Check a Finnish VAT number
Validate a VAT number from Finland against the EU's VIES service, here or from your own code.
| Country prefix | FI |
|---|---|
| Local name | ALV-numero (arvonlisäverotunniste) |
| Format | FI followed by 8 digits |
| Shape | FI12345678 (an example of the shape, not a real registration) |
| Pattern | ^FI\d{8}$ |
Good to know about Finland
- It is the business ID (Y-tunnus) without the hyphen: 0112038-9 becomes FI01120389.
How the check works
The check asks VIES, the European Commission's VAT Information Exchange System, which in turn asks the member state's own tax database. Valid means the number is registered for intra-EU trade at the moment of the check. Where the member state shares them, the answer also carries the registered name and address. Spaces, dots and hyphens in the number are ignored.
From your code
curl -H "Authorization: Bearer $API_KEY" \
"https://agent-data-tools.revmesh2074.workers.dev/vat/validate?vat=FI12345678"One GET request, JSON back: valid, and the registered name and address when they are shared. A failed check is never charged. Keys, monthly plans and code in Python and Node.js: Company check API. Reference: tool page.
The Finnish company register
For more than the VAT status, look the company up in the register: Finnish company lookup, PRH trade register. Legal form, status, bankruptcy or liquidation, registration date, industry codes and address.
Questions
What does a Finnish VAT number look like?
FI followed by 8 digits, for example FI12345678 (an example of the shape, not a real registration). Locally it is called ALV-numero (arvonlisäverotunniste).
How do I check that a Finnish VAT number is valid?
Enter it on this page, or send it to the API. The check asks VIES, the European Commission's VAT Information Exchange System, which in turn asks the member state's own tax database. Valid means the number is registered for intra-EU trade at the moment of the check.
Why would a real number come back as not valid?
The business may not be registered for intra-EU trade, the registration may have ended, or the number may be written with the wrong prefix or a missing digit. A member state's database can also be unavailable for a short time; the check then fails instead of answering not valid.
What is special about Finland?
It is the business ID (Y-tunnus) without the hyphen: 0112038-9 becomes FI01120389.
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