Número de Identificação Fiscal

Portugal VAT number format

Portugal VAT numbers (NIF) are written as PT + 9 digits, for example PT501964843.

Country code: PT
Format: PT + 9 digits
Example: PT501964843
Local name: Número de Identificação Fiscal
Register: VIES (EU)
Standard VAT rate: 23%

Regular expression

^PT\d{9}$

Checks the format only. The validator below also checks the check digit.

Check a Portugal VAT number

Include the country prefix. EU numbers are checked against VIES in real time, UK numbers with a separate live check.

How Portugal VAT numbers are built

PT followed by 9 digits, the NIF. The first digit shows the type of taxpayer, for example 5 for companies.

Check digit

The 9th digit is a weighted modulo-11 check digit (weights 9 to 2). The validator checks it.

Common mistakes

Everyone in Portugal has a NIF; only VAT-registered businesses are valid in VIES.

Is the number registered?

A valid format and check digit only mean the number could exist. Whether it is currently registered for VAT is known to the Tax and Customs Authority (Autoridade Tributária e Aduaneira), and VIES asks that register for you. Where Portugal shares them, VIES also returns the registered name and address.

Check a Portugal number with the validator above, in the VAT number checker, or up to 50 at once with the bulk VAT validator.

Check Portugal VAT numbers by API

curl "https://api.vatcheckapi.com/v2/check?vat_number=PT501964843" -H "apikey: YOUR-API-KEY"

The response says whether the format and checksum are valid and whether the number is registered, with name and address where Portugal provides them.

Frequently asked questions

What does a Portugal VAT number look like?

PT followed by 9 digits, the NIF. The first digit shows the type of taxpayer, for example 5 for companies. The local name is Número de Identificação Fiscal (NIF), for example PT501964843.

How do I check a Portugal VAT number?

Enter it in the validator on this page. It checks the format and check digit and asks the EU's VIES system whether the number is registered, with company name and address where available. The vatcheckapi API does the same from your code.

Do Portugal VAT numbers have a check digit?

The 9th digit is a weighted modulo-11 check digit (weights 9 to 2). The validator checks it.

What is the most common mistake with Portugal VAT numbers?

Everyone in Portugal has a NIF; only VAT-registered businesses are valid in VIES.

What is the VAT rate in Portugal?

The standard rate is 23%. See VAT rates in Portugal for reduced rates and a calculator.

VAT validation API

Validate VAT numbers in your app

vatcheckapi checks the format and checksum of EU and UK VAT numbers and confirms the registration live (VIES for EU numbers), with company name and address where the country provides them.

/v2/check documentation VAT number API All documentation

150 free validations every month. No credit card required.

GET https://api.vatcheckapi.com/v2/check?vat_number=LU26375245

{
  "country_code": "LU",
  "vat_number": "26375245",
  "format_valid": true,
  "checksum_valid": true,
  "registration_info": {
    "is_registered": true,
    "name": "AMAZON EUROPE CORE S.A R.L.",
    "address": "38, AVENUE JOHN F. KENNEDY\nL-1855  LUXEMBOURG",
    "address_parts": null,
    "checked_at": "2026-10-16T09:12:44.000000Z"
  },
  "registration_info_history": []
}

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