NIF Validator
Validate Portuguese Tax Identification Numbers (NIF) with real-time verification and entity type detection
Enter NIF Number
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About Portuguese NIF
The NIF (Número de Identificação Fiscal) is a Portuguese tax identification number used for all tax-related activities in Portugal.
Format:
- • 9 digits total
- • First digit(s) indicate entity type
- • Last digit is a check digit
- • Usually formatted as XXX XXX XXX
Entity Types:
- • 1, 2, 3: Portuguese individuals
- • 5, 9: Companies/Legal entities
- • 6: Public administration
- • 8: Individual entrepreneurs
Note: This validator checks the mathematical correctness of the NIF using the official Portuguese algorithm. It does not verify if the NIF is actually registered with the tax authorities.