax disasters are simply one of those steps skipped.

From here, you can go deeper wherever you need to: a popular-destination example in our guide to the top US tax issues for Australian expats, the rules on selling a former home in our main residence and six-year-rule guide, and how tax authorities now share information across borders in our guide to the Common Reporting Standard and Australian expats. The map is the same; you just zoom in.

Moving overseas, or already there?

This is exactly what we do, all day, every day. We help Australians work out their residency, sort their income by source, get the non-resident rules right, and coordinate everything with the country they’ve moved to so nothing falls down the gap between two tax systems. We work remotely with expats all over the world, and our fee is always an upfront quote.

Book an appointment with our specialist team today, ideally before you move rather than after. A short chat now can save a world of bother later.

General information only. This article doesn’t consider your personal circumstances and isn’t tax or financial advice. Tax rates, thresholds and rules change, some measures referred to are proposed but not yet law, and the tax rules of other countries are administered by those countries’ own authorities and change frequently. Your outcome depends on your specific circumstances and your residency. Speak to our specialist expatriate tax team today, or to another registered tax agent, before acting.