Getting NIF in Portugal is the very first task on every expat family’s list — and for good reason. The NIF stands for Número de Identificação Fiscal. It is Portugal’s nine-digit tax identification number, issued by Finanças. Without it, you cannot sign a lease, open a bank account, apply for a visa, register with the health service, or enrol children in school.
This guide covers the current 2026 process — including the important distinction between EU and non-EU applicants, what changed after Brexit for British families, and how to get your NIF before you arrive if you need it for a visa application.
⚠️ Important: Most NIF guides still reference SEF — the immigration service that was replaced by AIMA in October 2023. The NIF itself is issued by Finanças (the tax authority), not AIMA, so the core process is unchanged — but any guide that references SEF is out of date. The information in this article reflects the current 2026 process.
Getting NIF in Portugal: What You’ll Need It For
In Portugal, the NIF comes up constantly — more so than comparable numbers in the UK, US, or most other countries.
You will need it for:
- Applying for a D7, D8 (Digital Nomad), or other residency visa
- Opening a Portuguese bank account
- Signing a rental contract
- Registering with the SNS (public health service)
- Enrolling children in school
- Setting up utilities (water, electricity, internet)
- Buying a car or property
- Filing taxes in Portugal
- Signing a mobile phone contract
- Everyday purchases (supermarkets, pharmacies, and restaurants often ask for your NIF to issue a tax receipt)
Without a NIF you cannot complete any of these. The practical consequence for families: if you arrive in Portugal without a NIF, you may not be able to sign a lease, which means you can’t prove an address, which means you’re stuck. Getting the NIF sorted before you arrive — or as the very first task after arriving — is not optional.
EU/EEA Families vs Non-EU Families: Two Different Processes
The process for getting a NIF depends on your nationality and where you’re applying from. There are two main paths.
Getting NIF in Portugal as an EU, EEA, or Swiss Citizen
If you hold an EU, EEA (Norway, Iceland, Liechtenstein), or Swiss passport, the process is straightforward:
- You can apply in person at any Finanças (tax office) in Portugal — free of charge
- You do not need a fiscal representative
- You can use an address in your home country if you’re applying before moving
- The NIF is usually issued on the spot — bring your passport or national ID card and proof of address
You can also wait until you arrive in Portugal and get it at the local Finanças office, which is what many EU families do.
Getting NIF in Portugal as a Non-EU Citizen
If you hold a non-EU passport — including UK passports since Brexit — the process is more involved.
Non-EU applicants who are not yet resident in Portugal must appoint a fiscal representative. This is a Portuguese tax resident who acts as your official point of contact with Finanças. The requirement is set out in Article 19 of the General Tax Law.
The fiscal representative can be:
- A lawyer or tax firm (recommended)
- Any Portuguese resident willing to take on the responsibility (technically allowed but not recommended — the liability is real)
Once you become a Portuguese tax resident yourself (generally after 183 days in the country, or by registering a Portuguese address with Finanças), you can cancel the fiscal representation arrangement.
For British families specifically: Before Brexit, UK citizens could get a NIF as EU nationals. Since January 2021, however, British passports are classified as non-EU. Fiscal representation is therefore required unless you’re already a Portuguese resident. This catches many families off guard — particularly those who obtained their NIF before Brexit.
Getting Your NIF in Portugal In Person: Step-by-Step
This is the process for applying at a Finanças office in Portugal — the most common route for EU families and for non-EU families already in the country with a fiscal representative.
Step 1: Book an appointment (or walk in)
Walk-ins are usually accepted. However, Finanças offices in Porto and Lisbon can have long queues. Arriving before 9am on a weekday is the most reliable strategy. For busy offices, you can try booking an appointment through the Portal das Finanças website. Note that the online system requires an existing NIF to log in. For first-time applicants, calling the office directly (+351 217 206 707) or going in person is therefore the practical route.
Offices outside city centres tend to be quieter. If you’re flexible, a Finanças office in a smaller Porto municipality (such as Matosinhos or Vila Nova de Gaia) will typically have shorter waits than the central Porto office.
Step 2: Bring the right documents
For EU/EEA citizens:
- Valid passport or national ID card
- Proof of address (bank statement, utility bill, or rental contract — can be a foreign address if applying before moving)
For non-EU citizens (in person with a fiscal representative):
- Valid passport
- Proof of address
- Details of your fiscal representative (they may need to be present, or provide a power of attorney letter)
- €10.20 application fee (non-EU applicants only)
Step 3: Complete the application at the counter
The process at the counter takes around 30 minutes. Staff will enter your details, verify your documents, and issue your NIF. In most cases the number is issued immediately — you leave with a document confirming your nine-digit NIF.
