CUIT/CUIL Validator (Argentina)

Validate an Argentine CUIT/CUIL. If you need to generate a new one, try our CUIT/CUIL Generator.

international.disclaimer

This tool generates fictitious data intended exclusively for software testing and development purposes. The data does not correspond to real people or entities and must not be used for illegal, fraudulent purposes, or in ways that violate the privacy of others. Compliant with LGPD (Brazilian Data Protection Law).

See also:

NIF Validator
CNPJ Generator
Steuer-ID (Germany)
Unit Converter
DNI (Argentina)
HTML Encode/Decode
CPF Generator
QA Automation & Data Generation

CUIT Validation (Argentina)

What does the validator check?

Checks if the CUIT check digit is correct using weights 5, 4, 3, 2, 7, 6, 5, 4, 3, 2 and modulo 11. Also validates the prefix (20, 23, 24, 27, 30, 33, 34).

When is it considered invalid?

When it doesn't have 11 digits, the prefix is invalid, or the check digit doesn't match the expected calculation.

Use in development

Argentine fiscal systems need to validate CUIT. Use the validator to test if your implementation correctly detects valid and invalid CUITs.