Living in Thailand: The Tax Reality for Australian Expats

Thailand has earned its “Land of Smiles” nickname, and it’s no mystery why so many Australians end up there: warm weather, world-class food for the price of a servo pie, and a cost of living that makes your Aussie salary feel like a lottery win. Whether it’s Bangkok, Chiang Mai or a beach in Phuket, plenty of Aussies are making the move.

And then, somewhere between the second mango sticky rice and the first tax season, reality knocks. Because moving to Thailand doesn’t make tax disappear. It just means two countries might now be interested in your money: Thailand, and the one you left behind. Let’s walk through both, because there’s one Thai rule in particular that’s changed dramatically, and the old advice on it is now downright dangerous.

First, an important warning about old advice

If you’ve been reading older guides about Thai tax, you’ll have seen a “clever trick”: earn foreign income, don’t bring it into Thailand until a later year, and it’s tax-free forever. For years that genuinely worked. It does not work anymore, and relying on it now can land you with a real tax bill and penalties. We’ll get to exactly what changed in a moment, because it’s the single most important thing in this article.

Are you a tax resident of Thailand?

Here’s the first thing to clear up, because the old “permanent residency” idea trips people up constantly. Thai tax residency has nothing to do with immigration permanent residency (the famously hard-to-get status capped at a tiny number of people per country each year). For tax, it’s far simpler and based purely on time.

Under Section 41 of the Thai Revenue Code, you’re a Thai tax resident for a year if you’re physically present in Thailand for 180 days or more during that calendar year. It doesn’t matter what visa you hold, or whether you hold one at all. Stay 180 days or more, and Thailand treats you as a tax resident. Stay fewer, and you’re a non-resident for that year.

Why it matters: tax residents are taxable in Thailand on Thai-source income, and on foreign-source income they bring into Thailand (more on that crucial point below). Non-residents are only taxed on income from sources within Thailand.

Remote work from Thailand: not automatically “foreign” income

Digital nomads need to be careful here, because if you’re physically doing the work in Thailand, the income may not be as foreign as you think.

Thai tax law taxes income from employment or business carried on in Thailand whether the money is paid in Thailand or offshore. So an Australian salary paid into an Australian bank account doesn’t automatically stay outside Thailand if the work is actually being done from a Bangkok apartment or a Chiang Mai co-working space. The treaty may help, the facts may help, and a particular visa may help, but “my client is overseas” is not a complete tax plan. It’s a sentence, and sometimes an expensive one.

The big change: Thailand’s foreign income remittance rule

This is the one that rewrites the old playbook. For years, Thailand only taxed foreign income of a Thai tax resident if it was brought into the country in the same year it was earned. Bring it in a later year, and it often escaped Thai tax. That was the little “planning trick” every old guide loved. It is now dead, buried, and not forwarding mail.

From 1 January 2024, Departmental Instruction Por. 161/2566 changed the Revenue Department’s interpretation. In broad terms, foreign-source income earned from 1 January 2024 by a Thai tax resident can be taxed when it’s brought into Thailand, even if it’s brought in during a later year.

So the key questions aren’t just “when did I remit the money?” but also “when was the income earned?”, “was I a Thai tax resident in that year?”, “what type of income was it?”, “does a treaty change the result?”, and “can I prove the source and timing?” Tax law loves receipts. It’s less fond of vibes. Importantly, don’t reduce this to “it’s only taxable if I’m Thai-resident in the year I bring it in,” because that isn’t a safe reading of the rule. The year the income was earned, and your residency in that year, matter just as much as the year you remit.

Income genuinely earned before 1 January 2024 is treated differently, under a separate instruction (Por. 162/2566). Those pre-2024 savings can generally still be brought into Thailand without Thai tax under the new interpretation, provided you can prove when the money was earned. So keep your old bank statements, brokerage statements and payslips. Future you won’t remember which account held what in December 2023.

Be careful with the word “remit,” too. A bank transfer into Thailand is the obvious case. ATM withdrawals on a foreign card, credit-card spending in Thailand, or paying Thai living costs from offshore funds are more fact-sensitive, and exactly the sort of thing to check with a Thai adviser rather than assume. The conservative planning view is simple: if foreign income is funding your Thai life, don’t assume the Revenue Department will politely look away.

One more thing to watch, because it’s very current. There’s been an official proposal to soften the rule, broadly exempting foreign income remitted in the year it’s earned or the following year. As at June 2026 that’s a proposal, not law, and it hasn’t been enacted. So plan around the rule that actually exists today, not the one that might arrive later. Planning your finances around an unpassed law is a good way to be wrong expensively.

