When does a foreign national become a tax resident in Thailand?

A person who resides in Thailand for an aggregate period of 180 days or more in any calendar tax year is legally deemed a Thai tax resident.

What changed under the 2024 Revenue Department tax reform?

Previously, foreign income remitted in a calendar year after it was earned was tax-exempt. Since 2024, all foreign-sourced income brought into Thailand by a tax resident is assessable to Thai PIT regardless of when it was earned.

Thailand Foreign Income Tax Reform 2026: Rules for Expats & Nomads

Thailand Tax Reform on Remitted Foreign Income: Essential Guide for Expats & Nomads

Since the Revenue Department's major ruling on foreign-sourced income, funds brought into Thailand by tax residents (>180 days) are subject to Thai PIT. Key rules, exemptions, and DTA tax credits.

Simulequa Southeast Asia

Verified Author

Thai Tax & Nomad Structuring

Published2 กรกฎาคม 2569

Read time8 min

The New Era of Thai Personal Income Taxation

Historically, Thailand was renowned for a territorial tax loophole: foreign-sourced income remitted into Thailand in a subsequent calendar year was exempt from Thai Personal Income Tax (PIT).

Under Revenue Department Departmental Instruction No. Paw 161/2566 and Paw 162/2566, that distinction has been eliminated:

180-Day Rule: Staying in Thailand for 180 days or more during a calendar year (January 1 to December 31) creates Thai tax residency.
Assessable Remittance: Any income derived from employment abroad, foreign business, or overseas assets that is remitted into Thailand during your tax residency is subject to progressive Thai PIT.

Thai Progressive PIT Brackets 2026

0 to 150,000 THB: 0% (Exempt).
150,001 to 300,000 THB: 5%.
300,001 to 500,000 THB: 10%.
500,001 to 750,000 THB: 15%.
750,001 to 1,000,000 THB: 20%.
1,000,001 to 2,000,000 THB: 25%.
2,000,001 to 5,000,000 THB: 30%.
Over 5,000,000 THB: 35%.

Worked Scenario: Expat Remitting 1,200,000 THB to Live in Thailand

Consider a digital nomad or early retiree spending 220 days in Bangkok and remitting 1,200,000 THB (~$33,000 USD) to fund local living expenses:

Standard Deductions:
- Employment expense deduction: 50% up to 100,000 THB.
- Personal taxpayer allowance: 60,000 THB.
- Net assessable income: 1,200,000 - 160,000 = 1,040,000 THB.
Progressive Bracket Computation:
- First 150,000 THB @ 0% = 0 THB.
- Next 150,000 THB (150k–300k) @ 5% = 7,500 THB.
- Next 200,000 THB (300k–500k) @ 10% = 20,000 THB.
- Next 250,000 THB (500k–750k) @ 15% = 37,500 THB.
- Next 250,000 THB (750k–1M) @ 20% = 50,000 THB.
- Remaining 40,000 THB (1M–1.04M) @ 25% = 10,000 THB.
- Total Annual Thai PIT: 125,000 THB (~$3,450 USD).
- Effective Tax Rate: 10.4%.

Double Taxation Treaties (DTA) & The LTR Visa Alternative

DTA Foreign Tax Credits: Thailand has Double Taxation Agreements with over 60 countries (including France, UK, US, Germany). Taxes paid in your home country on the remitted income can be claimed as a tax credit against Thai PIT.
Long-Term Resident (LTR) Visa: High-income remote workers (Work-From-Thailand Professionals) and Wealthy Pensioners holding the 10-year LTR visa are granted a statutory exemption from Thai tax on overseas income remitted into Thailand.