How to Get a Portuguese NIF from Dubai
The NIF is the Portuguese tax number, and almost nothing in Portugal works without it — not a bank account, not a lease, not a utility contract. You do not need to live in Portugal to have one, and you do not need to be there to get one. What you do need to understand is the tax representative question, because that is where this goes wrong for UAE residents.
One piece of good news first, and it is worth knowing before you start paying anyone to arrange this.
If you are getting a residence visa, a provisional NIF comes with it
Since a 2022 change to Portugal’s immigration law, a residence visa is issued together with a pré-autorização de residência. Article 58.º, paragraph 6 of Lei n.º 23/2007 says what that document carries: information on obtaining the residence permit, and the provisional allocation of tax, social security and national health service numbers.
So if your plan is a D7 residence visa or the remote-work route, and you are not in a hurry, the tax number arrives with the visa. Getting one in advance is something you do because you need it before the visa — to open an account, to sign a lease, to buy property, or because a consulate checklist asks for evidence you cannot produce without it.
That is a real reason, and it applies to a lot of people. Here is how it is actually done. If you would rather have the whole sequence handled as one piece of work, that is what our Portugal residency service is for.
What the NIF is, and who issues it
The Número de Identificação Fiscal, also called the número de contribuinte, is issued by the Autoridade Tributária e Aduaneira — the Portuguese tax authority, usually shortened to AT. The government service page describes it as “necessário para comprar bens ou serviços, fazer contratos ou abrir contas bancárias” — needed to buy goods or services, enter contracts, or open bank accounts.
The same page settles the eligibility question in one sentence: “Qualquer pessoa portuguesa ou estrangeira, residente ou não residente em Portugal pode pedir o número de contribuinte.” Any Portuguese or foreign person, resident or not, may request one.
Two details worth having. The number is nine digits, and AT’s own guidance for foreign nationals notes that it stays the same for life — it does not change when you switch from non-resident to resident status. And registration is not merely permitted but compulsory once you have Portuguese tax obligations or want to exercise rights before AT.
The three official routes
AT’s information leaflet on allocating a NIF to non-resident foreign nationals (PDF, July 2025) is the clearest official document on this, and it names two routes. A third exists through the consular network.
1. In person in Portugal, by appointment
At any Serviço de Finanças or Loja do Cidadão. The leaflet is explicit that this is not a walk-in: “O pedido de atribuição de NIF nos Serviços de Finanças ou nas Lojas do Cidadão, deve ser precedido de agendamento prévio do atendimento presencial.” Appointments are booked through the Portal das Finanças under Contactos > Atendimento por Marcação, choosing the option for people without a Portuguese citizen card, or by telephone on (+351) 217 206 707, weekdays 09:00 to 19:00.
2. Online through the e-balcão — but read the wording
This is the route most often described as “get your NIF online”, and AT describes it more narrowly than that. The leaflet says the request may be made through the e-balcão electronic service “através do representante legal (figura distinta do representante fiscal) do cidadão estrangeiro” — through the foreign national’s legal representative, which it takes care to distinguish from a tax representative. AT’s own FAQ repeats it: in the Portal das Finanças, through the e-balcão, by the legal representative of the foreign citizen.
The e-balcão also sits behind a Portuguese authentication login, which a first-time applicant with no NIF does not have. In practice that is why this route runs through someone acting for you under a power of attorney.
3. Through a Portuguese consulate
The Ministry of Foreign Affairs lists allocation of a NIF as a consular service, and says “O número de identificação fiscal pode ser solicitado por qualquer cidadão em qualquer momento no posto consular” — it may be requested by any citizen, at any time, at a consular post. The information the post asks for is listed there: full name without abbreviations, identity document number, residence, and the name and address of a tax representative in Portugal with the document establishing that representation.
