Thailand's tax system is not as simple as expat forums make it sound, and not as frightening as accountants sometimes imply. The rules are clear once you understand a few fundamentals who counts as a tax resident, what income is assessable, and what changed in 2024. This guide covers all of it, in order, without jargon.
Your Situation Start Here
The relevant tax rules depend on your situation. Jump to the section that fits you most.
- Do foreigners have to pay tax in Thailand?
- Thailand income tax rates & brackets 2026
- Thailand tax on foreign income
- The US–Thailand tax treaty
- Thailand VAT
- Thailand property tax
- Thailand tax ID number
- Withholding tax
- Specialty topics: crypto, capital gains, inheritance
- Filing your Thai tax return
- Tax by visa category: LTR, DTV, Elite
- FAQs
Do Foreigners Have to Pay Tax in Thailand?
The 180-day residency rule
Thailand determines tax residency based on physical presence, not visa type or nationality. If you spend 180 days or more in Thailand in a calendar year (1 January to 31 December), you are a Thai tax resident for that year. This applies to everyone US citizens, UK nationals, Australians, and every other nationality regardless of what visa they hold.
Tax residency is assessed year by year. You can be a resident in 2025 and a non-resident in 2026 if your time in Thailand differs. There is no registration process or declaration required residency status is determined by where you actually are.
What counts as Thai-source income
Tax residents are liable on income from Thai sources. This includes employment income paid by a Thai employer, business income from a Thai operation, rental income from Thai property, and interest and dividends from Thai financial instruments. Non-residents are also taxed on Thai-source income, but typically at a flat 15% withholding rate rather than the progressive scale.
The 2024 foreign income rule change what changed and what didn't
Before 2024, a common and widely-practised interpretation of Thai tax rules meant that foreign income could be brought into Thailand tax-free as long as it was earned in a different calendar year. In September 2023, the Thai Revenue Department issued Ruling Por 161/2566, which closed this interpretation. From 1 January 2024, foreign-source income remitted to Thailand is assessable Thai income in the year it is remitted, regardless of when it was earned. Full explanation of the 2024 rule change →
Thailand Income Tax Rates & Brackets 2026
Progressive tax bands
Thailand uses a progressive personal income tax system. The rates below apply to taxable income that is, income after deductions and allowances have been subtracted.
| Taxable Income (THB per year) | Rate | Tax on this band | Cumulative tax at top of band |
|---|---|---|---|
| 0 – 150,000 | Exempt | 0 | 0 |
| 150,001 – 300,000 | 5% | 7,500 | 7,500 |
| 300,001 – 500,000 | 10% | 20,000 | 27,500 |
| 500,001 – 750,000 | 15% | 37,500 | 65,000 |
| 750,001 – 1,000,000 | 20% | 50,000 | 115,000 |
| 1,000,001 – 2,000,000 | 25% | 250,000 | 365,000 |
| 2,000,001 – 5,000,000 | 30% | 900,000 | 1,265,000 |
| 5,000,001 and above | 35% | Marginal | – |
Effective rate vs marginal rate a worked example
Your marginal rate is the rate on your highest band of income. Your effective rate is the rate you actually pay overall. They are very different numbers and expat forums often confuse them.
Example: Annual taxable income of 1,500,000 THB after all deductions. You do not pay 25% on all of it. You pay: 0 on the first 150k, 5% on the next 150k, 10% on the next 200k, 15% on the next 250k, 20% on the next 250k, and 25% on the remaining 500k. Total tax: approximately 240,000 THB an effective rate of 16%, not 25%.
