Thai tax for foreign residents — what changed in 2024 and what 2026 looks like.
For decades, foreigners living in Thailand routinely escaped Thai tax on foreign income simply by deferring remittance to a later year. The 2024 reform closed that loophole. Today, foreign income remitted to Thailand by a tax-resident is taxable in the year of remittance, full stop — regardless of when it was earned. The big exception: LTR visa holders, exempt under Royal Decree 743. Here's the 2026 picture.
This is general orientation, not tax advice. Your actual liability depends on remittance timing, double-tax treaty, visa category, and individual circumstances. Always consult a Thai tax advisor before relying on any specific position.
Are you a Thai tax resident?
The 180-day rule: spend 180 days or more in Thailand in any calendar year (1 January – 31 December) and you're considered a Thai tax resident for that year. The visa you hold doesn't matter — it's pure days-in-country. Tourist, retirement, DTV, LTR, Privilege — same threshold.
Tax residency means you're potentially liable for Thai personal income tax on:
- Thailand-source income (always taxable)
- Foreign-source income remitted to Thailand in the same calendar year as it's earned (post-2024 reform)
The 2024 remittance reform
Until 1 January 2024, foreign income earned in one year and remitted to Thailand in a later year was tax-free for tax residents. This created a popular tax-deferral strategy — earn this year, hold abroad, remit next year, no Thai tax.
Effective 1 January 2024, that timing trick stopped working. Foreign income remitted to Thailand by a tax resident is now taxable regardless of when it was earned.
The late-2025 12-month seasoning proposal
In late 2025, the Thai Revenue Department floated a proposal that would re-introduce a partial deferral — foreign income held offshore for at least 12 calendar months before remittance would not be taxable. As of April 2026, this is a proposal under consideration, not law. Watch for it — if it passes, it would significantly soften the 2024 reform for many expats. Until then, treat the 2024 rules as fully active.
Tax rates for residents (2026)
Thai personal income tax is progressive:
| Net taxable income (THB) | Marginal rate |
|---|---|
| 0 – 150,000 | 0% (exempt) |
| 150,001 – 300,000 | 5% |
| 300,001 – 500,000 | 10% |
| 500,001 – 750,000 | 15% |
| 750,001 – 1,000,000 | 20% |
| 1,000,001 – 2,000,000 | 25% |
| 2,000,001 – 5,000,000 | 30% |
| 5,000,001 + | 35% |
Personal allowances and deductions reduce the taxable base. The 60,000 THB personal allowance plus the 100,000 THB earned-income deduction means most retirees with under 200k THB/yr remitted owe nothing.
How visa choice affects Thai tax
| Visa | Tax treatment of foreign income |
|---|---|
| LTR-W / LTR-P / LTR-T | EXEMPT — Royal Decree 743 explicitly exempts foreign-source income remitted by these LTR holders from Thai personal income tax |
| LTR-H (Highly-Skilled) | 17% flat rate on Thai-source employment income (vs progressive up to 35%) |
| SMART-S | Standard Thai tax rules |
| Privilege Visa | NO tax benefit — subject to standard Thai progressive rates if tax-resident |
| Non-O Retirement | Standard Thai progressive rates if tax-resident |
| Non-O-A / O-X Retirement | Standard Thai progressive rates if tax-resident |
| DTV | Standard Thai progressive rates if tax-resident |
| Non-O Marriage | Standard Thai progressive rates if tax-resident |
| Non-B + Work Permit | Thai-source employment income fully taxable; foreign-source same as above |
| ED | Standard Thai progressive rates if tax-resident (and ED holders can't legally work in Thailand) |
| Tourist (under 180 days/yr) | Not tax-resident; foreign income not taxable |
The LTR tax exemption explained
LTR is the only Thai visa category with a statutory tax exemption. Royal Decree No. 743 (B.E. 2565), issued 2022, explicitly exempts foreign-source income remitted to Thailand by qualifying LTR holders (Wealthy Global Citizen, Wealthy Pensioner, Work-from-Thailand Pro) from Thai personal income tax.
Why this matters in 2026: the 2024 remittance reform that hit other expats doesn't hit LTR holders, because Royal Decree 743 sits above the standard tax code. The exemption survives unless and until that decree is amended.
Practical tax-planning patterns
If you spend under 180 days/yr in Thailand
You're not a Thai tax resident. Foreign income isn't Thai-taxable regardless of remittance. Pick the cheapest visa (DTV at 10k THB, or visa-exempt if your stay is short enough).
If you spend 180+ days/yr and earn under $80k from foreign sources
You're a Thai tax resident but probably below the threshold where Thai tax is meaningful for you. Track remittance carefully, declare what you bring in, use personal allowances. DTV or Non-O retirement work; total tax burden is usually small.
If you spend 180+ days/yr and earn $80k+ from foreign sources
LTR is the answer. The savings vs Privilege or Non-O retirement run into tens of thousands of dollars per year for high earners. See the LTR vs Privilege math.
If you have substantial Thai-source income
Thai tax always applies to Thailand-source income regardless of visa. LTR-H gives you 17% flat (vs 35% top progressive). Otherwise progressive rates apply.
Filing a Thai tax return
If you're a Thai tax resident with taxable income, you must file by 31 March of the following year. Forms PND 90 (residents with multiple income types) or PND 91 (employment-only). Filing is in Thai — most expats use a Thai tax accountant for ~3,000–10,000 THB per return.
Double-tax treaty relief
Thailand has tax treaties with 60+ countries that prevent double taxation on the same income. If your home country taxes a particular income type and Thailand also wants to, the treaty determines who has primary right and how to credit the other side. Specific outcomes vary — talk to a tax advisor familiar with both your home country's and Thailand's rules.
FAQ
I don't actually move money into Thailand — do I owe Thai tax?
Does Privilege Visa exempt me from tax?
Is my US Social Security taxable in Thailand?
Does buying property in Thailand count as remittance?
How does Thailand know about my offshore income?
Related guides
Worried about Thai tax exposure?
We'll walk you through your tax-residency status and whether LTR or another visa structure could save you tens of thousands per year. We'll also refer you to a Thai tax specialist for the formal advice.