Finland VAT Number Format (FI12345678)

Arvonlisävero (ALV) number structure, regex & verified examples

Everything you need to know about Arvonlisävero (ALV) numbers in Finland — they follow the pattern FI + 8 digits (e.g. FI12345678), and can be verified against VIES. For the rates themselves, see Finland VAT rates and their history. Building a check into your app? See the Finland VAT API.

EU Member StateALVArvonlisäveroEUR

VAT Number Format

Structure

FI + 8 digits

Example format

FI12345678

Regex

^FI\d{8}$

VAT numbers are not case-sensitive — lowercase input is automatically normalised.

What we return for Finland

  • VIES validation (valid / not valid)
  • Company name & address
  • National registry ID
  • Founded date
  • Legal form
  • Industry
  • Works if VIES is down

See the full coverage table for all 27 EU member states + Northern Ireland →

Check a Finland VAT Number

Enter a ALV number starting with FI to verify it against the official VIES database.

Format: FI + 8 digits

Example:

Validate a Finland FI VAT number via API

Get Finland VAT rates via API — free, no key

No API key required
Request
curl "https://api.vatnode.dev/v1/rates/FI"
Response200 OK
{
  "countryCode": "FI",
  "countryName": "Finland",
  "vatName": "Arvonlisävero",
  "vatAbbr": "ALV",
  "standardRate": 25.5,
  "reducedRates": [
    13.5,
    10
  ],
  "superReducedRate": null,
  "parkingRate": null,
  "vatNumberFormat": "FI + 8 digits",
  "vatNumberPattern": "^FI\\d{8}$",
  "updatedAt": "2026-08-13"
}

View full rates API reference

Get Finland VAT rates via package — offline, no HTTP

eu-vat-rates-data
Request
# npm install eu-vat-rates-data
import { getRate } from 'eu-vat-rates-data'

const rate = getRate('FI')
console.log(rate.standard) // FI standard VAT rate
getRate() result200 OK
{
  "country": "Finland",
  "currency": "EUR",
  "eu_member": true,
  "vat_name": "Arvonlisävero",
  "vat_abbr": "ALV",
  "standard": 25.5,
  "reduced": [
    10,
    13.5
  ],
  "super_reduced": null,
  "parking": null,
  "format": "FI + 8 digits",
  "pattern": "^FI\\d{8}$"
}

View package on GitHub

Validate Finland FI VAT numbers

Requires API key
Request
curl "https://api.vatnode.dev/v1/vat/FI01120389" \
  -H "Authorization: Bearer YOUR_API_KEY"
Response200 OK
{
  "valid": true,
  "vatId": "FI01120389",
  "countryCode": "FI",
  "companyName": "Nokia Oyj",
  "companyAddress": null,
  "companyRegistrationDate": null,
  "companyForm": null,
  "industryDescription": null,
  "registryCode": null,
  "registryCodeName": null,
  "verifiedAt": "2026-04-25T12:00:00.000Z",
  "checkId": "019dc41e-d64d-7255-8ed7-cf5443103cd8",
  "countryName": "Finland",
  "countryVat": {
    "vatName": "Arvonlisävero",
    "vatAbbr": "ALV",
    "currency": "EUR",
    "standardRate": 25.5,
    "reducedRates": [
      13.5,
      10
    ],
    "superReducedRate": null,
    "parkingRate": null,
    "vatNumberFormat": "FI + 8 digits",
    "vatNumberPattern": "^FI\\d{8}$",
    "countryVatUpdatedAt": "2026-08-13"
  },
  "consultationNumber": null
}

View full API response schema

Frequently Asked Questions

What is the VAT number format in Finland?

VAT numbers in Finland follow the format: FI + 8 digits. Example: FI12345678. VAT numbers are not case-sensitive — lowercase input is automatically normalised.

What is the VAT number regex pattern in Finland?

Use this regular expression to validate VAT numbers in Finland ALV number format locally:

^FI\d{8}$

Test against the uppercase number. Format validation catches typos locally — always follow with a VIES check to confirm the number is active.

How do I validate a VAT number in Finland programmatically?

Send a GET request to https://api.vatnode.dev/v1/vat/{vatId} with your Authorization: Bearer header. The API checks the number against the official EU VIES database and returns a JSON response with a valid field, company name, address, and current ALV rates. Free plan available — 100 requests/month, no credit card required.

What does ALV stand for in Finland?

ALV stands for Arvonlisävero — the Finnish name for Value Added Tax (VAT). It appears on Finnish invoices and tax documents.

Validate Finland VAT numbers in your app

Use the vatnode API to automate ALV validation in your invoicing or checkout flow. Free plan available, no credit card required.