On your first day in Portugal, someone will ask you for it. The estate agent, to prepare the lease. The bank, before even handing you a form. The supermarket cashier, with her end-of-receipt "Contribuinte?" (taxpayer number?). The NIF in Portugal is your tax number, and without it almost everything grinds to a halt. The good news: it is free, yours for life, and often the simplest step in your whole move.
Here is how to get it in person or remotely, which papers to bring, and what changes depending on where you are coming from, with France, Belgium and Switzerland as examples.
What is the NIF in Portugal, and why do you need it so quickly?
The Número de Identificação Fiscal is a nine-digit number issued by the Autoridade Tributária e Aduaneira, the tax authority everyone simply calls the Finanças. Portuguese citizens receive it automatically with their identity card. You have to apply for it.
According to the Finanças, you need it to work, sign a contract, open a bank account and register with social security. In real life the list is longer: a rental contract, an internet subscription, buying a car, an electricity bill. It is the key that opens every other door, which is why it pays to apply for it first, sometimes before you have even packed.
Two rules to keep in mind. First, each person has only one Portuguese tax number in their lifetime. If you have already had one, even twenty years ago for a holiday home, do not apply for another: ask for it to be traced. Second, every member of the family needs their own, children included, for school, healthcare and deductible expenses.
How do you get a NIF in Portugal in person?
The classic route is the counter. You go to a Serviço de Finanças (tax office) or a Loja do Cidadão, the large public service centres found in towns and cities. But do not just turn up: they see people by appointment.
There are two ways to book. On the Portal das Finanças, under Contactos, then Atendimento por Marcação: you choose the option for people without a Cartão de Cidadão (the Portuguese identity card), the subject Identificação, then Pedido de NIF, and you enter your identity document number in the comments. Or by phone, through the Finanças support centre (+351 217 206 707), on working days from 9 am to 7 pm.
On the day, you present your papers and the number is usually given to you during the appointment. The waiting time is mostly the time it takes to get a slot: it varies by office and by season, and Lisbon in midsummer is not Bragança in November.
There is also a one-stop service for foreigners who have already settled: a Portuguese public service lets you apply in one go for the NIF, the NISS (social security number) and the SNS utente number (national health service). EU citizens can use it, but the official page, updated in September 2026, specifies that it is offered in only twelve Espaços Cidadão (citizen service points). Handy if one of them is near you.
Which documents should you bring to the Finanças?
The list is short, but every item counts.
| Document | What you need to know |
|---|---|
| Identity document | Valid identity card or passport. For an EU citizen, the identity card is enough. |
| Proof of address abroad | Required if the address is not on your identity document. Bring a recent document in your name. |
| Originals | Originals or certified copies; a plain copy is accepted only if you show the original at the counter. |
| Translation | Documents in a foreign language must be translated and certified (notary, lawyer, solicitador or recognised chamber of commerce). |
The classic trap is the address. The French identity card does not show one, and neither does the passport: if you are moving from France, you will always need proof of your address there (tax notice, recent energy bill, home insurance certificate). The Belgian eID card does not display it to the naked eye either: the simplest option is to ask your municipality for a residence certificate. From Switzerland, a certificate of residence issued by the residents' registration office (contrôle des habitants) does the job.
If you have already lived in Portugal for more than three months, the file changes: with your identity document and your EU citizen's certificado de registo, issued by the town hall, you can be registered directly as a resident. That certificate has its own guide: the EU residence certificate in Portugal, step by step.
Can you apply for a NIF in Portugal from abroad?
Yes, and it is often a good idea: renting a flat or opening a bank account in Portugal before you arrive means already having this number.
A remote application goes through a proxy, whom the Finanças call your legal representative. It can be a lawyer, a solicitador (a Portuguese legal professional) or a person you trust. They log in to the Portal das Finanças, open the e-balcão (the official messaging service) and file the request under Registo Contribuinte, with the scanned documents: a copy of your identity document, proof of address if needed, and a power of attorney giving them authority to do so.
One detail that costs weeks: the signature on the power of attorney must be certified, unless it is made out to a lawyer or a solicitador identified as such. The Finanças also reserve the right to check the documents afterwards.
A NIF obtained this way is issued with non-resident status. That is normal, and we come back to it below.
Do you need a tax representative for a NIF in Portugal?
This is the question that causes the most damage, because two roles get mixed up. The proxy who files your application is not necessarily your tax representative (often called a fiscal representative), the person who receives letters from the Finanças on your behalf.
If you live in the EU, the answer is no. Residents of the European Union, Norway, Iceland and Liechtenstein are under no obligation to appoint a tax representative, either before or after they move (Finanças FAQ 4627). Some companies still charge newcomers for this service: it is optional, and you can say no.
If you live in Switzerland, it is different. Switzerland is in neither the EU nor the EEA, so as long as you live there, the Finanças treat you as a third-country resident. As soon as you create a tax relationship with Portugal (buying a home or a car, an employment contract, self-employed work), you must, within 15 days, either appoint a tax representative living in Portugal or sign up for electronic notifications on the Portal das Finanças. This second option, which is free, has exempted you from needing a representative since Decreto-Lei n.º 44/2022.
Two nuances if you are coming from Switzerland. If you start a self-employed activity subject to VAT, the representative remains compulsory, even with electronic notifications, and must be appointed before the activity begins. And forgetting is expensive: the fine ranges from €75 to €7,500, and comes with the loss of certain rights to lodge complaints. Once you have settled in Portugal and registered as a resident, the obligation disappears.
If all this seems dense, that is normal: it is exactly the kind of file where you want someone at your side. At Hello Expat, the rule is simple: Moovy, our AI assistant, prepares your file, then you apply for your NIF at the Finanças, yourself or through a tax representative.
Resident or non-resident: when should you change the address on your NIF?
The number never changes; only your status does. When you apply from abroad, your NIF in Portugal is first registered as non-resident. When you meet the conditions to be a Portuguese tax resident, you must ask the Finanças to change your address and status. The best-known criterion, recalled by the Portuguese public service, is living in Portugal for more than 183 days a year, but it is not the only one.
Careful: this is not just a form. Switching your address to Portugal means declaring yourself a Portuguese tax resident. It must be consistent with the departure you declare to the tax authority of the country you are leaving (France, Belgium or Switzerland, for example) and with the tax treaty between the two countries. Too early, and you risk double taxation; too late, and you stay in a shaky position. If your situation is out of the ordinary (income in several countries, property, self-employment), get advice before you click.
How much does a NIF cost and how long does it take?
Nothing. The gov.pt guide updated in September 2026 confirms it: applying for a NIF is free. What can cost money are the services around it, such as a lawyer for the power of attorney or a professional tax representative when one is compulsory.
As for timing, count the time it takes to get an appointment, then a few minutes at the counter. Remotely, add the time to prepare and certify the power of attorney, then the processing time at the Finanças.
Once you have the precious number, keep it on your phone: you will give it ten times a week. At the supermarket, for example, giving it at the till records your spending in the e-fatura system, and some of that spending then reduces your tax. We explain this ritual in our guide to supermarkets in Portugal. The logical next step is housing: our article on renting a flat in Portugal takes over from here.