One caution specific to the UAE. The Portuguese Embassy in Abu Dhabi publishes its own list of consular services — citizen card, certificates, consular registration, legalisation, notarial acts, passports, civil and criminal registry, visas — and NIF allocation is not on it. So treat the consular route as something the network offers in principle and ask the post that covers you, in writing, before you plan around it. Note also that where a post does handle it, the forwarding is the point: a consular post confirmed elsewhere describes its own role as sending the request on to AT, “a quem compete a atribuição do NIF” — the allocation itself remains AT’s.
Documents
AT’s FAQ for a non-resident foreign national lists two things:
- A civil identity document or legal equivalent — a valid passport
- A document showing the foreign national’s address, unless the address is already on the identity document
That second line matters for UAE residents, because a passport does not carry your Dubai address. Have something that does.
There is a visa wrinkle if you apply in person yourself. AT’s leaflet notes that where a third-country national files the request personally, the passport should show an entry visa for Portugal — excepting a passport bearing an entry visa for any EU country, or a national of a country that is visa-exempt for the Schengen area. UAE nationals fall into that exemption; most UAE residents do not.
On form and translation, AT is strict and it is worth reading twice: documents must be originals or certified copies, with plain copies accepted only alongside the originals, and “Os documentos em língua estrangeira, devem ser apresentados em cópia traduzida devidamente certificada” — foreign-language documents must be presented as a properly certified translation. If your supporting paperwork is Arabic-only, budget for that. Our guide to document attestation and translation covers how UAE-issued documents are made usable abroad.
If someone files on your behalf, add a power of attorney with the necessary powers, plus your own identity and address documents. AT waives signature recognition on a power of attorney granted to a lawyer or solicitador identified as such.
The tax representative question — where the confusion is
This is the part that generates the most contradictory advice, and the contradiction is not invented by bloggers. Two official Portuguese sources say different things, so here is both, and then what actually governs.
AT says a tax representative is not required at registration. Its leaflet states it twice, once in a highlighted note: “No ato de inscrição e atribuição de NIF a cidadão estrangeiro, como não residente, não é obrigatória a designação de representante fiscal.” The Ministry of Foreign Affairs consular page agrees: at the moment of the NIF request, appointing a tax representative is not compulsory.
The gov.pt service page says the opposite for non-EU non-residents, stating flatly that it is obligatory to name a tax representative in Portugal.
What resolves it is timing. AT’s leaflet sets out the actual trigger: if the person establishes a relação jurídica tributária — a tax relationship with Portugal — they become obliged, within 15 days, either to appoint a tax representative in Portugal or to sign up to one of two electronic notification channels: the notifications system in the Portal das Finanças, or the Caixa postal eletrónica (ViaCTT).
The leaflet also defines what counts as establishing that relationship: owning a vehicle registered in Portugal, owning Portuguese property, entering an employment contract for work in Portugal, or carrying on self-employed activity in Portugal.
Two things follow for a UAE resident specifically.
- The EU exemption does not help you. AT waives the representative-or-notifications requirement for residents of the EU, Norway, Iceland, Liechtenstein and Andorran citizens resident in Andorra. The UAE is a third country, so the 15-day obligation applies once triggered.
- Self-employment is the one case electronic notifications do not solve. AT is explicit that where a third-country resident’s tax relationship is self-employed activity in Portugal, opting in to an electronic channel does not remove the obligation to appoint a VAT representative — and that appointment must be made before starting the activity.
The consequence of getting this wrong is published. AT cites Article 124.º of the Regime Geral das Infrações Tributárias for a fine of EUR 75 to EUR 7,500 where appointment was required and not made, and adds a second consequence that is arguably worse: the non-resident becomes unable to exercise rights before the tax administration, including complaint, appeal and challenge. The gov.pt page on appointing a tax representative states the same fine range and the same 15-day deadline.
Who can act as one: any individual or company with tax residence or registered office in Portugal. Appointing one is free as an administrative act — what a representative charges for the service is a separate matter between you and them.
What it costs
Here we will disappoint anyone hoping for a clean answer, because Portugal has not published one for your situation.
The gov.pt NIF page says the request is free for people holding a Portuguese citizen card, and then: “Pode ter custos noutros casos” — it may carry costs in other cases, giving a request made through a tax representative as the example. A UAE resident with no citizen card is squarely in “other cases”, so we are not going to tell you the NIF is free, because no official page says that for a non-resident.