Key deductions and allowances
- Employment income deduction: 50% of income, capped at 100,000 THB
- Personal allowance: 60,000 THB
- Spouse allowance: 60,000 THB (if spouse earns no income)
- Child allowance: 30,000 THB per child (60,000 for children born from 2018 onwards, up to three)
- Health insurance premiums: Actual amount, up to 25,000 THB
- Life insurance premiums: Actual amount, up to 100,000 THB
- RMF/SSF contributions: Subject to combined limits
Full guide to Thailand tax rates, brackets, and deductions →
Thailand Tax on Foreign Income
The 2024 rule change is the most consequential development in Thai tax for foreign residents in decades. In short: if you are a Thai tax resident (180+ days in Thailand) and you remit foreign-source income to Thailand, that income is now assessable for Thai PIT in the year you remit it. This applies to employment income from overseas, pension payments, rental income from foreign property, investment income, and most other income types.
The key exceptions are: income and savings earned before 1 January 2024; income protected under a double tax treaty; and income held by LTR Wealthy Global Citizen or Wealthy Pensioner visa holders under Royal Decree 743.
Full guide: Thailand tax on foreign income the 2024 rule change explained →
The US–Thailand Tax Treaty
The United States and Thailand have a limited tax treaty. Unlike Thailand's agreements with the UK, Australia, Germany, and many other countries, the US–Thailand treaty is not a comprehensive double taxation agreement covering all income types. It covers specific categories including government salaries, pensions paid by the US government, and students and trainees. Crucially, US Social Security payments are not explicitly covered in the treaty in the same way as in some other US treaties.
US citizens are taxed by the IRS on worldwide income regardless of where they live, which means most American expats in Thailand face a dual-filing obligation. The Foreign Tax Credit and, in some cases, the Foreign Earned Income Exclusion (FEIE) can be used to offset this, but the interaction requires careful planning.
Full US–Thailand tax treaty guide →
Thailand VAT What You Need to Know
VAT rate in Thailand
Thailand's standard VAT rate is 7% (currently reduced from the statutory 10%, a reduction that has been renewed repeatedly and as of 2026 remains in effect). VAT is applied to most goods and services sold in Thailand. It is included in the shelf price in shops but is typically added separately in B2B transactions.
Tourist VAT refund
Tourists (those who have been in Thailand for fewer than 180 days and are departing Thailand) can claim a refund of the 7% VAT on eligible purchases. The minimum purchase amount is 2,000 THB at any single store, with a minimum total across all purchases of 5,000 THB. You must shop at stores displaying the "VAT Refund for Tourists" sign, request the PP 10 form at point of purchase, and present goods, passport, receipts, and forms at the VAT refund counter in the departure hall of major airports.
Full guide: How to claim your Thailand VAT refund →
Thailand Property Tax
Thailand introduced the Land and Buildings Tax (LBT) in 2020, replacing the older House and Land Tax and Local Development Tax. LBT is an annual tax on land and building ownership, assessed on the official appraised value of the property. The rates are low by international standards residential property used as a primary residence with an appraised value under 50 million THB is fully exempt.
Transfer taxes apply when buying or selling Thai property: a 2% transfer fee (typically split between buyer and seller), either Specific Business Tax (3.3%, for properties held less than 5 years) or stamp duty (0.5%, for properties held 5 or more years), and withholding tax on the seller (calculated on the assessed or sale value, whichever is higher).
Full Thailand property tax guide →
Thailand Tax ID Number
A Thai Tax Identification Number (TIN) is a 13-digit number issued by the Thai Revenue Department. You need one to file a tax return, to claim VAT refunds as a business, and in some cases to open certain types of Thai bank accounts. Thai citizens automatically receive a TIN linked to their national ID. Foreigners apply at their local Revenue Department district office, bringing a passport, visa, and proof of address.
How to get a Thailand tax ID number →
Withholding Tax in Thailand
Thailand operates a withholding tax (WHT) system under which the payer of certain income types deducts tax at source before making payment. Common rates: dividends 10%, interest 15%, rental income 5%, service fees paid to foreign companies 15%, royalties paid abroad 15%. If you receive income subject to withholding, you will receive a WHT certificate (Bor Orr Jor 50) from the payer, which can be used to offset your annual PIT liability when you file.
