CPFCNPJ

CPFCNPJ refers to the Brazilian identifiers used for tax and business registration—CPF for individuals and CNPJ for companies. It is commonly used in software forms where a single field can accept either type, helping to identify customers, suppliers, and employees.

The Cadastro de Pessoas Físicas is issued by the Federal Revenue Service (Receita Federal). It consists of 11 digits formatted as XXX.XXX.XXX-XX. It is used for personal tax, payroll, banking, and credit checks. It includes two check digits calculated using a modulo 11 algorithm.

The Cadastro Nacional da Pessoa Jurídica is used for companies and other legal entities, also issued by Receita Federal. It consists of 14 digits formatted as XX.XXX.XXX/0001-XX. It identifies businesses for tax, invoicing, and corporate registrations; it includes two check digits calculated with a modulus 11 algorithm.

Both are sensitive identifiers and are regulated under Brazilian privacy laws, such as the LGPD. They are widely used in financial, administrative, and regulatory processes in Brazil, and should be handled with appropriate confidentiality and security measures.

In practice, CPFCNPJ commonly appears in systems as a single input that accepts either a CPF or a CNPJ. Validation relies on the length, formatting, and the check digits to distinguish or verify the correct type and authenticity of the number.