CUIT ValidatorVerify Argentine Tax Identification
Validate any Argentine CUIT in seconds. Checks format, taxpayer type, and check digit. 100% free.
CUIT Validator
Validates and verifies the format of Argentine CUITs.
Format: XX-XXXXXXXX-X
Format Examples:
What is the CUIT?
Unique Tax Identification Code
The CUIT is the code with which the AFIP identifies self-employed workers, businesses, and companies in Argentina.
CUIL (Código Único de Identificación Laboral)
Es un código que identifica a los trabajadores y empleados en el sistema de la seguridad social argentino. Es utilizado para todo lo relacionado con trabajo, jubilaciones y asignaciones familiares.
Structure of the CUIT:
- First 2 digits: Type (20/23/24/27 for individuals, 30/33/34 for companies)
- 8 central digits: DNI (individuals) or assigned number (companies)
- Last digit: Check digit
Common types by first digit:
- • 20-33-34: Companies and societies
- • 30-31: Individuals with economic activity
- • 20-23-24: Women (2nd digit 7)
- • 10-11-12: Men (2nd digit 9)
What does this tool validate?
- ✅ Correct format and length
- ✅ Taxpayer type consistency
- ✅ Check digit calculation
Importante:
Esta herramienta solo valida el formato y estructura matemática del CUIT/CUIL. No confirma si el número está activo, registrado en AFIP, ni pertenece a una persona específica. Para verificación oficial, consulta el sitio de AFIP (https://www.afip.gob.ar/).
Why use our Validator?
The most precise tool for validating CUITs
Official Algorithm
Use the official algorithm of AFIP (Module 11) to validate the check digit.
100% Safe
Local validation. No data is sent to our servers.
Type Detection
Identify if it is a man, woman, company, or entity based on the prefix.
What is the CUIT? / CUIL
Identify if it is a man, woman, company, or entity based on the prefix.
Unique Tax Identification Code
Legal Person
- Used for tax identification of companies and professionals
- Mandatory for electronic invoicing
- Required for banking and commercial procedures
CUIL (Unique Labor Identification Code)
Natural Person
- Used for labor and social security identification
- Mandatory for dependent employment
- Linked to social security and retirement
Do you need to validate other documents?
What is the CUIT?
Unique Tax Identification Code
The CUIT is the code with which the AFIP identifies self-employed workers, businesses, and companies in Argentina.
CUIL (Unique Labor Identification Code)
It is a code that identifies workers and employees in the Argentine social security system. It is used for everything related to work, retirement, and family allowances.
Structure of the CUIT:
- First 2 digits: Type (20/23/24/27 for individuals, 30/33/34 for companies)
- 8 central digits: DNI (individuals) or assigned number (companies)
- Last digit: Check digit
Common types by first digit:
- • 20-33-34: Companies and societies
- • 30-31: Individuals with economic activity
- • 20-23-24: Women (2nd digit 7)
- • 10-11-12: Men (2nd digit 9)
What does this tool validate?
- ✅ Correct format and length
- ✅ Taxpayer type consistency
- ✅ Check digit calculation
Important:
This tool only validates the format and mathematical structure of the CUIT/CUIL. It does not confirm if the number is active, registered with AFIP, nor does it belong to a specific person. For official verification, consult the AFIP website (https://www.afip.gob.ar/).