Legal entities are required to be registered before the Commercial Registry of each State of Brazil. Such Commercial Registries are regulated by each State Government but are subject to Federal Legislation and rules issued by DREI – Departamento Nacional de Registro Empresarial e Integração. Such Federal Governmental Authority, under the branch of the Economy Ministry, is in charge of the norms and regulations for the integration of State Commercial Registries in Brazil.
Therefore, company information is public and accessible in each State via its State Commercial Registry.
https://www.gov.br/economia/pt-br/assuntos/drei
In São Paulo State, you may access information on companies, free of charge, online at:
https://www.jucesponline.sp.gov.br/
For Rio de Janeiro State, you may access information on companies online at:
Unfortunately, the websites and all its information are in Portuguese language only. Other States have their own websites, and the web address with links you may be found at: https://www.gov.br/economia/pt-br/assuntos/drei/juntas-comerciais