Portugal (PT)

Validation of tax documents for Portugal.

Supported Documents

Document	Description	Format
NIF	Tax Identification Number	9 digits

The NIF is used for both individuals and legal entities.

Notes

• Validation includes the official modulo 11 checksum.
• The validator verifies valid NIF prefixes (1, 2, 3, 5, 6, 8, 9) to avoid false positives.
• Input may contain spaces or hyphens, which are automatically ignored.

Valid NIF Prefixes

Prefix	Entity Type
1, 2, 3	Individual persons
5	Legal entities (companies)
6	Public entities
8	Sole proprietors (empresário individual)
9	Irregular entities and others

Usage

Individual Validator (Recommended)

import { validateNIF } from "validator-tax-id";

// Personal NIF
validateNIF("123456789"); // ✅ true
validateNIF("232013969"); // ✅ true

// Company NIF
validateNIF("501442600"); // ✅ true (EDP)

// Public entity
validateNIF("600084779"); // ✅ true

// With formatting
validateNIF("123-456-789"); // ✅ true
validateNIF("123 456 789"); // ✅ true

Auto-detect (Alias)

import { validatePT } from "validator-tax-id";

validatePT("123456789"); // ✅ true (same as validateNIF)

Generic Function

import { validateIdentification } from "validator-tax-id";

validateIdentification("pt", "123456789"); // ✅ true
validateIdentification("pt", "501 964 843"); // ✅ true