Numero de Identificacao Fiscal is the Portuguese tax identification number issued by the Autoridade Tributaria e Aduaneira to individuals and entities for all tax, banking, and contracting purposes.
The Numero de Identificacao Fiscal (NIF), also called Numero de Contribuinte, is the Portuguese tax identification number issued by the Autoridade Tributaria e Aduaneira (AT). For individuals it is a nine-digit number; entities receive a separate Numero de Identificacao de Pessoa Coletiva (NIPC), also nine digits, which functions as both the tax ID and the company registry number.
Every person who interacts financially with Portugal needs an NIF: residents, non-residents buying property, founders forming a Lda or SA, freelancers issuing invoices, and even tourists who want a refund on a major purchase.
Non-residents from outside the EU/EEA must appoint a Portuguese tax representative when applying for an NIF unless they are EU residents - a 2022 reform liberalized this for some EU residents but kept it for third-country nationals.
Applications can be made in person at any Loja do Cidadao or AT branch, through a Portuguese lawyer or accountant under power of attorney, or via several online services that act as fiscal representative. The NIF appears on every Portuguese invoice, contract, lease, and bank document, and is the key to logging into the AT taxpayer portal at portaldasfinancas.gov.pt.
You need an NIF before you can open a Portuguese bank account, sign a Portuguese lease, buy property, register a Lda or SA, work as a freelancer, or even sign a Portuguese mobile phone contract. Founders relocating to Portugal under the IFICI ("NHR 2.0") regime apply for both their personal NIF (within the first weeks after arrival) and the corporate NIPC at company formation.
Many Portuguese golden-visa applicants and remote workers obtain an NIF months before relocating to start the bank-account process.
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