Portugal United Kingdom double taxation agreement: is it in force?
Yes: the AT list shows a double taxation convention between Portugal and United Kingdom, in force since 29 December 2025. Aviso n.º 1/2026/1 published 20 January 2026.
- Country
- United Kingdom
- Name in the AT list
- Reino Unido (Em vigor desde 29/12/2025)
- Status per the AT table
- in force
- Legal instrument (as printed by AT)
- Resolução da Assembleia da República n.º 206- A/2025 de 19 de Dezembro
- Aviso, publication and entry into force (as printed by AT)
- Aviso n.º 1/2026/1 publicado em 20-01-2026 EM VIGOR DESDE 29-12-2025, com produção de efeitos a partir de 01-01-2026
- Entry into force of the convention
- 29 December 2025
- Aviso publication date
- 20 January 2026
- Official instrument
- Convention text (PDF) on the AT list of conventions
Reino Unido (Cessou a sua vigência em 28/12/2025) - Sources
- Autoridade Tributária e Aduaneira, list of conventions, retrieved 5 November 2026; Quadro resumo das convenções 2026, retrieved 5 November 2026
What this page does not say
We do not show withholding tax rates, residence rules or how the convention applies to a person or a company: those are in the convention text linked above, and the Autoridade Tributária e Aduaneira decides. This page is not tax advice.
The AT texts are in Portuguese and are quoted as printed. The English labels are ours.
Ask a question about this convention
Ask a question about this country and its convention with Portugal. It is free and we answer by email. We do not give legal or tax advice.