The governments of Japan and the Kingdom of Thailand maintain a longstanding diplomatic and economic relationship grounded in mutual respect and cooperation.
On 30 August 1990, the two countries signed the Agreement for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with respect to Taxes on Income. The Agreement entered into force on 1 January 1991 and replaced the previous 1936 Japan–Thailand Tax Treaty.
Scope of Application
Who does it apply to?
As stipulated in Article 1, the Agreement applies to residents of one or both of the Contracting States, whether individuals or legal persons.
Definition of Residency
Under Article 4, a “resident of a Contracting State” is defined by liability to taxation by reason of domicile, residence, place of management, or any other similar criterion.
In case of dual residency, tiebreaker rules include:
✓ The location of a permanent home;
✓ The center of vital interests;
✓ Nationality; or
✓ Mutual agreement between the competent authorities.
Permanent Establishment (PE) – Article 5
For corporate residency, a Permanent Establishment (PE) is deemed to exist if a business has a fixed place of business in the other country, including:
✓ A place of management;
✓ A branch, office, factory, or workshop;
✓ A mine, oil or gas well, quarry, or any other place of extraction of natural resources;
✓ A farm or plantation;
✓ A warehouse used for storage services on behalf of others.
Taxes Covered – Article 2
The Agreement also applies to any identical or substantially similar taxes that may be imposed after the date of signature.
The Agreement covers the following taxes:
| Country | Taxes Covered |
|---|---|
| Japan | • Income Tax • Corporation Tax |
| Thailand | • Income Tax • Petroleum Income Tax |
It also applies to any identical or substantially similar taxes introduced after the Agreement’s signing.
Taxation of Income – Key Articles
| Article | Income Type | Tax Treatment | Notes/Conditions |
|---|---|---|---|
| 6 | Immovable Property | Taxed in the state where the property is located | – |
| 7 | Business Profits | Taxed only in the residence state unless there is a PE in the source state | If PE exists, the source state may tax profits attributable to it |
| 8 | Shipping & Air Transport | Aircraft: taxable only in residence state. Shipping: taxable in source state at a reduced rate of 50% | – |
| 9 | Associated Enterprises | Allows profit adjustments if transactions between related parties deviate from arm’s-length principles | – |
| 10 | Dividends | Taxed in both states. Source country may withhold: | • 15% for industrial undertakings • 20% otherwise • Reduced rates apply if ≥25% shareholding |
| 11 | Interest | Taxed in both states. Withholding: | • 10% to banks/insurance • 25% otherwise • Exempt if paid to government, central bank, etc. |
| 12 | Royalties | Taxed in both states. Withholding capped at 15% | Covers copyrights, patents, trademarks, films, scientific works, etc. |
| 13 | Capital Gains | Generally taxed in the residence state | Source taxation applies for immovable property, PE assets, and some other gains |
| 14 | Independent Personal Services | Taxed in the source state if presence exceeds 183 days or a fixed base exists | Otherwise, taxed in the residence state |
| 15 | Director’s Fees | Taxed in the company’s residence state | – |
| 16 | Artistes & Athletes | Taxed in the country where the performance takes place | Exemption possible for cultural exchange programs |
| 17 | Government Service Income | Taxed in the paying country | Exemption if the recipient is a national of the other state |
| 18 | Teachers & Researchers | Exempt in the host state for up to 2 years | Exemption does not apply if income arises from private sector activities |
| 19 | Students & Trainees | Exempt in the host state for remittances, scholarships, and limited service income | Exemption up to 5 years for personal service income |
| 20 | Other Income | Taxed in the residence state unless attributable to a PE in the source state | Residual category; source country may tax if income arises there and is not otherwise addressed |
Relief from Double Taxation – Article 21
To avoid double taxation:
✓ Thailand allows a tax credit for Japanese tax paid, limited to the amount of Thai tax on the same income.
✓ Japan also allows a foreign tax credit for Thai tax paid, subject to its domestic limitations.
For income benefiting from Thai tax incentives (e.g., under the Investment Promotion Act B.E. 2520 (1977)), Japan permits a tax credit as though no exemption were granted. However, this credit treatment is limited to a period not exceeding 13 years from the date the incentive was first applied.
A maximum tax credit of 25% of gross income applies to dividends and royalties benefiting from reduced Thai withholding tax rates.
Comparison with the 1936 Treaty
The 1990 Agreement modernized and expanded the scope of the prior 1936 Treaty. It adopted internationally recognized concepts such as the definition of PE, arm’s-length pricing for related-party transactions, and more detailed rules for relief from double taxation. It also aligned with the evolving global standards later reflected in the OECD Model Convention and the UN Model.
Conclusion
The Japan–Thailand Double Taxation Agreement is a cornerstone for facilitating cross-border investment, trade, and movement of persons between the two countries. By allocating taxing rights and offering relief from double taxation, the DTA ensures legal certainty, mitigates tax disputes, and fosters economic cooperation. Its alignment with global best practices—including principles from the OECD’s Multilateral Instrument—reinforces its relevance amid evolving international tax dynamics.
For businesses and individuals operating across Thailand and Japan, this treaty provides a predictable framework to support international activities while avoiding double taxation and ensuring fair treatment.