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NIF Explained: How to Get Your Portuguese Tax Number as a Foreigner, Step by Step

If you are planning to do anything in Portugal — rent an apartment, open a bank account, sign a phone contract, buy property, start a business, or even receive a package from abroad — you will need a NIF. The Numero de Identificacao Fiscal, also...

If you are planning to do anything in Portugal — rent an apartment, open a bank account, sign a phone contract, buy property, start a business, or even receive a package from abroad — you will need a NIF. The Numero de Identificacao Fiscal, also known as the numero de contribuinte, is a nine-digit tax identification number issued by the Portuguese Tax and Customs Authority (Autoridade Tributaria e Aduaneira, or AT). It is the single most important administrative step for any foreigner arriving in Portugal, and you should obtain it before almost anything else.

What Is a NIF and Why Do You Need One

The NIF is Portugal s equivalent of a Social Security Number (US), National Insurance Number (UK), or Tax File Number (Australia). It identifies you for all tax purposes and is required for virtually every financial and administrative interaction in the country.

You will need your NIF to:

  • Open a Portuguese bank account
  • Sign a rental contract or buy property
  • Set up electricity, water, gas, internet, and mobile phone contracts
  • Register with the tax authority and file your annual IRS tax return
  • Register with Social Security (Seguranca Social) and the National Health Service (SNS)
  • Start a business or register as a freelancer (trabalhador independente)
  • Buy a car or register a vehicle
  • Receive invoices with your tax number — which can earn you tax deductions through the e-fatura system

In short: without a NIF, you cannot function in Portugal. It is the first piece of paperwork every immigrant, expat, retiree, digital nomad, and property buyer must obtain.

Who Needs a NIF

Everyone. Portuguese nationals receive a NIF automatically when they are issued a Cartao de Cidadao (Citizen s Card). Foreign nationals — whether EU, EEA, Swiss, or third-country citizens — must apply for one. You need a NIF even if you are a non-resident who simply wants to buy property or invest in Portugal.

How to Apply: EU, EEA, and Swiss Citizens

If you hold a passport or national ID card from an EU, EEA, or Swiss country, the process is straightforward.

What you need:

  • Your passport or national identity card
  • Proof of address in Portugal (a utility bill, rental contract, or property deed) — or, if you are not yet a resident, proof of address in your home country

Where to apply:

  • In person: Visit any Servico de Financas (tax office) or Loja do Cidadao (Citizen s Shop). You can book an appointment by calling 217 206 707 (weekdays 9:00-19:00). Walk-ins are accepted but expect longer waits.
  • Processing time: The NIF is issued on the spot. The entire process typically takes 15-30 minutes.

Important: EU, EEA, and Swiss citizens who already live in Portugal do not need a fiscal representative. If you are a non-resident (e.g. buying property remotely), you also no longer need a fiscal representative as of the 2022 law change — as long as your home country is within the EU/EEA.

How to Apply: Non-EU Citizens

If you hold a passport from outside the EU, EEA, and Switzerland, the process depends on whether you are already a resident in Portugal.

If you are already a resident in Portugal:

What you need:

  • Your passport
  • Your residence permit (titulo de residencia) or visa for Portugal/Schengen Area
  • Proof of address in Portugal

You can apply in person at any Servico de Financas or Loja do Cidadao. No fiscal representative is required if you have a Portuguese address.

If you are a non-resident (applying from abroad or before obtaining residency):

What you need:

  • Your passport
  • Proof of address in your home country
  • A fiscal representative resident in Portugal (see below)

Online option: Non-EU residents can apply remotely through the e-balcao portal of the Portal das Financas (sitfiscal.portaldasfinancas.gov.pt/ebalcao/home). Your fiscal representative can submit the application on your behalf using their Digital Mobile Key or Tax ID credentials.

The Fiscal Representative: Who Needs One and Why

A fiscal representative (representante fiscal) is a person or company resident in Portugal who acts as your point of contact with the tax authority. The representative receives official correspondence on your behalf and is responsible for ensuring you meet your tax obligations.

