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Mexico

Mexico uses the Registro Federal de Contribuyentes (RFC) as its tax identification number. SAT assigns a 13-character RFC to individuals and a 12-character RFC to legal entities and certain legal arrangements registered in the Federal Taxpayer Registry.

MX MEX 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 Mexico TIN
Mexican RFC for Individuals
Current Individuals

Servicio de Administraci贸n Tributaria (Tax Administration Service)

The personal RFC is the 13-character tax identifier assigned by SAT to natural persons registered in the Federal Taxpayer Registry.

Details
Examples
GODE-561231-GR8
Where to find it

On the C茅dula de Identificaci贸n Fiscal, RFC registration acknowledgements, and the Constancia de Situaci贸n Fiscal.

Common names
RFC Registro Federal de Contribuyentes Clave en el RFC
Structure
1-4 Name segment Letters derived from the person's surnames and given name.
5-10 Date of birth Two-digit year, month, and day of birth.
11-13 Homoclave Three SAT-assigned characters used to distinguish taxpayers with otherwise similar RFCs.
Official source
oecd.org wwwmat.sat.gob.mx sat.gob.mx
Mexican RFC for Legal Entities and Legal Arrangements
Current Entities

Servicio de Administraci贸n Tributaria (Tax Administration Service)

The 12-character RFC is assigned by SAT to legal entities and certain legal arrangements registered in the Federal Taxpayer Registry.

Details
Examples
ABC-900115-1A2
Where to find it

On the C茅dula de Identificaci贸n Fiscal, RFC registration acknowledgements, and the Constancia de Situaci贸n Fiscal.

Common names
RFC Registro Federal de Contribuyentes Clave en el RFC
Structure
1-3 Denomination segment Letters derived from the entity's denomination or legal name.
4-9 Creation date Two-digit year, month, and day of incorporation or creation.
10-12 Homoclave Three SAT-assigned characters used to distinguish taxpayers with otherwise similar RFCs.
Official source
oecd.org wwwmat.sat.gob.mx