Finland VAT number format
8 digits
| VIES prefix | FI |
|---|---|
| Structure | 8 digits |
| Pattern | ^\d{8}$ |
| Company name via VIES | Yes |
| Address via VIES | Yes |
| Verified example | FI14636114 — Fortum Oyj |
Check digit
Mod-11-2 check exists (same family as the Y-tunnus); not enforced.
Vatline does not reject on this check. Only the structure is enforced, so a format-valid number can still turn out to be unregistered. Rejecting a genuine customer costs more than one extra lookup.
Check a number
Known-good value: FI14636114, which VIES returns as Fortum Oyj.