Specialty Tax Topics
Crypto tax in Thailand
The claim that "Thailand is tax-free for crypto" is a significant oversimplification. Gains from cryptocurrency trading are technically assessable as personal income in Thailand. A 2022 Royal Decree provided a temporary exemption for certain exchange-listed crypto transactions, but the broader position that crypto profits are taxable under standard PIT rules applies. The interaction with the 2024 foreign income rules for offshore crypto holdings is an area of genuine uncertainty. Full crypto tax guide →
Capital gains tax
Thailand does not have a separate standalone capital gains tax. Gains from the sale of assets are assessed as ordinary personal income, subject to the progressive PIT rates. Gains from selling shares listed on the Stock Exchange of Thailand (SET) are exempt. Gains from selling Thai property are subject to withholding tax at the point of transfer.
Inheritance and gift tax
Thailand introduced inheritance tax in 2016 at a rate of 10% (5% for direct descendants) on inherited assets exceeding 100 million THB. A gift tax of 5% applies to gifts exceeding 20 million THB per year between parents and children (10% for gifts to other recipients).
Filing Your Thai Tax Return
Thai PIT returns for the previous tax year (January–December) are due by 31 March of the following year. Online filing through the Revenue Department's e-filing portal at rd.go.th extends the deadline to 8 April. A mid-year return (PND 94) is also required by September for certain income types (primarily rental income and professional fees). Employees with income only from employment where tax has been withheld correctly are often not required to file, but most expats with mixed income sources should file.
Full filing guide: forms, deadlines, and how to file online →
Special Visa Categories and Tax Treatment
LTR Visa the tax exemptions
LTR Wealthy Global Citizen and Wealthy Pensioner holders are exempt from Thai PIT on foreign-source income remitted to Thailand under Royal Decree 743 (2023). LTR Highly Skilled Professionals employed in Thailand pay a flat 17% PIT rate on their Thailand-source employment income instead of the progressive rate. These are significant, legally codified benefits not rumours or grey-area interpretations.
DTV what the tax picture looks like
The DTV visa carries no specific tax exemptions. DTV holders who spend 180+ days in Thailand in a calendar year are Thai tax residents subject to the standard PIT rules, including the 2024 foreign income rules. Full visa-by-visa tax guide →
Thailand Elite Visa
The Thailand Elite visa (now Thailand Privilege Visa) carries no specific tax exemptions. Holders are assessed as tax residents in the same way as any other foreigner based on their days in Thailand.
Frequently Asked Questions
Need Help With Your Thailand Tax?
Thai tax is manageable once you understand the structure, but it gets complex quickly if you have foreign income from multiple sources, a US tax obligation to manage alongside your Thai position, or a large crypto portfolio. For those situations, a qualified Thai tax adviser is worth the cost.
Look for advisers who are: licensed with the Thai Revenue Department, experienced with expat clients in your nationality, and transparent about fees before engagement. Most good firms will offer a free or low-cost initial consultation.
Calculate My Tax Filing GuideAll Thailand Tax Guides
Tax for Foreigners & Expats
Who owes what, when, and the 180-day rule explained clearly.
Read guide →Tax Rates & Brackets 2026
The full bands, worked examples, and every deduction you can claim.
Read guide →Foreign Income 2024 Rule Change
The most important change to Thai tax in years, explained plainly.
Read guide →US–Thailand Tax Treaty
What American expats are protected from, and what they're not.
Read guide →Thailand Tax ID Number
Who needs one, how to get one, step by step.
Read guide →VAT Refund for Tourists
How to reclaim the 7% VAT on qualifying purchases before you leave.
Read guide →Thailand Property Tax
Land and Buildings Tax, transfer taxes, and what foreign owners pay.
Read guide →Digital Nomads & LTR Visa Tax
Visa-specific tax rules: LTR, DTV, and Elite compared.
Read guide →Thailand Crypto Tax
Is crypto really tax-free in Thailand? The actual rules.
Read guide →Tax Filing: Deadlines & How to Pay
Forms, deadlines, the e-filing portal, and when to get help.
Read guide →