Country guide

Türkiye

Türkiye uses an 11-digit personal identity number as the TIN for Turkish citizens and for foreign residents who have a foreign or blue-card identity number, and a 10-digit Vergi Kimlik Numarası for legal entities, unincorporated entities, foreign legal entities, and foreign nationals who do not have a foreign identity number.

TR TUR 2 TIN types Last reviewed 2026-06-05

TIN types

2 published formats. Open a type to see examples, structure details, and official sources.

Validate Türkiye TIN

Turkish Personal Identity Number

Current Individuals

Nüfus ve Vatandaşlık İşleri Genel Müdürlüğü (General Directorate of Population and Citizenship Affairs)

The 11-digit identity number is used as the personal TIN for Turkish citizens and may also be used by foreign nationals who have a foreign or blue-card identity number.

Details

Examples

10000000146

Where to find it

On Turkish identity cards, foreign or blue-card identity records, passports for citizens, and tax declarations, returns, or tax-administration notifications where the person is identified.

Common names

T.C. Kimlik No TCKN Türkiye Cumhuriyeti Kimlik Numarası Yabancı Kimlik No YKN Mavi Kartlı Kimlik No

Structure

1-9 Core identifier Unique personal identity sequence assigned by the population-registration system.

10-11 Verifier digits Two control digits derived from the preceding digits.

Official source

oecd.org nvi.gov.tr tckimlik.nvi.gov.tr goc.gov.tr intvrg.gib.gov.tr

Turkish Tax Identification Number (Vergi Kimlik Numarası)

Current Individuals Entities

Gelir İdaresi Başkanlığı (Turkish Revenue Administration)

The 10-digit VKN is the tax number issued for legal entities, unincorporated entities, foreign legal entities, and foreign nationals who do not have a foreign identity number.

Details

Examples

0540033975

Where to find it

On TIN cards, taxpayer financial statements, declarations, tax returns, and tax-administration notifications; foreign applicants can obtain a potential tax number online through the Digital Tax Office.

Common names

Vergi Kimlik Numarası VKN Tax Identification Number Potential Tax Identification Number

Structure

1-3 Alpha group code Code derived from the holder's name or title.

4-9 Sequence number Sequence number within the alpha group code.

10 Control number Check digit derived from the first 9 digits.

Official source

oecd.org turkiye.gov.tr dijital.gib.gov.tr istanbul.goc.gov.tr intvrg.gib.gov.tr