Document Title: Directory of Tax and Civil Identifiers for the Top 10 Countries
Version: 1.0
Publication Date: 01.06.2026
Owner: Kazakhstan Network Information Center (KazNIC)

This document provides a list of formats for tax and civil identifiers for ten countries.
For each country, the following are specified: document type, regular expression syntax, and key requirements for data entry.
The information is for reference purposes and may be used when designing interfaces and input validation logic.

Code	Country	Type 	(ID Type)	Regular Expression	Note

KZ	Kazakhstan	BIN / IIN	^[0-9]{12}$	Strictly 12 digits 
RU	Russia		INN		^([0-9]{10}[0-9]{12})$	10 (legal) or 12 (individuals)
US	USA		EIN / SSN	^([0-9]{2}-[0-9]{7}|[0-9]{3}-[0-9]{2}-[0-9]{4})$ With hyphens
CN	China		USCC		^[0-9A-HJ-NP-RT-UW-Y]{18}$  	18 characters (excluding I, O, S, V, and Z)
DE	Germany		VAT (Ust-IdNr)	^DE[0-9]{9}$     Prefix DE + 9 digits
UZ	Uzbekistan	STIR / PINFL	^([0-9]{9}|[0-9]{14})$ 	9 digits (legal) or 14 digits (individuals)
GB	United Kingdom	CRN / VAT	^([0-9]{8}|GB[0-9]{9})$  8 digits or GB + 9 digits
TR	Turkey		VKN / TCKN	^([0-9]{10}|[0-9]{11})$        	10 digits (legal) or 11 digits (individuals)
UA	Ukraine		EDRPOU		^[0-9]{8}$ 	Strictly 8 digits for legal entities
AE	UAE		TRN		^100[0-9]{12}$	Starts with 100 followed by 12 digits