Marrying in Portugal as a Foreigner: The Conservatória Process, Documents, Costs, and União de Facto Explained for 2026

Who This Guide Is For

Portugal does not require either partner to be a Portuguese resident, a Portuguese citizen, or even to have ever set foot in the country before to get legally married on Portuguese soil. Couples fly in from the United States, Brazil, the UK, and across the EU every week to marry at a Conservatória do Registo Civil or at a venue in the Algarve, Lisbon, or the Douro. Foreign residents already living in Portugal use the same process, just with fewer apostilled documents to send back and forth.

This guide covers the civil legal pathway, Catholic-church marriage, the cost of each, and the união de facto alternative for couples who want the legal protections of a shared life but not the wedding.

Types of Marriage Recognised in Portugal

Civil marriage (casamento civil): the default. Performed by a registrar either inside the Conservatória or at a venue of the couple's choice. All civil marriages, straight or same-sex, have identical legal effect. Same-sex marriage has been fully legal in Portugal since 2010, and same-sex couples have had equal adoption rights since 2016.

Catholic marriage (casamento católico): recognised as legally binding under the 1940 Concordata with the Holy See. A Catholic wedding held in a Portuguese parish is automatically registered as a civil marriage. Both partners must be Catholic and neither can be divorced (a civil divorce does not unlock a Catholic wedding; annulment does).

Other religious ceremonies: weddings in a mosque, synagogue, Protestant church, Hindu temple, or under a humanist or pagan celebrant are not legally recognised. Couples wanting one of these ceremonies have to hold a separate civil marriage at the Conservatória either before or after.

Symbolic weddings: popular on Algarve cliffs and Douro quintas. These carry zero legal weight in Portugal. The couple must already be legally married, or have a civil ceremony scheduled separately.

Who Can Marry in Portugal

• Minimum age: 18, with no exception. Being under 18 is an absolute (dirimente) impediment to marriage under Article 1601(a) of the Civil Code. If you researched this before April 2025, you may be carrying the old rule: until then, 16- and 17-year-olds could marry with parental or guardian consent and Conservatória authorisation. That route was abolished by Lei n.º 39/2025 of 1 April 2025, in force from 2 April 2025. There is no parental-consent route, no Conservatória authorisation route, and no exception of any kind. The same law scrapped emancipation by marriage and added child, early and forced marriage to the situations that trigger child-protection intervention under the Lei de Proteção de Crianças e Jovens em Perigo. The only carve-out is transitional and backward-looking: marriages of 16- and 17-year-olds lawfully celebrated before 2 April 2025 remain valid. It opens nothing for anyone planning a wedding now.
• Marital status: Both parties must be free to marry. A previous marriage must be ended by divorce, annulment, or death, and proof must be produced.
• Capacity: Neither party may be under court-ordered accompanied-person restrictions on marriage, or suffering from medically certified dementia.
• Relationship: Marriage is barred between direct ascendants and descendants, full or half siblings, adoptive parents and adopted children, and between a person and anyone convicted of killing that person's former spouse.

There is no residency, visa, or nationality requirement. Tourists on a Schengen 90-day stamp can marry on the same terms as residents.

The Conservatória Process (Processo Preliminar)

Every legal marriage in Portugal, civil or Catholic, starts with a processo preliminar de casamento: a formal declaration of the intention to marry. The Instituto dos Registos e do Notariado (IRN) sets no geographical restriction on where you file it. The process can be opened at any Conservatória do Registo Civil in the country, whichever is most convenient, regardless of where either partner lives or where the wedding will be held. It can also be opened online, or by the parish priest or the minister of a religious community established in Portugal, on formal request. The IRN asks couples to start at least one month before the date they want.

The online route is an authentication and citizenship constraint, not a location one. The CivilOnline service (and the equivalent service page at conservatoria.justica.gov.pt) is open only to Portuguese citizens, and to Brazilian citizens who hold the general statute of equal rights and duties under the Treaty of Porto Seguro, aged 18 or over, authenticating with a Cartão de Cidadão or Chave Móvel Digital. A couple with no Portuguese identification and no Chave Móvel Digital cannot use it, whether they are standing in Lisbon or sitting in Los Angeles. They file in person at any Conservatória, or through a representative holding a power of attorney with special powers. Prenuptial agreements cannot be signed through the online channel at all, and the IRN's own guidance for foreign nationals sends them to a Registo Civil counter to open the process.

