VAT registration number

Ireland VAT number format

Ireland VAT numbers (VAT) are written as IE + 7 digits + 1 or 2 letters (old format: digit, letter, 5 digits, letter), for example IE6433435F.

Country code: IE
Format: IE + 7 digits + 1 or 2 letters (old format: digit, letter, 5 digits, letter)
Example: IE6433435F
Local name: VAT registration number
Register: VIES (EU)
Standard VAT rate: 23%

Regular expression

^IE(\d{7}[A-W][A-IW]?|\d[A-Z+*]\d{5}[A-W])$

Checks the format only. Most countries also use a check digit; the validator checks both.

Check a Ireland VAT number

Include the country prefix. Checked against VIES (EU) and HMRC (UK) in real time.

How to validate a Ireland VAT number

Format: remove spaces, dots and dashes and compare with ^IE(\d{7}[A-W][A-IW]?|\d[A-Z+*]\d{5}[A-W])$.
Check digit: Ireland numbers contain a checksum that catches typos. The validator above checks it.
Registration: only the EU's VIES system can confirm that the number is currently registered for VAT. VIES forwards the question to the Ireland tax authority.

Check Ireland VAT numbers by API

curl "https://api.vatcheckapi.com/v2/check?vat_number=IE6433435F" -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 Ireland provides them.

Frequently asked questions

What does a Ireland VAT number look like?

IE + 7 digits + 1 or 2 letters (old format: digit, letter, 5 digits, letter), for example IE6433435F. The local name is VAT registration number (VAT).

How do I check a Ireland VAT number?

Enter it in the validator on this page. It checks the format and checksum 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.

Is the Ireland VAT number the same as the tax number?

Not always. In many countries the VAT number is the company's tax or registration number with the country prefix, in others it is a separate number. Only VAT-registered businesses have one, and only those numbers can be validated in VIES.

What is the VAT rate in Ireland?

The standard rate is 23%. See VAT rates in Ireland 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 with VIES and HMRC, 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=IE6433435F

{
  "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",
    "checked_at": "2023-01-11T12:30:28.000000Z"
  }
}

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