Tax residence is a day-count test
Verified 1 August 2026. Section 41 of the Revenue Code, the Revenue Department's current foreigner tax infographic and its English and Thai foreign-income guides use 180 days or more in a calendar year. Some older overview wording says “more than 180 days”, but the statute and newer subject-specific material establish that exactly 180 days meets the domestic residence test. Nationality and visa label do not replace the day-count test.
Foreign-source income: what the current order covers
The Revenue Department's official guide to foreign-source income and foreign tax credits explains Departmental Instruction P.161/2566 and P.162/2566. As verified on 1 August 2026, foreign-source income is within the current rule when both conditions apply:
- the person was a Thai tax resident in the calendar year in which that foreign-source income arose; and
- that income is brought into Thailand, whether in the same year or a later year.
Instruction P.162 limits the change to foreign-source income arising from 1 January 2024. The official guide therefore does not support the old statement that all money remitted after that date is taxable regardless of when it was earned. Whether a particular receipt is assessable income, capital, exempt income or treaty-protected depends on its facts and records.
No enacted remittance safe-harbour found
As of 1 August 2026, no Revenue Department order or Royal Gazette instrument establishing a general 12-month or two-year offshore holding safe-harbour was located in the official material reviewed for this page. Media reports about possible changes are not presented here as law. The published P.161/P.162 framework remains the official basis cited by the Revenue Department.
Published personal income-tax rates
As published in the Revenue Department rate table and checked on 1 August 2026, these are the marginal bands for net taxable income:
| 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% |
Deductions, allowances, exemptions and tax credits are separate calculations. This page does not infer a zero-tax result from the amount remitted.
LTR benefits have statutory conditions
Royal Decree No. 743 provides a foreign-source-income exemption for qualifying persons in the Wealthy Global Citizen, Wealthy Pensioner and Work-from-Thailand Professional LTR categories, subject to the decree's conditions. It also provides a 17% rate for specified assessable employment income of qualifying Highly Skilled Professionals, subject to the decree.
As of 1 August 2026, the BOI LTR laws and regulations page still publishes the decree. Holding a visa with a different label does not by itself determine the tax treatment of every receipt, and this page does not treat LTR status as a blanket exemption from all Thai tax.
Foreign tax credit and treaty questions
The Revenue Department's official guide explains that a foreign tax credit may be available under a double-tax agreement and is limited by the agreement and Thai tax calculation. The result depends on the income type, source country, tax already paid, treaty wording and supporting evidence. A claim about a named pension, social-security payment, credit-card transaction or property purchase cannot safely be made from the remittance rule alone.
Filing dates and forms
As checked on 1 August 2026, Section 56 and the Revenue Department's filing calendar set the ordinary annual personal-income-tax return deadline at the last day of March following the tax year. The current English forms page publishes the tax-year 2025 P.N.D.90 and P.N.D.91 materials. A separately announced electronic-filing extension can vary by year.
Whether a person must file, which form applies and what evidence supports a foreign tax credit are tax-administration questions for the Revenue Department or a suitably qualified tax professional. This guide supplies the published rule and sources, not personal tax advice.
FAQ
Is every transfer into Thailand taxable?
No. The current official guide applies tests including residence in the year the foreign-source income arose, the nature and date of that income, and remittance to Thailand. Capital, exempt income and treaty treatment require their own analysis.
Does the current rule reach income earned before 2024?
Revenue Department Instruction P.162 states that the P.161 interpretation applies to foreign-source income arising from 1 January 2024. The English and Thai official guides reviewed on 1 August 2026 reflect that limitation.
Does a visa determine tax residence?
No. The Revenue Department uses a calendar-year day-count test. Visa status can be relevant to a specific statutory benefit, such as qualifying LTR treatment, but it is not the general residence test.
Is foreign tax automatically credited in full?
No. The Revenue Department guide says the credit depends on the applicable double-tax agreement and is limited by the relevant Thai tax calculation. Documents and income classification matter.
What changed in this verification
24 July 2026: corrected the claim that all later remittances are taxable regardless of earning date; added the P.162 pre-2024 limitation; removed an unenacted safe-harbour proposal and categorical planning claims. 25 July 2026: corrected the residence threshold using newer subject-specific material. 1 August 2026: confirmed from Section 41 that exactly 180 days meets the domestic residence test, and re-verified the remittance framework, rate table, LTR decree, filing deadline and current forms.
Related guides
- LTR Visa — Royal Decree 743 (The tax-exempt option)
- Privilege vs LTR — programme and tax-treatment differences (Verify current official criteria)
- DTV vs LTR — When the LTR fee pays back (For mid earners)
General information enquiry