EU VAT ID Checker

Free live VIES validation, no registration needed

Live validation against the official EU VIES system

API Integration

Same validation via the firmafind.at API, enriched with Austrian company register data:

curl -X GET https://firmafind.at/api/vat/validate?country_code=AT&vat_number=U12345678 \
  -H "x-api-key: YOUR_API_KEY"

Example response:

{
  "success": true,
  "data": {
    "valid": true,
    "countryCode": "AT",
    "vatNumber": "U12345678",
    "companyName": "Beispiel GmbH",
    "address": "Am Belvedere 1",
    "postalCode": "1100",
    "city": "Wien",
    "firmenbuchMatch": {
      "firmenbuchNumber": "FN 123456 a",
      "legalForm": "GmbH",
      "status": "aktiv"
    }
  }
}

Free Tier: 200 requests/month. Pass your API key in the x-api-key header.

Automate this for all new CRM contacts?

The firmafind.at API gives you VAT validation + company register data in a single request.

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Frequently Asked Questions

Can I automate VAT ID checks for my CRM?▾
Yes, the firmafind.at API lets you automate VAT validation and enrich it with Austrian company register data automatically.
Where does the validation data come from?▾
Validation runs live against the official VIES system of the European Commission.
How does this differ from the firmafind.at API?▾
The firmafind.at API provides additional company register data (legal form, registration number, status) that VIES alone cannot offer.