How to Get a NIF in Portugal as an American or Canadian (2026)

If you are moving to Portugal, your NIF (número de identificação fiscal) is one of the first things you’ll need. It’s required for signing a lease, opening a bank account and setting up utilities, and it appears throughout your visa and residence paperwork.

This guide explains what the NIF is, the ways Americans and Canadians can get one, which documents you need, the fiscal representative rules that confuse most people, and what to do when you move. It is based on the Portuguese tax authority’s (AT) own guidance, current as of November 2026.

What Is a NIF?

The NIF is Portugal’s tax identification number. It has nine digits, and numbers for individuals currently start with 3. You keep the same number for life, whether you are registered as a non-resident or a resident.

The tax authority describes the NIF as essential for entering into contracts, opening a bank account and working in Portugal. In practice, you’ll need it to:

• sign a long-term lease or buy property;
• open a Portuguese bank account;
• set up electricity, water, internet and a mobile phone contract;
• buy a car or register a business.

Applying for a NIF is free. Anyone, Portuguese or foreign, resident or not, can apply.

Three Ways to Get a NIF

1. In person in Portugal

You can apply at any tax office (Serviço de Finanças) or Loja do Cidadão, by appointment only.

• Book through the Portal das Finanças (Contactos > Atendimento por Marcação), choosing the option for a NIF request or address change for people without a Portuguese Citizen Card.
• Or call the tax authority on +351 217 206 707 (working days, 9:00 to 19:00).

This is a good option if you are visiting Portugal before your move, for example on a scouting trip.

2. Through a lawyer, solicitor or representative

A representative with your power of attorney can apply for you, either in person at a tax office or online through the Portal das Finanças e-balcão. AT is clear that the online application must be submitted by a legal representative. You can’t file it yourself from abroad.

A power of attorney given to a Portuguese lawyer (advogado) or solicitor (solicitador) doesn’t need a certified signature. This is the route most Americans and Canadians use, because it means the NIF can be ready before you travel.

3. Through a Portuguese consulate

Practice varies between consulates. The Portuguese consulate in Newark states that it doesn’t issue tax numbers and directs foreigners to the tax authority. The consulate in Boston describes an application that it forwards to the tax authority. If you want to go this way, check with the consulate that covers your state or province first.

Documents You Need

• Your passport (or another civil identification document).
• Proof of your address abroad, unless your ID already shows it. A recent utility bill or bank statement is typical.
• If a representative applies: their identification and your power of attorney.

Documents must be originals or certified copies. Plain copies are only accepted alongside the originals. Documents in a language other than Portuguese need a certified translation, done by a notary, a chamber of commerce, a lawyer or a solicitor.

Fiscal Representative or Electronic Notifications?

This is where most online advice goes wrong, so here is what the tax authority actually says.

• You don’t need a fiscal representative to be given a NIF. AT states that appointing one isn’t mandatory when a NIF is assigned to a non-resident.
• The 15-day rule. Within 15 days of either of these, you must appoint a fiscal representative or join electronic notifications:
  • you form a tax relationship in Portugal, for example by owning property or a car registered there, or working there;
  • you register a tax address outside the EU/EEA, such as your US or Canadian address.
• Electronic notifications replace the representative. Since July 2022, joining the tax authority’s electronic notification system (in the Portal das Finanças) or the ViaCTT electronic mailbox removes the duty to appoint a representative.
• One exception: if you live outside the EU/EEA and are self-employed in Portugal, you still need a VAT-registered fiscal representative, appointed before you start the activity.
• Penalty: failing to appoint a required representative can lead to a fine of €75 to €7,500.

For most Americans and Canadians, joining electronic notifications is the simpler choice. You can do it in the Portal das Finanças under A minha Área > Notificações e Citações > Gerir canais. Notifications posted there count as delivered on the fifth day, so check the portal regularly.

If you do appoint a representative, they must be domiciled in Portugal, and a foreigner can only act as one if they hold a valid residence permit and are registered as resident.

Getting Your Portal das Finanças Password

To use the tax portal yourself, register at the Portal das Finanças (“Registar-se”). The password (senha) is then sent only by post to the tax address on record. If you have a fiscal representative, it goes to their address in Portugal. The posted password works once, and you then set your own.

Once you are resident and have your residence card, you can also activate the Chave Móvel Digital, Portugal’s digital login, which lets you set the password online.

When You Move to Portugal

Your NIF stays the same, but your tax status changes. Under Portuguese tax law you become a tax resident if you spend more than 183 days in Portugal in any 12-month period, or have a home there that you intend to keep as your habitual residence. You then have 60 days to update your tax address to Portugal.

• Update it through the Portal das Finanças e-balcão or in person by appointment. The ordinary address-change screen doesn’t work for switching from non-resident to resident.
• Non-EU nationals need their passport plus a valid residence permit, an AIMA appointment confirmation or a receipt for a pending AIMA application.
• If those documents don’t show your address, bring a lease, property deed or employment contract.
• If you change the address online, the change only takes effect after you enter a code that the tax authority posts to your new address.

After that, Portugal taxes you as a resident. Read our guide to US and Portuguese taxes for Americans in Portugal.

How Relocate360 Helps

NIF registration is included in all our relocation packages. Our team in Porto handles the application, the electronic notification setup and the address update when you arrive. We sequence it with your bank account, lease and visa file, so nothing holds up your consulate appointment. Book a free briefing to get started.

Sources

• Autoridade Tributária e Aduaneira, NIF for foreign non-resident citizens (leaflet) and Apply for your NIF.
• gov.pt, How to request a NIF and NISS for foreigners (the NIF is free).
• AT, Electronic notifications, Portal passwords and Tax address of foreign citizens (leaflets).
• Consulates of Portugal in Newark and Boston.

Moving from Canada? The visas are the same, but departure tax, provincial health cover, CPP, OAS and RRSPs need their own plan. Read our guide to moving to Portugal from Canada.