Banks, landlords, utility companies and employers often ask for a proof of your NIF, not only the number. In Portuguese this is the comprovativo de NIF. This guide explains where to get it and what to do if you cannot log in.
What is a NIF proof (comprovativo de NIF)?
It is a document issued by the Portuguese Tax Authority (Autoridade Tributária e Aduaneira, AT) that confirms your tax number and the name it belongs to. It is not a new number. It only proves the one you already have. If you still need the number itself, see what a NIF is.
Option 1: issue it on the Portal das Finanças
- Log in on the Portal das Finanças with your NIF and your password, or with Chave Móvel Digital.
- Search for the proof. Use the search bar on the portal and type “comprovativo de NIF”. Most guides describe an option to issue the NIF proof.
- Issue the PDF, save it and print it if the other party asks for a paper copy.
The wording and menu names change from time to time, so check the portal itself if what you see is different.
Option 2: ask at a tax office
If you cannot log in, a tax office (Serviço de Finanças) can help you in person. Bring a valid ID document. Opening times and whether you need an appointment vary, so check before you go.
What if you do not have a password?
Many foreigners get a NIF without ever receiving the password for the portal. In that case you cannot issue the proof yourself. First get your login working, or ask the person or service that applied for you to send you the proof.
What if you do not know your NIF number?
You cannot issue a proof of a number you cannot find. See how to find or recover your NIF first.
What if you do not have a NIF yet?
Then you need to apply first. You can do it without travelling to Portugal: see how to get a Portuguese NIF remotely, or the NIF online service.
Frequently asked questions
What is a comprovativo de NIF?
A document from the Portuguese Tax Authority that confirms your tax number and the name it belongs to. It is a proof, not a new number.
Where do I get my NIF proof?
On the Portal das Finanças after you log in with your NIF and password or Chave Móvel Digital, or at a tax office (Serviço de Finanças).
Can I get my NIF proof without a password?
Not online. You need your login first. A tax office can help in person, or you can ask whoever applied for you to send the proof.
Is the NIF proof the same as the NIF number?
No. The number is the nine digits. The proof is the document that shows the number and your name.
Does it cost anything?
The Tax Authority does not charge for issuing a NIF, and the proof issued on the portal is a free PDF according to the sources we reviewed. Check the portal for the current position.
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