SolvedDT18650 | Double Taxation Relief Manual: Thailand: agreement
From HM Revenue & Customs · Double Taxation Relief Manual
The agreement (SI81/1546) has effect
In the United Kingdom for
Income Tax from 1981-82
Capital Gains Tax from1981-82
Corporation Tax from 1 April 1981
Petroleum Revenue Tax for any chargeable period beginning on or after 1 January 1981
Development Land Tax for any realised development value accruing on or after 1 April 1981
In Thailand for taxable years and accounting periods beginning on or after 1 January 1981
The text of the Tax Treaty can be found via the Gov.uk website.