Lithuania · LT
The Lithuanian VAT number
Nine digits, or twelve, and it is the second case that breaks the assumption that a Lithuanian VAT number is just the company code with a prefix.
Format: LT + 9 or 12 digits
Example: LT100005517118
Issued by: the State Tax Inspectorate (VMI), on VAT registration.
The format
A Lithuanian VAT number carries nine or twelve digits, and both are valid.
- LT + 9 digitsUsually matches the company code.
- LT + 12 digitsNatural persons and some legal persons.
The last digit is a check digit in both cases, computed modulus 11 with one set of weights and, when the remainder is 10, with a second set. In a twelve-digit code the second-to-last digit is always 1.
Company code and VAT code
The company code is nine digits, assigned by the Centre of Registers when the company is incorporated. It does not change for the life of the company.
The VAT code is issued separately, only on VAT registration. In many cases its nine digits match the company code, but not always: the company in the example below has a twelve-digit VAT code despite being a legal person.
That is why prefixing is not enough. The assumption "VAT code = LT + company code" works often and fails without warning. Linking the two reliably requires VMI’s register of VAT payers.
Finding the company
Centre of Registers
Registrų centras keeps the register of legal entities: name, code, legal form, seat, status. It is searched by name or company code, not by VAT code.
The VMI register of VAT payers
The tax inspectorate publishes VAT payer data, and that is what links a VAT code to a company code. Only joining both sources makes a lookup by VAT number possible; neither does it alone.
VIES
Lithuania discloses name and address. The address arrives as one comma-separated line in which the municipality is repeated (Vilniaus m., Vilniaus m. sav.), so splitting it automatically is unreliable.
Lithuania-specific pitfalls
- Nine digits is not the only shape. Twelve-digit codes are valid, including for legal persons.
- The company code is not always the VAT code. "
LT+ company code" works often and sometimes yields a number that does not exist. - The Centre of Registers is keyed by company code, so a VAT number gets you nowhere directly.
- In a twelve-digit code the second-to-last digit is always 1, a handy quick check.
- The address repeats the municipality, and often carries no postcode at all.
One API, one response shape
Vatlas turns a business tax number into a company record: legal name, national identifier, legal form, status and address. Lithuania: the same call and the same response as for every other country covered.
curl "https://api.vatlas.dev/v1/lookup/LT100005517118" \
-H "Authorization: Bearer $VATLAS_KEY"Response:
200 OK
{
"data": {
"vatNumber": "LT100005517118",
"countryCode": "LT",
"nationalNumber": "100005517118",
"nationalId": null,
"name": "UAB "Metis Baltic"",
"legalForm": null,
"status": "active",
"address": {
"line1": "N/A",
"line2": null,
"postalCode": null,
"city": null,
"country": "LT"
}
},
"meta": {
"source": "VIES",
"sourceDate": "2026-09-15",
"sourceSince": "2026-09-15",
"sourceUpdatedAt": null,
"proof": {
"type": "vies_consultation_number",
"value": "WAPIAAAAaCkPwVat"
}
}
}meta.source names the register that answered (SIRENE, ARES, VIES…) and meta.sourceDate the day it said so: the publication date of the file for a register we import, the day of the call for one we query live. The shape of the response never changes from one country to the next.
Try it on your own numbers. An email address is all it takes to create an account, with 100 requests a month and a working key in about a minute.
Frequently asked
The Lithuanian VAT number in short
How many digits does a Lithuanian VAT number have?
Nine or twelve after the LT prefix. Both are valid.
Are the company code and the VAT code the same?
Often, but not always. Some legal persons have a twelve-digit VAT code, so simply prefixing the company code with LT is not enough.
How do I find a company from a Lithuanian VAT number?
You need the VMI VAT payer data, which links the VAT code to the company code, and then the Centre of Registers for the company itself.
Why does VIES reject a trading company?
Because it is not registered for VAT. It has a company code but no VAT code.
What is a twelve-digit code?
A different code range, used for natural persons and some legal persons. Its second-to-last digit is always 1.
VAT numbers in other countries
Last updated 28 August 2026.