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Thailand Double Tax Agreements: Country-by-Country Summary
Thailand has over 60 Double Tax Agreements (DTAs) in force that allocate taxing rights between Thailand and the partner country. This guide explains how a DTA works, where to find the partner-country list, and which articles foreigners encounter most often.
TL;DR
Thailand has over 60 Double Tax Agreements (DTAs) in force — model-based bilateral treaties allocating taxing rights between Thailand and the partner country. DTAs are issued by Royal Decree under the Revenue Code §3. Where a DTA applies, it overrides domestic tax rules for the covered taxes (income, withholding on dividends, interest, royalties, services). Foreigners most often invoke DTAs for employment income (Article 15), director's fees (Article 16), pension (Article 18), independent personal services (legacy Article 14), and permanent establishment tests (Article 5).
Partner-Country List (Indicative)
Active DTAs include the United States, United Kingdom, Australia, Canada, Germany, France, Japan, China, India, Singapore, Malaysia, Indonesia, Vietnam, Philippines, South Korea, Hong Kong, Israel, Italy, Spain, Sweden, Norway, Finland, Netherlands, Belgium, Switzerland, Russia, Ukraine, UAE, Bahrain, South Africa, New Zealand, Luxembourg, Czech Republic, Austria, Denmark, Hungary, Poland, Romania, Slovenia, Mauritius, Cyprus, Bulgaria, Turkey, Pakistan, Bangladesh, Sri Lanka, Nepal, Estonia, Belarus, Armenia, Tajikistan, Uzbekistan, and others. The Revenue Department publishes the canonical list at rd.go.th.
Practical Use Cases
| Scenario | Typical DTA article | Effect |
|---|---|---|
| Foreigner employed by a Thai company | Article 15 (employment) | Tax in Thailand if work performed in Thailand; exemption rules for short visits |
| Foreigner's pension from home country | Article 18 | Often exclusively taxable in the source country (varies by treaty) |
| Royalties paid to foreign licensor | Article 12 | Reduced withholding tax (often 5-15%) |
| Dividends from a Thai company | Article 10 | Reduced withholding tax (often 10%) |
| Service fees to foreign provider | Article 7 / Article 14 | Threshold tests for permanent establishment |
How to Claim DTA Relief
- Obtain a Tax Residence Certificate (Por.Ngor.Dor.30 / 31) from the home-country tax authority showing residency for the relevant year.
- Submit to the Thai payer or to the Revenue Department with the relevant DTA article cited.
- The Thai payer applies the treaty-reduced withholding rate; otherwise refund is claimed after the year-end filing.
Common Mistakes
- Assuming the home-country tax certificate is automatic — it must be obtained and updated annually.
- Mixing up residence (treaty term) with citizenship.
- Forgetting that the 2024 foreign-source-income rules (Por.161/2566) interact with DTAs.
- Citing the wrong article (e.g., royalty vs services fee).
FAQs
1. Where do I read the DTA text?
The Revenue Department publishes consolidated DTA texts in Thai and English; the Royal Gazette has the original promulgating Royal Decree.
2. What if my country isn't on the list?
Domestic Revenue Code rules apply with no treaty relief; foreign-source income remittance rules then turn on residency and Por.161/2566.
Related Reading
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