Important caveat: some LTR visa holders have a separate exemption

There’s one significant exception to the warning above. Certain Long-Term Resident (LTR) visa holders can qualify for a separate Thai tax exemption on foreign-sourced income brought into Thailand, granted under Royal Decree No. 743. Because a Royal Decree outranks a Departmental Instruction in the Thai legal hierarchy, that exemption survived the 2024 remittance change intact.

This is not a general “expat exemption.” It doesn’t apply just because you hold a long-stay visa, a retirement visa, a Destination Thailand Visa or a Thailand Privilege card. It’s limited to specific LTR categories (broadly the Wealthy Global Citizen, Wealthy Pensioner and Work-from-Thailand Professional streams) and only where the conditions are met. The upshot: in Thailand, your visa type is now part of your tax planning. Same beach, very different tax bill.

What Thai tax looks like

If you’re a Thai tax resident, personal income tax is progressive, running from 0% up to 35%. The brackets (in Thai baht) broadly are: nil up to 150,000; 5% to 300,000; 10% to 500,000; 15% to 750,000; 20% to 1,000,000; 25% to 2,000,000; 30% to 5,000,000; and 35% above 5,000,000. There are also deductions and personal allowances that come off your assessable income before the rates apply, so the effective rate is usually lower than the headline suggests.

Non-residents (fewer than 180 days) are taxed only on Thai-source income. The Thai tax year is the calendar year, and the annual personal income tax return is generally due by 31 March of the following year for paper filing, with a short online extension usually available. Individuals with certain business income may also have a mid-year filing obligation around 30 September. Late payment can bring penalties and surcharges, so this isn’t a deadline to leave to “future me.”

Thai tax administration has its own registration steps, documentation expectations and quirks, and the foreign-income rules in particular are still settling down. This is firmly an area for a local Thai tax adviser, rather than a forum thread from 2019.

Social security and the Provident Fund

If you’re formally employed in Thailand, you’ll generally be brought into the Thai Social Security system. From 2026, the standard employee and employer contribution rate remains 5% each, but the monthly wage ceiling rose to THB 17,500, making the maximum ordinary contribution THB 875 each for employee and employer.

Many employers also offer a Provident Fund, a voluntary employer retirement arrangement. Employee and employer contributions are commonly matched or partly matched, contributions can attract Thai tax relief within limits, and the fund’s earnings receive concessional treatment. The catch is vesting: leave too early and the employer-contributed portion may wave goodbye from the platform. Genuine digital nomads working only for foreign employers may sit outside the ordinary Thai payroll and social security system, but don’t guess, your visa and work arrangement matter.

Other Thai taxes worth knowing about

Beyond income tax, a few others can touch expats. Treat this as a heads-up, not a substitute for Thai legal advice:

• Property: Thailand’s old house-and-land tax was replaced by the Land and Building Tax regime from 2020, which taxes property based on appraised value, with rates depending on use (residential, agricultural, commercial or vacant land).
• Transfer costs: buying and selling property can bring transfer fees, stamp duty, withholding tax and, in some cases, a specific business tax. The headline purchase price isn’t the whole cost. It rarely is.
• Inheritance and gifts: Thailand has both, with high thresholds. Inheritance tax generally starts above THB 100 million from each testator, and gift-tax thresholds commonly run to THB 20 million (close family) or THB 10 million (others) a year. Most people won’t hit these, but high-net-worth expats should check.

Foreign ownership of Thai land is also heavily restricted, which trips up a lot of Australians expecting to buy a house the way they would back home. That’s more a legal question than a tax one, but worth flagging before you fall in love with a villa and start mentally naming the dog.

Now the half everyone forgets: your Australian tax position

Here’s where Australians in Thailand most often come unstuck. Moving to Thailand does not automatically make you a non-resident for Australian tax purposes. Australia decides your residency under its own rules, and they’re genuinely hard to shed. If you keep meaningful ties to Australia (a home you can return to, family, an intention to come back), you may remain an Australian tax resident the whole time you’re away.

That matters because an Australian tax resident is generally taxed on assessable income from all sources, whether in Australia or overseas. A foreign resident is generally taxed only on Australian-source income and certain amounts that stay in the Australian net, such as Australian rental income, taxable Australian property gains and some withholding-taxed payments. So your residency status drives everything, and it’s the first thing to nail down. We explain how it’s decided in our guide to being an Australian resident for tax purposes.

You can also end up a tax resident of both countries at once, which is what the Australia-Thailand tax treaty exists to referee. It has tie-breaker rules (for the treaty’s purposes) to decide which country treats you as resident, and separate rules allocating taxing rights over different types of income. Used properly, the treaty and the foreign income tax offset rules can reduce or relieve double tax. Ignored, they do nothing, because nobody applies the treaty for you while you’re ordering another coconut.