The Conservatória publishes the intent on its public platform for eight days. If no impediment is raised during that window, it issues the certidão de capacidade matrimonial: the authorisation to marry. Expect the full application, publication, and authorisation to take four to six weeks, so budget at least six before setting a wedding date. Once the marriage is authorised, you have six months to hold the ceremony; miss that and the process has to be re-opened.

Documents You Need

Core list for both partners:

• Birth certificate (certidão de nascimento): issued in accordance with the law of your own country. The IRN does not attach a six-month validity limit to this document, and lists it separately from the certificate that does carry one. That said, practice varies between Conservatórias and some registrars ask for a recent copy anyway, so confirm with the specific office you will file at before you order and apostille one.
• Passport or Cartão de Cidadão / residence permit: for identification.
• Certificate of No Impediment (certificado de capacidade matrimonial): proof you are legally free to marry, issued by the competent authority in your country less than six months before you file. This is the document the six-month rule actually attaches to. In the US this is a court affidavit of no impediment; in the UK it is the Certificate of No Impediment from your local register office. EU citizens can usually get it from their consulate in Lisbon. If your country does not issue such a certificate at all, the IRN accepts a declaration to that effect in its place.
• Final divorce decree or death certificate of any previous spouse.
• NIF (Portuguese tax number): requested for foreign residents but not a legal blocker for non-residents.

Apostille and Translation Rules

Documents issued outside Portugal must be legalised with a Hague Apostille from the issuing country, unless a bilateral agreement waives it (rare; Brazil-Portugal notably does, between certain document types).

Translation rules are more generous than most EU countries:

• Documents in Portuguese, English, Spanish, or French are generally accepted without translation at most Conservatórias, although local practice varies and the registrar has final say.
• Documents in any other language need a certified translation (tradução certificada) performed in Portugal by a lawyer, notary, or certified translator, or legalised at a Portuguese consulate abroad.

The six-month clock is not a blanket rule across the whole file: it belongs to the certificate of no impediment. Where a document does carry a validity window, that window runs from the document's own issue date, and an apostille applied later does not reset it. Order the apostille as soon as the certificate is issued rather than letting the certificate sit in a drawer first, or you can arrive at the counter with a freshly stamped document that is already out of date underneath.

How Much It Costs

Official Conservatória fees for the standard processo preliminar and civil ceremony:

• Standard weekday civil marriage (Monday to Friday, normal hours, at the Conservatória): EUR 120
• Weekend, public holiday, or out-of-hours ceremony: EUR 200
• Off-site ceremony (at a hotel, quinta, restaurant, beach, or other venue): adds a supplement of roughly EUR 130-180 depending on the concelho
• Urgent process (processo urgente): can be requested for an additional fee, typically doubling the standard price

These fees cover the legal registration only. Translations, apostilles, certified document copies, a lawyer's fee for power of attorney, and any wedding-planner, venue, celebrant, or decoration costs are entirely separate. A destination wedding budget in the Algarve typically runs from EUR 5,000 for a very small ceremony to between EUR 25,000 and EUR 60,000 for a full weekend event.

Property Regimes: Choose Before You Marry

Portugal requires you to pick a property regime (regime de bens) as part of the application. The choice affects what happens to assets during the marriage and on divorce or death.

• Comunhão de adquiridos: the default if you pick nothing. Assets owned before the marriage stay personal; anything acquired during the marriage is shared.
• Separação de bens: each spouse keeps sole ownership of all assets, before and after. Required by law if either partner is over 60 or has children from a previous relationship at the time of marriage.
• Comunhão geral: all assets, including those owned before the marriage, become joint. Rare, and not available where separação de bens is mandatory.

A prenuptial agreement (convenção antenupcial) is signed at a Notary before the wedding if you want to deviate from the default regime. It cannot be done through the online channel.

The Ceremony Itself

• Witnesses: two required, one for each spouse. They must be at least 18 and can be any nationality. A passport, Cartão de Cidadão, or residence permit is enough.
• Duration: the legal part takes about 15 to 20 minutes. The registrar reads the legal text, takes the consent of each spouse, records the property regime, and registers the marriage on the spot.
• Language: the ceremony is in Portuguese. If either spouse does not understand Portuguese, the Conservatória will require a certified interpreter. This can be arranged privately or through a translation agency.
• Certificate: a certidão de casamento is issued on the day and is the document you will use to register the marriage abroad.

