Arvonlisäverotunniste (ALV-numero)

Finland VAT number format

Finland VAT numbers (ALV) are written as FI + 8 digits, for example FI20774740.

Country code: FI
Format: FI + 8 digits
Example: FI20774740
Local name: Arvonlisäverotunniste (ALV-numero)
Register: VIES (EU)
Standard VAT rate: 25.5%

Regular expression

^FI\d{8}$

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

Check a Finland VAT number

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

How Finland VAT numbers are built

FI followed by 8 digits: the business ID (Y-tunnus) without the hyphen, so 2077474-0 becomes FI20774740.

Check digit

The 8th digit is a weighted modulo-11 check digit (weights 7, 9, 10, 5, 8, 4, 2). The validator checks it.

Common mistakes

A business ID alone is not enough: the business must be in the VAT register to be 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 Finnish Tax Administration (Verohallinto), and VIES asks that register for you. Where Finland shares them, VIES also returns the registered name and address.

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

Check Finland VAT numbers by API

curl "https://api.vatcheckapi.com/v2/check?vat_number=FI20774740" -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 Finland provides them.

Frequently asked questions

What does a Finland VAT number look like?

FI followed by 8 digits: the business ID (Y-tunnus) without the hyphen, so 2077474-0 becomes FI20774740. The local name is Arvonlisäverotunniste (ALV-numero) (ALV), for example FI20774740.

How do I check a Finland 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 Finland VAT numbers have a check digit?

The 8th digit is a weighted modulo-11 check digit (weights 7, 9, 10, 5, 8, 4, 2). The validator checks it.

What is the most common mistake with Finland VAT numbers?

A business ID alone is not enough: the business must be in the VAT register to be valid in VIES.

What is the VAT rate in Finland?

The standard rate is 25.5%. See VAT rates in Finland 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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