Portugal's personal tax identification number — required for virtually all financial and legal transactions in Portugal, including property purchase.
The NIF — Número de Identificação Fiscal — is Portugal's personal tax number, issued by the Autoridade Tributária e Aduaneira (AT — Portuguese Tax Authority). It is a nine-digit number assigned to each individual and used across all tax and administrative interactions with Portuguese authorities. The NIF is to Portugal what the NIE is to Spain and the Codice Fiscale is to Italy: an essential administrative key for any expat dealing with the Portuguese system.
For expats, the NIF is required before you can open a Portuguese bank account, sign any property purchase contract (both the CPCV preliminary contract and the final escritura), start employment in Portugal, register a company, apply for the NHR (now IFICI) tax regime, or file a Portuguese tax return. It is also required to receive healthcare through the SNS (national health service) and to access many public services.
EU/EEA nationals can apply for a NIF at any Finanças (tax office) in Portugal or at many Lojas do Cidadão (citizen shops), generally with just their passport or identity card. No Portuguese address is needed at the time of first application, though you will need to appoint a Portuguese fiscal representative if you are non-resident and provide a foreign address. Non-EU nationals apply in the same way.
Non-resident property buyers frequently need to appoint a representante fiscal (fiscal representative) — a person with a Portuguese address who agrees to receive official tax correspondence on your behalf. Many Portuguese law firms and accounting firms offer fiscal representation services for a modest annual fee (typically €150–€300/year). Without a fiscal representative, the tax authority will not issue your NIF if you lack a Portuguese address.
The NIF does not expire. If you subsequently move from non-resident to resident status (e.g. after obtaining your AIMA-issued residence permit), you update your tax registration with AT to reflect your Portuguese address and resident status. This is important because NHR/IFICI tax regime benefits are only available to fiscal residents, and the clock for the ten-year benefit period starts from the year you register as a Portuguese fiscal resident.
The NIF (Número de Identificação Fiscal) is your tax number for dealings with the Tax Authority. The NISS (Número de Identificação de Segurança Social) is your Social Security number for contributions and benefits. You need both if you work in Portugal — the NIF comes first, the NISS is assigned when you register for employment.
You can apply through the Portuguese consulate in your home country or, in some cases, by sending a power of attorney to a Portuguese lawyer who applies on your behalf. The consul or lawyer acts as your fiscal representative for the initial application.
No. The NIF is your general tax identification number. NHR (Non-Habitual Residency, now replaced by the IFICI regime) is a special tax status applied to your NIF registration. You use your existing NIF to apply for NHR/IFICI status — you do not get a separate number.
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