Who needs a fiscal representative:

  • Non-EU/EEA citizens who do not yet have a residence address in Portugal
  • Anyone who holds Portuguese tax obligations but lives in a country outside the EU/EEA

Who does NOT need one:

  • EU/EEA/Swiss citizens (regardless of whether they are resident or non-resident)
  • Non-EU citizens who are already resident in Portugal with a valid address

Options for a fiscal representative:

  • A friend or family member who is a legal resident in Portugal
  • Your Portuguese lawyer or accountant
  • A specialist NIF service provider — several companies offer this as a paid service (typically EUR 50-200 for the initial appointment plus an annual fee of EUR 50-150)

Once you become a resident and register a Portuguese address with the tax authority, you can remove your fiscal representative and manage your tax affairs directly.

Applying Online via the Portal das Financas

Portugal s tax authority has been expanding its digital services, and non-EU citizens can now apply for a NIF remotely through the e-balcao (electronic counter) on the Portal das Financas. The process requires a fiscal representative to submit the application, and the applicant must provide scanned copies of their passport and proof of address.

Several private companies also offer NIF application services entirely online, acting as both the fiscal representative and the application handler. These services typically cost EUR 150-250 and can deliver a NIF within a few business days.

EU/EEA citizens who are already in Portugal generally find it faster and simpler to visit a tax office in person.

Combined Application: NIF, NISS, and SNS in One Step

Foreign nationals who already have a Portuguese address can apply simultaneously for three essential numbers through the gov.pt portal:

  • NIF — tax identification number (Autoridade Tributaria)
  • NISS — Social Security identification number (Seguranca Social)
  • SNS number — National Health Service identification (Servico Nacional de Saude)

This combined application streamlines the process significantly and is available through a single digital request.

Cost

Applying for a NIF is free of charge. There is no government fee. The only costs involved are for fiscal representative services (if required) and any optional professional assistance.

What to Do After You Get Your NIF

Once you have your NIF, take these immediate steps:

  1. Register on the Portal das Financas (portaldasfinancas.gov.pt) — this gives you access to your tax account, e-fatura invoices, and digital correspondence from the tax authority. You will need to request an access password, which is sent by post to your registered address.
  2. Start asking for invoices with your NIF — in Portugal, you can ask any business to include your NIF on receipts. These invoices are automatically reported to the tax authority through the e-fatura system and can earn you income tax deductions of up to EUR 250 per year in categories like healthcare, education, and restaurants.
  3. Open a bank account — most Portuguese banks require a NIF to open an account. Bring your NIF, passport, and proof of address.
  4. Register your address — if you have moved to Portugal, update your fiscal address on the Portal das Financas or at your local tax office.

Common Mistakes to Avoid

  • Waiting too long: Get your NIF as early as possible — ideally within your first week in Portugal. Many other processes (bank account, rental contract, utilities) depend on having it.
  • Using a fiscal representative when you do not need one: If you are an EU/EEA citizen, you do not need a representative regardless of your residence status. Some paid services market this unnecessarily.
  • Forgetting to update your address: If you move within Portugal or change from a non-resident to a resident, update your address with the tax authority. Failing to do so can result in missed correspondence and potential penalties.
  • Not registering on the Portal das Financas: Your NIF number alone is not enough. Register online to access the e-fatura system, file taxes, and receive digital notifications.
  • Paying excessive fees for private NIF services: Some companies charge EUR 300 or more for a service that is free at any tax office. If you are already in Portugal and have the right documents, go to a Financas office yourself.

Useful Contacts

  • Tax Authority (AT) appointment line: 217 206 707 (weekdays 9:00-19:00)
  • Citizen helpline: 210 489 010 or 300 003 990 (weekdays 9:00-18:00)
  • Portal das Financas: portaldasfinancas.gov.pt
  • e-balcao (electronic counter): sitfiscal.portaldasfinancas.gov.pt/ebalcao/home
  • gov.pt combined NIF/NISS/SNS application: gov.pt (search for NIF cidadao estrangeiro)

The NIF system is governed by Decree-Law No. 14/2013 of 28 January (tax identification rules), Decree-Law No. 398/1998 of 17 December (general tax law), and Law No. 7/2007 of 5 February (Citizen s Card framework). The fiscal representative requirement was reformed by Law No. 56/2023 of 6 October, which eliminated the obligation for EU/EEA residents.

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