Validate Estonian VAT numbers (KMKR number (käibemaksukohustuslase registreerimisnumber)) against the EU VIES service. Paste one number or a whole list below: every entry is format-checked for Estonia (EE + 9 digits) before it is sent to VIES.
Estonia calls its VAT number the KMKR number, short for käibemaksukohustuslase registreerimisnumber (VAT payer registration number). It is issued by the Estonian Tax and Customs Board (Maksu- ja Tolliamet, EMTA).
Estonian companies also have an 8-digit registry code (registrikood) from the Commercial Register. The two are different numbers, and mixing them up is the most frequent reason an Estonian number fails the format check: the VAT number has 9 digits, the registry code has 8.
Registry codes come from the e-Business Register (e-äriregister), run by the Centre of Registers and Information Systems. VAT registration is a separate step with EMTA: a business must register once its taxable turnover passes the national threshold and can also apply voluntarily. Many small Estonian companies, including many set up by non-residents through Estonia's e-Residency programme, therefore have a registry code but no KMKR number at all.
In practice most Estonian VAT numbers begin with 10, and the last of the nine digits is a check digit. The format check on this page enforces EE plus 9 digits; whether a particular number is currently registered is answered by VIES.
When an Estonian customer gives you an 8-digit number, it is almost always the registry code. Before you invoice them without VAT under the intra-EU rules, ask for the KMKR number or confirm that the customer is not registered for VAT.
Estonian invoices usually label the VAT number KMKR nr and the registry code registrikood or reg. kood, and the two often appear side by side, so check which of the two you copied.
Paste your Estonian numbers into the validator above, one per line, each starting with EE. Spaces, dots and hyphens are removed automatically, and lower-case letters are converted to upper case.
justaxit first checks each entry against the Estonia format (EE + 9 digits). Numbers with the wrong shape are flagged immediately and are not sent to VIES. Well-formed numbers are then checked through VIES, which asks the Estonia tax administration whether the number is currently valid for intra-EU transactions.
Each result shows valid or invalid, plus the name and address when the member state shares them through VIES. If the national service is temporarily unavailable, the number is marked for retry rather than reported as invalid. Registered users can save lists and export results to CSV, Excel or PDF.
EE followed by 9 digits, for example EE123456789.
No. The registry code (registrikood) has 8 digits; the KMKR VAT number has 9 digits and is a separate number.
If it has 8 digits it is probably the registry code. Ask the supplier for the KMKR number, or look it up in the business register.
No. VAT registration is required only above the turnover threshold, so many small Estonian companies, including many e-Residency companies, have only the 8-digit registry code.