Registering Your Marriage Back Home

A Portuguese marriage is legally valid in every country that recognises civil marriage, but most will require you to register it domestically through the consulate. You will usually need:

• The original certidão de casamento, legalised with a Portuguese Apostille from the Procuradoria-Geral da República
• A certified translation into the country's official language where required
• The consular registration form for your home country

UK citizens can register at the British Consulate in Portimão or Lisbon. US citizens usually register at the US Embassy. Brazilians can register through the Consulado-Geral in Lisbon, and the Brazilian CIN biometric ID (now issued in Lisbon since April 2026) reflects the new marital status automatically.

União de Facto: the Legal Alternative to Marriage

For couples who want the legal protections of shared life without the wedding, Portugal offers a formal união de facto (registered partnership) regime.

• Qualification: two years of uninterrupted cohabitation in a relationship comparable to marriage. It is available to same-sex and opposite-sex couples, and to foreign residents.
• Evidence: proved with a declaração from the local Junta de Freguesia confirming shared address for the full two years, plus affidavits from two witnesses. Joint utility bills, rental contracts, and bank statements strengthen the file.
• Rights granted: most social-security spousal benefits, inheritance tax exemption, priority in hospital access for partner decisions, residence authorisation for the non-EU partner, and the right to adopt jointly.
• What it does not give: automatic property sharing (you fall under separação de bens by default), the Portuguese citizenship shortcut that married spouses enjoy, or the right to take the partner's surname.

A união de facto is not automatically recognised abroad. If one partner moves back to a country that does not recognise civil partnerships, the legal shield goes with them only to the extent the foreign jurisdiction mirrors it.

Common Pitfalls

• Assuming 16- and 17-year-olds can still marry with consent. This is the outdated rule readers are most likely to be carrying, and it was correct right up to 1 April 2025. Lei n.º 39/2025 abolished marriage of minors outright with effect from 2 April 2025 and made being under 18 an absolute impediment. Any wedding blog, law-firm page, forum post or older guide still describing a parental-consent or Conservatória-authorisation route for minors is describing law that no longer exists.
• Over-applying the six-month rule. It attaches to the certificate of no impediment, not to the birth certificate. The IRN sets no validity limit on the birth certificate, so do not assume one issued last year is automatically dead; equally, do not assume it will sail through, because individual Conservatórias have their own habits. Ask the office you will file at. An apostille stamped months later does not refresh the underlying document either way.
• Missing apostille. Foreign documents without a Hague Apostille from the issuing country will be rejected. Plan for two to six weeks of mail turnaround, depending on country.
• Assuming you must file where you live. There is no concelho rule. Any Conservatória in the country can open the process, wherever you live and wherever the wedding will be.
• Wrong regime. Comunhão geral is legally impossible where either party is over 60 or has prior children. The Conservatória will block it at the banns stage, but couples who assumed they had it sometimes only discover the default when drafting wills.
• Symbolic ceremonies. A ceremony with a celebrant on a Sintra hilltop is beautiful and legally worthless. Schedule the civil registration separately.

Key Contacts

• Instituto dos Registos e do Notariado (IRN): national body for civil registration. Marriage guidance at irn.justica.gov.pt; the online process runs through civilonline.mj.pt and conservatoria.justica.gov.pt. Linha Registos 211 950 500, weekdays 09:00 to 17:00.
• Conservatórias do Registo Civil: located in every concelho, and any of them can open your process. The one in Lisbon (Conservatória do Registo Civil de Lisboa, Rua Alexandre Herculano 112) handles international-couple weddings most weeks.
• Procuradoria-Geral da República: applies Portuguese apostilles to Portuguese documents for use abroad.
• Ordem dos Notários: for finding a notary to draw up a prenuptial agreement or power of attorney.

Last updated: 31 August 2026. Fees and procedures are set by national law but fine detail can vary between Conservatórias. Always check with the specific office you plan to marry in before booking flights.

Correction

Corrected on 31 August 2026. This guide previously said that 16- and 17-year-olds could marry in Portugal with parental or guardian consent and Conservatória authorisation, and listed parental consent among the required documents; that has been wrong since 2 April 2025, when Lei n.º 39/2025 of 1 April 2025 (Diário da República n.º 64/2025, Série I) abolished marriage of minors outright and made being under 18 an absolute impediment under Article 1601(a) of the Civil Code as consolidated on DRE. We also corrected two other errors in the same pass: the guide wrongly said the preliminary process had to be opened in the concelho where a partner lived or where the wedding would take place, when the IRN allows any Conservatória or the online service, and it applied the six-month document limit to birth certificates, when the IRN attaches that limit only to the certificate of matrimonial capacity. The dead portal link to registosonline.registos.justica.gov.pt has been replaced with the current services.