Treaty detail
United Kingdom - Thailand tax treaty
A practical treaty page built around the official treaty text, key withholding categories, permanent-establishment rules, and article-level summaries.
Signed
1981-02-18
Effective
1981-04-20
Articles seeded
6
Withholding snapshot
Dividends
Individual rate: 20% · Corporate rate: 20%
The UK-Thailand treaty applies a 20 percent ceiling on dividends in many cases, with lower rates for specific qualifying conditions. As a 1981-era treaty, the dividend article reflects different baselines than more recent UK treaties.
Interest
Rate: 25%
Interest is subject to higher ceilings under the 1981 treaty compared to modern UK treaties, with a general 25 percent rate and a 10 percent rate for qualifying financial-institution interest. Article-level review is recommended.
Royalties
Rate: 15%
Royalties are generally subject to a 15 percent ceiling, with lower rates for certain qualifying categories. The article-level definition includes copyright, patent, and know-how.
Permanent establishment
Construction threshold: more than 6 months
Dependent-agent rules reflect the 1981 vintage of the treaty. The UK-Thailand treaty includes a service PE concept and a shorter construction threshold than many UK treaties with OECD-member states.
Other treaty flags
The UK-Thailand treaty divides pension rights between source and residence depending on the type of payment. Government-service pensions generally follow source-country rules, with private pensions taxable in the residence state.
Seeded article summaries
Article 4
Residence
Defines treaty residence and underpins every other treaty claim.
Residence under the 1981 UK-Thailand treaty uses tiebreaker rules consistent with the era. Dual-residence questions are resolved using the article's mechanism and the result drives entitlement to other benefits.
Article 5
Permanent Establishment
Defines the threshold for source-country business taxation.
Article 5 follows a more developing-economy-oriented baseline. The construction threshold and service-related PE rules reflect the 1981 vintage of the treaty and deserve specific article-level review.
Article 7
Business Profits
Reserves business profits to the residence state absent a permanent establishment.
Business-profits relief is the practical operating rule for cross-border services and trading between the UK and Thailand. The PE threshold is more easily triggered under this treaty than under more recent UK treaties.
Article 10
Dividends
Caps source-country withholding on dividends at the treaty rate.
The 1981 UK-Thailand dividend article applies a 20 percent ceiling in many cases, reflecting an era of less aggressive bilateral rate reductions. Article-level review is recommended for specific holding patterns.
Article 11
Interest
Caps source-country withholding on interest at the treaty rate.
Interest payments between the UK and Thailand are subject to higher ceilings than under more modern UK treaties. The 25 percent and 10 percent rates apply depending on qualifying conditions.
Article 12
Royalties
Caps source-country withholding on royalties at the treaty rate.
Royalties are subject to a 15 percent ceiling under the UK-Thailand treaty. The article-level definition controls characterization for software, IP, and know-how payments.
Official text
Other treaties involving these jurisdictions
Computed from the cross-reference graph. Links open the related entity on this site.
This entry cites
- TreatyUS–GB treaty
- TreatyGB–CA treaty
- TreatyGB–AU treaty
- TreatyGB–DE treaty
- TreatyGB–FR treaty
- TreatyGB–JP treaty
- TreatyGB–IE treaty
- TreatyGB–NL treaty
Primary sources
- HMRC Thailand tax treaties pageVerified 2026-05-20
- Thai Revenue Department international treaty listVerified 2026-05-20
- OECD MLI signatories and partiesVerified 2026-05-20
Important disclaimer
This library is for general tax education only. Always verify filing obligations, due dates, and tax consequences against the cited primary source or with a qualified tax professional.