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VAT Validation: Verify EU & Austrian UID numbers

1 min

You can now verify Austrian and EU VAT numbers (UID / Umsatzsteuer-Identifikationsnummer) directly in firmafind.

What it does

The validation tool queries official tax records and VIES databases:

  • Check if a UID number is active and valid.
  • Confirm that the company name and address match official tax records.
  • Get verification responses with timestamps for accounting audits.

Available in the dashboard and via API

Run manual checks in the dashboard or automate VAT verification during checkout and invoicing using the firmafind API.

To check a UID number via API:

curl -X GET "https://firmafind.at/api/vat/validate?country_code=AT&vat_number=U70497456" \
  -H "x-api-key: YOUR_API_KEY"

You can view complete query parameters and response schemas in the VAT Validation API Documentation. Questions? Email us at [email protected].