Portugal: residence before citizenship is now seven or ten years

For most investors the residence card is only the departure point. The destination is a European nationality, and the distance between the two states is rarely as short as marketing material suggests.

An investment can open the door to residence. Becoming a citizen is governed by a different statute, assessed by a different authority, against a different set of conditions.

On 18 May 2026 that statute changed, and by a wide margin.

The new thresholds, from the statute

Period of legal residence	Who it applies to	Authority
Seven years	Nationals of Portuguese-speaking countries and citizens of EU member states	Article 6(1)(b) of Law 37/81, as amended by Organic Law 1/2026
Ten years	Nationals of all other countries, including Vietnam	As above
Four years	Stateless persons legally resident in Portugal	Article 6(3)
Five years	Third-degree lineal descendants of Portuguese-born nationals	Article 6(8)

What changed, and when

Organic Law 1/2026 amended Article 6 of Law 37/81, the Portuguese Nationality Law. Paragraph 1(b) now requires legal residence in Portuguese territory of at least seven years for nationals of Portuguese-speaking countries and citizens of EU member states, or ten years for nationals of all other countries.

Before this amendment the general threshold was five years. Summary pages — including guidance published by the justice authority itself — were still carrying the old figure when this article was checked on 19 August 2026. That is precisely the kind of discrepancy an investor cannot catch from marketing material.

Residence and citizenship sit on different rungs

A residence permit is a conditional entitlement tied to a stated reason and renewed on a cycle. Permanent residence is more durable: The renewal conditions ease and the holder typically gains wider access to the labour market and public services. It can still be lost if the holder is absent for long enough.

Citizenship is a different legal relationship altogether, carrying a passport, political rights, and freedom to move, live and work between EU member states. The confusion investors run into is precisely here: A residence permit does not convert into citizenship by the passage of time alone.

The permit makes an application possible. The application is then judged under nationality law, against the conditions set by that law.

How the residence clock is counted

The common route into a European nationality is naturalisation by time resident. The clock starts on the day residence becomes lawful and continuous.

Any gap in the clock — a card left to expire, a renewal filed late, a change of category handled through the wrong procedure — can send the assessing authority back to the beginning. It is the quietest and most expensive risk on the whole route.

Alongside the clock, most countries set qualitative gates: A language certificate at the level the statute names, a civics or integration test, a clean criminal record in both the country of residence and the country of origin, tax obligations discharged, and evidence of stable income. Some also weigh demonstrable ties to the local community.

Attitudes to dual nationality differ from country to country and cannot be generalised. Some accept it broadly. Others require the previous nationality to be renounced, or open exceptions only for narrow groups.

Each country’s stance on dual nationality is the point to verify first, before a route is started at all, because it governs both the asset structure and the tax planning of a family.

Time is only one of the conditions

The amended article also requires the applicant to demonstrate, by test or certificate, sufficient knowledge of the Portuguese language and culture, its history and national symbols; sufficient knowledge of the fundamental rights and duties attached to Portuguese nationality and of the political organisation of the state; and a solemn declaration of adherence to the fundamental principles of the democratic rule of law.

Which text applies to a file already open

Article 7 of the new law keeps the previous wording for administrative procedures pending when it entered into force. Filing before or after that date leads to two different sets of conditions — which makes the filing date a material fact rather than an administrative detail.

Five columns worth filling from the primary source

Programmes leading to a European nationality only compare once they are put on the same measure. Rather than asking which country is fastest, the useful step is to build a table with five columns, filled from the regulator.

The residence clock: the minimum qualifying period, and which categories of residence count towards it. The presence requirement: days required each year, and how a long absence is treated. Language and integration: the certificate level recognised, the form of assessment, and who is exempt.

Dual nationality: whether the country of residence and Vietnamese law both allow it. And the tax consequence: the threshold at which a person becomes tax resident, and the scope of income taxed once they are.

The sources have to be first-hand. In Portugal, residence procedures sit with the Agência para a Integração, Migrações e Asilo, while nationality files fall to the Instituto dos Registos e do Notariado. In Spain the naturalisation conditions are published by the Ministerio de Justicia.

In Ireland the residence and naturalisation routes are administered by Immigration Service Delivery, within the Department of Justice. The pages of the authorities named above carry the forms, the fees and the conditions in force. A summary on an intermediary website does not.

Risks that travel with the route

The largest is the law changing mid-route. Naturalisation conditions live in nationality law, and a legislature can tighten the residence threshold, raise the language standard, or change how qualifying time is counted.

Transitional provisions for files already open are decided at each amendment; they are not a default entitlement. Several investment-migration programmes on the continent have been narrowed or closed to new applications in recent years.

The second is tax. Keeping the residence clock running requires presence, and that same presence can make an investor tax resident, with a duty to declare worldwide income.

Which state may tax what is settled through double-taxation treaties, for which the most widely used reference text is the Model Tax Convention on Income and on Capital published by the OECD. This is arithmetic to do before money moves.

The third is the file itself. Source of funds has to be evidenced back to its origin, and documents issued in Vietnam usually need consular legalisation and a translation to the standard of the receiving country. A set of papers inconsistent on a name, an address or a date is enough on its own to stretch the assessment out.

What to check

This article makes no claim about Spain or Ireland: Their governing texts were not read in this review. For any country on a residence-to-citizenship path, the points to check are the nationality statute rather than the investment summary, the qualifying period for the applicant’s own nationality rather than the general figure, and which version of the law applies to an application already filed.

