Lithuania VAT number format
9 or 12 digits
| VIES prefix | LT |
|---|---|
| Structure | 9 or 12 digits |
| Pattern | ^\d{9,12}$ |
| Company name via VIES | Yes |
| Address via VIES | Yes |
| Verified example | 119511515 — Klaipėdos universitetas |
Check digit
Mod-11 weighted checks exist for both legal (9) and temporary/branch (12) numbers; 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.
Watch out for
- Variable length.
Check a number
Known-good value: 119511515, which VIES returns as Klaipėdos universitetas.