Each company is given a company number by the state authorities. This number has various names and patterns in each member state and country. Below are the accepted formats. Please note that the company number must be submitted without any space or dots.
| Country | Name | Typical pattern | Possible variations |
|---|---|---|---|
| Austria | Firmenbuchnummer | 2 letters + 6 numbers + 1 letter (LLXXXXXXL) | 1-6 numbers + 1 letter (XXXXXXL) |
| Belgium | Numéro d’entreprise Vestigingseenheidsnummer | 10 numbers (XXXXXXXXXX) | |
| Bulgaria | ЕИК (EIK)/ПИК (PIK) (UIC/PIC) | 9 numbers (XXXXXXXXX) | 13 numbers (XXXXXXXXXXXXX) |
| Canada | Business Number (BN) | 9 numbers (XXXXXXXXX) | |
| Croatia | Matični broj poslovnog subjekta (MBS) | 11 numbers (XXXXXXXXXXX) | 8 numbers (XXXXXXXX) |
| Cyprus | Αριθμός Μητρώου Εταιρίας Şirket kayıt numarası | 2 letters + 6 numbers (HEXXXXXX) | |
| Czech Republic | Identifikační číslo | 8 numbers (XXXXXXXX) | |
| Denmark | CVR-nummer | 8 numbers (XXXXXXXX) | |
| Estonia | Kood | 8 numbers (XXXXXXXX) | |
| Finland | Y-tunnus FO-nummer | 8 numbers (XXXXXXXX) | |
| France | Numéro SIREN ou SIRET | 9 numbers (XXXXXXXXX) ou 14 numbers (XXXXXXXXXXXXXX) | |
| Germany | Nummer der Firma Registernummer | 2-3 letters + 6 numbers (LLXXXXXX) | 2-3 letters + 1-6 numbers (LLLXXXX) or 2-3 letters + 1-6 numbers + 1 letter (LLLXXXXXXL) or 2-3 letters + 1-6 numbers + 1-2 letter (LLLXXXXXXLL) |
| Greece | τον Αριθμό Γενικού Εμπορικού Μητρώου τον Αριθμό Φορολογικού Μητρώου (Α.Φ.Μ.) | 12 numbers (XXXXXXXXXXXX) | 9 numbers (XXXXXXXXX) |
| Hungary | Cégjegyzékszáma | 2 letters + 10 numbers (LLXX-XX-XXXXXX) | XX-XX-XXXXXX |
| Ireland | Company Number | 6 numbers (XXXXXX) | 5 numbers (XXXXX) |
| Island | TIN | 10 numbers (XXXXXXXXXX) | |
| Italy | Codice fiscale | 11 numbers (XXXXXXXXXXX) | 2 letters + 7 numbers (LLXXXXXXX) |
| Latvia | Reģistrācijas numurs | 11 numbers (XXXXXXXXXXX) | |
| Liechtenstein | UID | 3 letters + 9 numbers (LLLXXX XXX XXX) | |
| Lithuania | Juridinio asmens kodas | 9 numbers (XXXXXXXXX) | |
| Luxembourg | Numéro d’immatriculation | 1 letter + 6 numbers (LXXXXXX) | 1 letter (from A to J) + 3-6 numbers |
| Malta | Registration Number | 1 letter + 5 numbers (LXXXXX) | |
| Netherlands | KvK-nummer | 8 numbers (XXXXXXXX) | |
| Norway | TIN | 11 numbers (XXXXXXXXXXX) | 9 numbers (XXXXXXXXX) |
| Poland | Numer w Krajowym Rejestrze Sądowym (numer KRS) | 8 numbers (XXXXXXXX) | 6 numbers (XXXXXX) / 9 numbers (XXXXXXXXX) / 10 numbers (XXXXXXXXXX) |
| Portugal | Número de Identificação Pessoa Coletiva (NIPC) | 9 numbers (XXXXXXXXX) | 3-6 numbers (XXXXXX) |
| Romania | Număr de ordine în Registrul Comerţului | 8 numbers (XXX XX XXX) | |
| Slovakia | Identifikačného čísla Identification number | 8 numbers (XXX XX XXX) | |
| Slovenia | Matična številka | 10 numbers (XXXXXXXXXX) | 7 – 10 numbers (XXXXXXXXXX) |
| Spain | Número de identificación fiscal (NIF) | 1 letter + 8 numbers (LXXXXXXXX) | 1 letter + 7 numbers + 1 letter (LXXXXXXXL) |
| Sweden | Registreringsnummer | 10 numbers (XXXXXXXXXX) | |
| Switzerland | UID | 9 numbers (XXXXXXXXX) | CHE + 9 numbers |
| United Kingdom | Company Number / Registration Number | 8 numbers (XXXXXXX) | OC + 6 numbers (OCXXXXXX) or SC + 6 numbers (SCXXXXXX) or NI + 6 numbers (NIXXXXXX) or R + 7 numbers (RXXXXXXX) or IP + 5 numbers + R (IPXXXXXR) |
| United States | Company Number / Employee Identification Number (EIN) | 9 numbers: (xx-xxxxxxx) |