To get Portuguese citizenship you need one of four open legal routes: descent (children, grandchildren and, since 2026, great-grandchildren), naturalization after legal residence, marriage or a de facto union with a Portuguese citizen, or birth in Portugal under specific conditions. The Sephardic Jewish route is closed to new cases. Portugal allows dual nationality, so you generally keep your original passport, subject to your home country's law. Applications are submitted to the Institute of Registries and Notaries (IRN), under the Ministry of Justice.
Since 19 May 2026 a new nationality law applies to new applications: see the Portugal nationality law 2026 update below before you apply.
Portuguese citizenship law is rooted in Article 4 of the Portuguese Constitution and shaped decisively by the Nationality Law of 1981, which opened the door to citizenship by descent. Portuguese citizenship carries meaningful rights: the right to vote, a Portuguese passport and citizen card, freedom to live and work anywhere in the EU, and visa-free travel to a very large number of destinations. Applications are processed by the Institute of Registries and Notaries (IRN), under the Ministry of Justice. This guide explains how to get Portuguese citizenship: every legal route currently available, the benefits, how dual citizenship works, and the practical steps of applying.
Organic Law no. 1/2026 changed the Nationality Law and applies to applications filed from 19 May 2026. Applications filed up to 18 May 2026 continue under the previous law. The main changes:
Confirming which route applies to you is the essential first step before planning a citizenship strategy.
| Route | Who It's For | Core Requirement | Residency Required? |
|---|---|---|---|
| Descent | Children, grandchildren and great-grandchildren of Portuguese nationals | Proof of nationality and an unbroken chain of records for each generation | No for children and grandchildren; generally yes for great-grandchildren |
| Naturalization | Legal residents (D2, D7, D8, Golden Visa, EU citizens) | 10 years' residence (7 for CPLP and EU) + Portuguese language proof + clean record | Yes |
| Marriage / Union | Spouses/partners of Portuguese citizens | 3 years with a Portuguese child, 6 years without, plus a link to Portugal | Not necessarily |
| Birth in Portugal | Children born in Portugal to foreign parents | A parent's legal residence and a declaration | Parent-dependent |
| Sephardic Descent | Descendants of Portuguese Sephardic Jews | Closed to new applications; earlier filings follow the previous rules | No |
Most applicants qualify under more than one basis without realizing it — an eligibility review finds your strongest path.
For legal residents of Portugal, naturalization offers a structured pathway to nationality. Under the current framework, citizenship generally becomes available after 10 years of lawful residence (7 for CPLP and EU nationals), counted from the first residence permit, though shorter periods may apply in limited situations.
The process requires basic Portuguese language proficiency, a clean criminal record, and evidence of genuine integration. As a trusted immigration law firm in Lisbon, we help applicants prepare documentation correctly and avoid common procedural issues that delay or compromise an application.
Who Typically Qualifies
The Portuguese language component (A2, via CIPLE, with exemptions for nationals of Portuguese-speaking countries) is frequently underestimated. Preparing in advance reduces the risk of refusal due to avoidable technical shortcomings.
Portugal recognizes dual citizenship, so dual nationality in Portugal is possible and applicants generally do not need to give up their original nationality. The limit is your home country: some countries do not allow dual nationality or require renunciation, so check its rules before applying for Portuguese citizenship. U.S. citizens in particular should ensure their application is structured to remain compliant with both Portuguese and American requirements.
Holding Portuguese dual citizenship does not by itself change where you pay tax: tax residence depends on where you live.
A Portuguese passport and citizen card, with visa-free travel to a very large number of destinations.
The freedom to live, work and study in Portugal and across the EU without residence permits.
The right to vote in Portuguese and European elections.
Portugal does not require you to renounce, subject to your home country's law.
Children can often acquire Portuguese nationality through a Portuguese parent.
No residence permit renewals, and a permanent right to return to Portugal.
Requirements vary by route, but most applications require the following.
Careful coordination of these requirements is often the deciding factor in a smooth application.
Processing time varies by pathway, completeness of documentation, and current volumes at the IRN. Official fees are set by the IRN and vary by route; apostille, translation and legal costs are separate and should be confirmed at the time of application.
Portugal's nationality law is uniform nationwide, but procedural practice can vary by registry office. Lisbon uses central, higher-volume registries; Porto has distinct workflows; Cascais and the Algarve benefit from expat-focused guidance; Madeira and the Azores involve additional regional considerations.
Advisors familiar with regional practice help ensure applications are handled efficiently, wherever you're based.
When an application is refused, understanding the legal basis helps determine whether to correct and resubmit, or pursue a formal appeal.
You can become a Portuguese citizen through descent (children, grandchildren and, since 2026, great-grandchildren), naturalization after legal residence, marriage or de facto union, or birth in Portugal under specific conditions. The Sephardic route is closed to new applications. Applications go to the IRN.
First confirm which route applies to you, then gather civil and criminal records, legalize and translate them, meet any language requirement, and file with the IRN directly or through a lawyer. Applications filed from 19 May 2026 follow the new Nationality Law (Organic Law 1/2026).
Organic Law 1/2026 applies to applications filed from 19 May 2026. Naturalization now needs 10 years of legal residence (7 for CPLP and EU nationals), counted from the first residence permit. Marriage or union needs 3 years with a Portuguese child or 6 years without, a great-grandchild route was created, and the Sephardic route was closed to new cases. Applications filed earlier stay under the previous law.
Yes. Portugal allows dual and multiple nationality, so you generally don't need to renounce your original nationality. Check your home country's own rules, because some countries require you to renounce when you acquire another nationality.
Citizenship does not by itself decide where you pay tax. Tax residence depends on where you live and spend your time, so a Portuguese passport alone does not make you a Portuguese tax resident. Get tax advice before relocating.
A Portuguese and EU passport and citizen card, the right to vote, the freedom to live, work and study anywhere in the EU without permits, and visa-free travel to a very large number of destinations. Children can often acquire Portuguese nationality through you.
Mainly naturalization after the required legal residence period, or marriage or union with a Portuguese citizen. Naturalization requires the current residence period, a clean record and evidence of integration, plus Portuguese language proof for most nationalities.
Under the 2026 reform, 10 years for most nationals and 7 years for CPLP and EU nationals, counted from the first residence permit. This is up from the previous 5-year requirement for applications filed before 19 May 2026.
A birth certificate meeting Portuguese standards, criminal record certificates, and where applicable marriage certificates, all with certified translation and apostille. Descent cases also need the records of each generation.
Often, yes, even if your parents weren't born in Portugal, subject to current legal conditions and documents proving every generation.
It varies by route, by documents and by IRN workload, and it has changed over time. We give a realistic estimate after reviewing your documents.
Set by the IRN and periodically updated. Apostille, translation and legal assistance are separate costs. Confirm current fees at the time of application.
Understanding the legal basis is key. Depending on circumstances, you may correct and resubmit, or pursue an administrative or judicial appeal.
Not always required, but applications are commonly filed with a bar-registered lawyer, especially for descent-based, marriage-based, or complex cases.
If you would like professional guidance, consult an experienced citizenship lawyer in Portugal who can review your case, advise on eligibility, and support you with documentation and submissions. Clara Silva Costa Lawyers (CSC Lawyers) was founded 14 years ago in Lisbon and focuses on representing international clients.
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