Moving to Portugal from the UK: the 2025 tax treaty that replaced the 1968 one

Search for how to move to Portugal from the UK and you will be told about Brexit. Freedom of movement ended, ninety days in any hundred and eighty, you need a national visa now.

All true. All five years old.

The first screen gives you the government's own guide, two removals firms, a money-transfer company, a UK immigration practice, two Reddit threads and a Facebook group. Between them they will move your furniture and tell you what the Algarve is like in February.

None of them mentions that the instrument deciding how the two countries divide the right to tax you was replaced fourteen months ago.

The UK–Portugal tax treaty was replaced in 2025, after fifty-seven years

The convention that governed this was signed on 27 March 1968 and entered into force on 17 January 1969. It is older than the Portuguese constitution.

It is gone. A new convention was signed on 15 September 2025 and entered into force on 29 December 2025. Fifty-seven years between the two signatures.

That is a fact about an instrument, not a warning, and it is checkable in one click: HMRC's own Double Taxation Relief Manual carries both, with the note that the previous convention "applied until the dates from which the above convention took effect".

When the new UK–Portugal convention actually applies to you

The two countries did not start on the same day, and this is the part with practical teeth.

Portugal applies the new convention from 1 January 2026, in respect of all taxes covered.

The United Kingdom applies it from 1 January 2026 for withheld taxes, from 1 April 2026 for corporation tax, and from 6 April 2026 for income tax and capital gains tax.

So between January and April of 2026 the two states were applying different conventions to the same person. That is not a defect — each state's dates follow its own tax year, and a UK tax year begins on 6 April — but it means that a question about early 2026 has two answers depending on which side of it you stand, and that anyone reasoning about a transitional year from "the new treaty" alone is reasoning from one country's calendar.

What the 2025 convention did not change: pensions

Here is where we expected to find the story, and did not.

A British reader moving to Portugal on a D7 is usually a retiree, and the question underneath everything is which country taxes the pension. It would be a good headline to say a new treaty had moved it. It would also be false.

Article 17 of the 2025 convention:

> "Subject to the provisions of paragraph 1 of Article 18, pensions and other similar remuneration paid to a resident of a Contracting State, shall be taxable only in that State."

Article 17(1) of the 1968 convention:

> "Any pensions and other similar remuneration (other than pensions or remuneration to which Article 18 applies) paid in consideration of past employment to a resident of a Contracting State and any annuity paid to such a resident shall be taxable only in that State."

Both name the state of residence. The wording was modernised and the carve-out for government service moved from a parenthesis into a cross-reference. The rule did not move.

We are printing this because the opposite is the natural assumption. A reader who learns that a fifty-seven-year-old treaty has been replaced will assume everything under it changed, and on this question nothing did.

Government service pensions are the exception, and nationality decides it

Article 18(1) keeps the pension of someone who served a state taxable only in the paying state — a British civil service or armed forces pension stays with the United Kingdom — with one turn that catches people:

> "However, where that individual is a not a national of the paying State but is a national of the other Contracting State, such salaries, wages, pensions, and other similar remuneration may be taxed in both Contracting States."

So the carve-out depends on nationality rather than on residence, and it can put the same pension inside both systems. If your income includes a government-service pension, this is the paragraph to take to somebody licensed in both countries.

Visa routes for British citizens moving to Portugal are not on this page

There is no UK-specific route. Since freedom of movement ended, a British citizen is a third-country national in Portuguese law like any other, and uses the ordinary routes: the D7 for passive income, the D8 for remote work, the investment permit.

Their thresholds, article numbers and what each actually requires are in the Portugal residence guide, the D8 page and the golden visa page. None of it changes because the applicant is British, and repeating it here would only make this page longer than the thing it exists to say.

Portuguese citizenship for UK citizens still takes ten years

If the plan runs that far: a British citizen is neither an EU national nor a national of a Portuguese-speaking country, so the period is ten years rather than seven.

The more consequential question is when those ten years start, and the answer changed on 19 May 2026 — a paragraph that let time in the AIMA queue count was repealed. That is set out with the repealing provision in Portugal's nationality law, and worked through for a non-EU applicant in moving to Portugal from the US, which is the same arithmetic. You can put your own dates into our naturalisation clock.

What this page will not compute for a British taxpayer

Whether you have left the UK tax net at all. That is decided by the UK's own statutory residence test, which counts days and ties and has nothing to do with Portuguese law or with the convention. It is HMRC's rule, published by HMRC, and this site verifies European instruments rather than the UK tax code. Naming it is useful; reciting day counts we have not read at their source is what we criticise other pages for.

Your actual tax. The convention allocates and relieves. What you pay depends on your own figures in two systems, and on the Portuguese regime you land in.

Whether the Portuguese incentive regime helps you. NHR is closed to new applicants; what replaced it is not the subject of this page and we have not read its conditions for this piece.

What the leading tax guide for moving to Portugal from the UK leaves out

Blevins Franks are cross-border financial advisers, their page on residency and taxation for this move sits on the first screen, and they are the only tax specialists there. Opened in full on 8 September 2026 — nine and a half thousand characters — it contains no occurrence of "treaty", "convention", "double tax", "1968" or "2026". The convention is absent in both its old and its new form.

The date explains it rather than condemning it: the page is dated 11 February 2025, seven months before the new convention was signed. It was right when it was written, and nobody has been back.

That is one page, named, opened in full, and it is the only page here we are making a claim about. The others on that screen we did not open, and we are not going to tell you what is in them.

Frequently asked questions about moving to Portugal from the UK

More on Portuguese visas, residence and citizenship

Routes and thresholds are in the Portugal residence guide; remote work in the D8 page; the investment route in the golden visa page; naturalisation in Portugal's nationality law. The American version of this move, where the tax position is genuinely different because the United States taxes citizenship rather than residence, is in moving to Portugal from the US. What Portugal costs, from INE, is in the cost of living in Portugal.

Every Portuguese instrument named here has its own line, with the date it was read, on our sources page.