CUIL

CUIL stands for Codigo Único de Identificación Laboral, a unique personal identification number used in Argentina to identify individuals within the labor and social security systems. It is issued by the National Administration of Social Security (ANSES) and is widely used by employers, social programs, and government agencies to manage payroll, social contributions, and access to benefits such as pensions and family allowances.

The CUIL is an 11-digit number that is typically presented with formatting such as XX-XXXXXXXX-X. The digits are used to uniquely identify a worker across various administrative processes, and the final digit serves as a check digit to validate the number. The CUIL is closely associated with the individual’s identity in official records and is commonly required when starting work, applying for social benefits, or interacting with government agencies.

CUIL is distinct from CUIT, another Argentine identification code used for tax purposes. While CUIL is primarily linked to employment and social security, CUIT (Clave Única de Identificación Tributaria) is used by the Federal Administration of Public Revenues (AFIP) for tax-related identify and obligations. In practice, individuals may interact with both numbers in different contexts, such as employment (CUIL) and tax administration (CUIT).

Privacy and misuse considerations apply to the CUIL, as it is a sensitive government identifier. It should be handled with care to prevent identity theft or improper use. The system is managed by official authorities, and the number is generally not disclosed publicly, being shared only in appropriate administrative or contractual contexts.