Note: Not all Finanças staff speak English fluently. Bringing a Portuguese-speaking friend or a printed note explaining your request (“Quero pedir um NIF — I want to apply for a NIF”) helps, particularly at smaller offices.
Step 4: Get access to Portal das Finanças
Once you have your NIF, you’ll want to set up online access to Portal das Finanças — this is where you’ll file taxes, manage your fiscal details, and eventually cancel fiscal representation if applicable. The portal password is sent by post to your registered address (or your fiscal representative’s address). This typically takes 2–3 weeks.
Getting NIF in Portugal Before You Arrive: The Remote Route
Non-EU families applying for a D7 or D8 visa need their NIF before they can complete the visa application — which means they need it before arriving in Portugal. EU families in the visa application process often find it useful to get it early too.
The remote route involves appointing a fiscal representative — typically a lawyer or NIF service. They apply on your behalf via the Portal das Finanças e-Balcão system. You provide a power of attorney to authorise them.
How it works:
- Choose a fiscal representative or NIF service
- Send them a signed power of attorney (some services provide the template) plus copies of your passport and proof of address
- They submit the application to Finanças on your behalf
- NIF is issued within approximately 3–10 business days
- They send you your NIF confirmation document
Cost: Professional NIF services typically charge €50–€150 for the application. Ongoing fiscal representation costs an additional €200–€600 per year. This is required for non-EU non-residents. Many services bundle the first year of representation into the application fee.
Services used by expat families in Portugal include Portugalist’s comparison tool, Anchorless, and various Portuguese law firms. Ask in expat Facebook groups (“Brits in Portugal”, “Americans and Friends in Porto”) for current recommendations — the market changes and quality varies.
Getting NIF in Portugal for Your Children
Children need their own NIF — for school enrolment, health registration, and to be listed on tax declarations. The process is the same as for adults, with parents applying on their behalf.
Bring:
- Child’s passport or birth certificate
- Your own NIF (already obtained)
- Proof of address
For non-EU children, a fiscal representative is required unless the family is already resident in Portugal.
Common Problems When Getting NIF in Portugal
“I need a NIF to rent an apartment, but I need an address to get a NIF.”
This is the classic circular problem. The solution: you can use a foreign address when applying for your NIF — you don’t need a Portuguese address. Get the NIF first using your home country address, then update it to your Portuguese address once you’ve signed a lease.
“The office wants my fiscal representative present but they’re not available.”
If using a professional service, they will typically provide a power of attorney that allows you to attend without them. Confirm this with your representative before visiting the office.
“I applied online but the process has stalled.”
The online route via e-Balcão can be slower than in-person for first-time applicants. If time is pressing, going in person to a quieter Finanças office is typically faster.
“My NIF guide says to go to SEF.”
SEF was replaced by AIMA in October 2023. NIF applications go to Finanças — not AIMA. AIMA handles residence permits and visa-related immigration matters; Finanças handles the NIF. If a guide tells you to go to SEF for your NIF, it’s outdated.
NIF vs NISS: What’s the Difference?
You’ll quickly come across both numbers when moving to Portugal:
- NIF (Número de Identificação Fiscal) — your tax identification number, issued by Finanças. Get this first.
- NISS (Número de Identificação de Segurança Social) — your social security number, issued by Segurança Social. Needed if you plan to work in Portugal or want to access social security benefits. Apply for the NISS after you have your NIF.
Since April 2025, AIMA requires the NISS for most residence permit applications — so getting both numbers sorted early matters more than it used to.
What to Do After Getting NIF in Portugal
Once your NIF is in hand, these are the immediate next steps for most families:
- Open a Portuguese bank account — most banks require the NIF. Millennium BCP and Banco Best are commonly used by expats.
- Register your rental contract with Finanças — landlords are required to do this within 30 days of signing. Confirm they’ve done it.
- Apply for your NISS — if you plan to work or want social security access.
- Register with the SNS — to access Portugal’s public health service. Your NIF and proof of address are required.
- Enrol children in school — your NIF and your children’s NIFs are needed for enrolment.
- Set up Portal das Finanças access — once your postal password arrives.
This article reflects the NIF application process as of 2026. Portuguese tax law and administrative processes change periodically — always verify current requirements with a licensed tax professional or the Finanças website before applying. This is not tax or legal advice.
Still working through your move to Portugal? Our free family relocation checklist covers the NIF, NISS, SNS registration, school enrolment timelines, and your first 30 days on the ground.