For the consular route, the Ministry of Foreign Affairs publishes only that consular act prices are set by the consular emoluments table approved by Portaria n.º 229/2021, without a figure for this act that we could read. Ask the post for the amount.
One official price we can give: the combined service that issues NIF, NISS and SNS health numbers in one visit is free — “É gratuito”. But read its conditions before getting excited: it runs at a limited number of Espaços Cidadão, requires a Portuguese address, and requires that you have applied for or already hold a residence permit. It is for people who have arrived, not for people still in Dubai.
How we usually handle this — our practice, not a rule
Marked as practice because no official page prescribes it.
We sequence it. Where a client’s timeline allows it, we let the tax number come with the residence visa under Article 58.º(6) rather than arranging one separately, and we only obtain one in advance when a specific step in front of the visa genuinely requires it. Where it is needed in advance, we treat the address document as the item most likely to cause a second trip, and we resolve the certified-translation question before anything is submitted rather than after. And we treat the appointment of a tax representative as a decision with consequences beyond the NIF itself, so we do not make it reflexively at registration when AT says it is not required then.
What happens next, once you have the number, is a Portuguese bank account and a social security number. We have separate guides on opening a Portuguese bank account from the UAE and on the NISS.
What we could not verify
Three things, named rather than smoothed over. There is no official euro figure for a NIF obtained through a consular post, or for one obtained by a non-resident generally — only the statement that costs may apply. There is no official confirmation that a UAE resident can complete the process entirely online with no representative of any kind; AT’s own wording routes the online request through a legal representative. And the two official sources genuinely conflict on whether a non-EU non-resident must name a tax representative at registration, which is why we have set out the 15-day trigger rather than choosing a side.
Frequently asked questions
Can I get a Portuguese NIF without going to Portugal?
Yes in principle. The Ministry of Foreign Affairs lists NIF allocation as a consular service available at any consular post, and AT also accepts requests through the Portal das Finanças e-balcão made by a legal representative acting for you. The Portuguese Embassy in Abu Dhabi does not list NIF among its own consular services, so confirm with the post that covers you before relying on that route.
Do I need a tax representative to get a NIF?
AT and the Ministry of Foreign Affairs both say it is not compulsory at the moment of registration, while the gov.pt service page says it is for non-EU non-residents. What is clear is the trigger: once you establish a tax relationship with Portugal — property, a registered vehicle, an employment contract or self-employment there — you have 15 days to appoint a representative or to opt in to electronic notifications through the Portal das Finanças or ViaCTT. That alternative is not available to residents of third countries carrying on self-employed activity, who must appoint a VAT representative before starting.
What documents do I need for a Portuguese NIF?
A valid passport, and a document showing your address abroad if the address is not on the passport — which for a UAE resident it will not be. Documents must be originals or certified copies, and foreign-language documents must be submitted as certified translations. If someone applies on your behalf, add a power of attorney.
Is a NIF free?
Not necessarily, and no official page says it is free for a non-resident. The gov.pt page says the request is free for holders of a Portuguese citizen card and that it may carry costs in other cases, naming a request through a tax representative as an example. Consular act prices come from the official consular emoluments table.
Does my NIF change when I become a resident?
No. AT states the nine-digit number stays the same whether you are registered as resident or non-resident. What changes is your registered status and address with the tax authority, not the number.
If I am applying for a D7 or remote-work visa, do I still need to arrange a NIF separately?
Often not. Article 58.º(6) of Lei n.º 23/2007 provides that a residence visa is issued with a pre-authorisation carrying provisionally allocated tax, social security and health service numbers. You would arrange one in advance only where something before the visa requires it — typically a bank account, a lease or a property purchase.
Is the NIF the same as the NISS?
No. The NIF is the tax number, issued by the tax authority. The NISS is the social security number, issued by the Instituto da Segurança Social, and it is requested separately and for different reasons.