# What is CNPJ?

CNPJ is Brazil's national register of legal entities, and also the name of the tax ID it assigns. The Receita Federal publishes the register as open data each month. A CNPJ number has 14 digits: a base number for the company, an order number for the establishment, and check digits. It is the source of Brazilian records.

- CNPJ lookup: how to read a Brazilian company's tax ID: https://testigomexico.com/guides/cnpj-lookup-brazil
- Manufacturers in Brazil: the public record explained: https://testigomexico.com/guides/public-record-brazil
- Check a Brazilian supplier by CNPJ: CEIS, CNEP and more: https://testigomexico.com/check/brazil
- How to check a supplier in Latin America before you visit: https://testigomexico.com/guides/check-supplier-latin-america
- Glossary: the words behind every record: CNPJ (Cadastro Nacional da Pessoa Jurídica): https://testigomexico.com/glossary#cnpj


Cite as: Testigo, "What is CNPJ?", https://testigomexico.com/questions/what-is-cnpj, data file 2026-10-12.

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This is the Markdown version of https://testigomexico.com/questions/what-is-cnpj. Testigo: Testigo is supplier intelligence for people who source from Latin America: a search over manufacturers taken from the official public registry of each country. Each record shows its source, its date and what was not checked.