Permanent residence buys time; citizenship changes status. Between the two sits a chain of conditions, some quantitative and some not, that no size of investment shortens. The first task is not choosing a country but building the comparison on one measure and filling it from each authority directly.

Three things are worth following after that: amendments to nationality law in the countries running investment routes, changes in how qualifying residence is counted, and the rules on annual physical presence.

Updated 5 September 2026. The article above stands as published. This section records what the justice ministry’s own pages now say about the regulation Organic Law 1/2026 ordered, and sets out two changes to the way qualifying residence is counted that the original text did not cover.

The ninety days the law allowed

Article 4 of Organic Law 1/2026 runs to a single sentence. It requires the Government to make the necessary amendments to the Portuguese Nationality Regulation, approved as an annex to Decree-Law 237-A/2006 of 14 December, within ninety days counted from the publication of the law. Publication was on 18 May 2026, which puts the ninetieth day at 16 August.

The Ministry of Justice described the same requirement in its notice on the entry into force of the new rules. Under the heading Regulamentação complementar, the notice records that the practical application of several of the new rules depends on complementary regulation and on the interpretative and procedural detail that has to accompany it, and that the Government has ninety days to adapt the Regulation to the new provisions.

The notice does not say which rules. Read on 5 September, it is still the current text on the page.

The service page through which nationality applications are filed, run by the Institute of Registries and Notaries, carries a notice to the same effect: some of the changes depend on complementary regulation for the definition of the rules necessary to apply them, which makes it necessary to amend the Nationality Regulation within ninety days.

The service page records itself as last updated on 22 May 2026. In its list of grounds on which a file may be opened, residente legal em território português carries the parenthesis em atualização, and a separate block on the page says the same of its contents.

The ministry’s public guidance page on Portuguese nationality is flagged em atualização too, and still tells a reader that nationality is open to someone legally resident in Portugal for at least five years. It records itself as last updated on 18 May, the day before the new thresholds took effect.

Whether an amending decree-law has since been published is a question for the Diário da República rather than for a guidance page. What can be read on the ministry’s pages on 5 September is that they still present the amendment as required and not yet made.

Diário de Notícias reported on 19 August, days after the ninetieth day, that the practical detail had not appeared, that applicants had no defined way of proving three of the new conditions, and that the Institute of Registries and Notaries did not answer the paper’s questions.

What the statute asks for, and how far it goes

Article 6(1) of Law 37/81, as amended, sets nine conditions a candidate for naturalisation must meet cumulatively. Four of them were written in May.

• Sub-paragraph (c) requires the applicant to demonstrate, by test or by certificate, sufficient knowledge of the Portuguese language and culture, of national history and of the national symbols.
• Sub-paragraph (d) requires sufficient knowledge of the fundamental rights and duties attached to Portuguese nationality and of the political organisation of the Portuguese state.
• Sub-paragraph (e) requires a solemn declaration of adherence to the fundamental principles of the democratic rule of law.
• Sub-paragraph (i) requires the capacity to ensure one’s own subsistence.

Each of these stops at a different point. On (c) the statute names two acceptable forms of proof, a test or a certificate, without naming which test or which certificate answers the new material on history and symbols.

On (e) it names the act, a solemn declaration, without saying in what terms or before whom. On (d) and (i) it names no form at all.

The gap is not in what an applicant has to be; it is in what an applicant has to file. The ministry’s notice does not say which rules it means. Diário de Notícias named three of them: knowledge of rights and duties, the declaration, and subsistence.

Which files the transitional rule reaches

Article 7(2) keeps the previous wording of the Nationality Law for administrative procedures pending at the date the new law entered into force, 19 May 2026.

A procedure that was not pending on that date falls to be assessed under the amended text, which sets seven years of legal residence for nationals of Portuguese-speaking countries and citizens of EU member states and ten years for nationals of all other countries.

Whether a particular file was pending on 19 May is therefore the fact that decides which version of the statute it is read against. It turns on whether a procedure had been commenced by that date, not on when a set of documents was assembled and not on when a residence period was completed.

Two changes to the clock, in force since May

The same law repealed Article 15(4). That provision, inserted by Organic Law 1/2024 in March 2024, counted towards qualifying residence the time elapsed from the moment a temporary residence permit was applied for, provided the permit was later granted.

With Article 15(4) gone, what remains is Article 15(1), which is unchanged and which defines legal residence as being regularised before the Portuguese authorities under one of the titles, visas or authorisations the entry-and-stay regime provides. Time before a person holds one of those does not become qualifying residence by virtue of a permit granted afterwards.

Whether any of that period counts on another footing depends on what the person held at the time, which is a question about their own documents rather than about the statute.

Article 15(3) moved in the same direction. Before May it allowed periods of legal residence, continuous or broken, to be added together provided they fell within a maximum interval of fifteen years, with no distinction by nationality.

The amended provision now sets that interval at six, nine or twelve years, according to whether the applicant is stateless, a national of a Portuguese-speaking country or an EU member state, or a national of any other country. A Vietnamese passport holder is in the last group.

Ten qualifying years must now be assembled inside twelve, where five had to be assembled inside fifteen. Where residence is broken rather than continuous, that is the arithmetic that decides whether the total is reachable at all.

What to watch

Three things. First, the Diário da República rather than a summary page: whether the necessary amendments have been made, and, if they have, whether they say anything about files opened before they existed.

Second, the em atualização flags on the ministry’s nationality pages, because while they are up the residence figure a reader finds there is the one the statute replaced in May. Third, the file’s own history, because Article 7(2) turns on whether a procedure was pending on 19 May and on nothing else.