Leaving Australia can trigger an exit tax

Before Thailand even gets a proper turn, Australia may have a parting gift. When you cease Australian tax residency, CGT event I1 can treat you as having disposed of many of your non-taxable-Australian-property CGT assets at market value on the day you leave. Shares, ETFs, crypto and foreign assets can all be in the calculation.

You can generally choose to disregard the deemed gain or loss, but that choice keeps the relevant assets inside the Australian CGT net until you actually sell them or become an Australian resident again. It’s also not usually an asset-by-asset buffet, the choice applies to the assets covered by the event, not just the winners you’d like to defer. Either way, it’s a decision to model before you go, not after the plane lands in Bangkok and you’ve already bought the good sandals.

A correction on the 50% CGT discount

Older guides cheerfully tell Australians in Thailand that the 50% capital gains discount still applies to them. Be careful, because that’s no longer the simple truth it once was.

Under the current rules, the full 50% discount has not been available for foreign-resident periods since 8 May 2012. If you make a capital gain while you’re a foreign resident, or across a period that includes foreign-resident time, the discount can be reduced or lost for that period. So whether you get the half-price treatment depends on your residency through the ownership period, not just on holding the asset for 12 months.

There’s also a new wrinkle on the horizon. The 2026-27 Federal Budget proposed replacing the 50% CGT discount with inflation-based indexation and a minimum 30% tax rate on capital gains accruing from 1 July 2027. Bills have been introduced, but the final law should still be checked before relying on it. For large gains, this isn’t background noise, it’s the drumbeat. We cover it in our 2026 Budget guide for expats.

Your Australian home can be a quiet tax grenade

If you keep your Australian home and rent it out while living in Thailand, don’t assume the old “six-year rule” automatically saves you from capital gains tax.

The six-year absence rule can still help if you sell while you’re an Australian tax resident and the usual conditions are met. But if you sell while you’re a foreign resident, the main residence exemption is generally denied, unless a narrow life-events test applies. For ordinary post-CGT property, that can mean Australian CGT across the whole ownership period, even if the place was your actual home for years. The contract date matters, and your tax residency on that date matters. Your memories of the backyard barbecue, sadly, don’t do the tax return. We cover this in our guide to the main residence exemption and the six-year rule for expats.

Don’t get taxed twice: the foreign income tax offset

If you do end up an Australian tax resident paying Thai tax on income that’s also assessable in Australia, you’re not necessarily paying two full lots. Australia’s foreign income tax offset (FITO) may let you claim eligible Thai tax against your Australian tax on the same income. It’s relief from double taxation, not a free pass: above $1,000 you have to work out the offset limit, and any excess foreign tax isn’t refunded or carried forward. The treaty and the FITO rules work together, but only if your income, tax paid and residency are lined up properly.

The bottom line

Thailand is a wonderful place to live. It is not a tax-free one, and the old “just wait a year before bringing the money in” trick is dead, so don’t build a plan on it. Treat your move as a two-country tax question from day one. Work out whether Thailand sees you as a tax resident (the 180-day line), whether your income is Thai-source or foreign-source, whether any foreign income was earned before or after 1 January 2024, and whether an LTR exemption or treaty rule changes the result.

Then do the Australian half, because that’s the part people miss and it’s usually the more expensive surprise. Australian residency, CGT event I1, the reduced CGT discount, your Australian home, the treaty and the foreign income tax offset all need lining up before you go. Use a local Thai adviser for the Thai side, and get your Australian position sorted before you board the plane. Do that, and you can enjoy the pad thai with a clear conscience. Wing it, and the bill tends to find you eventually, usually with terrible timing.

Chasing the Thailand dream with an Australian tax tail?

We’re Australian tax specialists, so our lane is your Australian side: whether you’re still a tax resident, the CGT exit rules, what happens to your Australian property, shares and super, and how the Australia-Thailand treaty and the foreign income tax offset apply to you. For the Thai-side detail you’ll also want a local Thai tax adviser, and we’re glad to work alongside one so nothing slips through the gap.

Book an appointment with our expat tax specialists today, ideally before you board the plane. 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. It describes aspects of Thai tax law for general context only; Thai rules are administered by Thailand’s Revenue Department and you should confirm your Thai position with a qualified local adviser. Australian and Thai tax outcomes depend on your specific circumstances, your residency in each country, your timing, and the Australia-Thailand tax treaty, and figures and thresholds change over time. Some measures referred to are proposed but not yet law and may change. Speak to our specialist expatriate tax team today, or with another registered tax agent, before acting.