Brazil CNPJ Goes Alphanumeric: July 25 Outage

What Is Changing With the CNPJ?

Brazil's tax authority, the Receita Federal, is rolling out a major upgrade to the national business registration system: the CNPJ is moving from a purely numeric format to an alphanumeric one. This change affects every company registered in Brazil, as well as foreign investors, e-commerce sellers, and anyone who interacts with Brazilian business documents.

When Will Services Be Unavailable?

To implement the new system, the Receita Federal has scheduled a planned outage on July 25, 2026, from 7 a.m. to 7 p.m. (Brasília time). During this 12-hour window, all CNPJ-related queries and operations will be offline. This includes searches, registrations, updates, and any other transactions that depend on the CNPJ system.

Who Is Affected?

Any business owner, accountant, lawyer, or platform that relies on CNPJ lookups or registrations will be impacted. E-commerce sellers using marketplaces that validate CNPJ data should plan accordingly. Foreign investors and companies with Brazilian subsidiaries should ensure no critical filings are scheduled for that day.

What Should You Do Before July 25?

• Complete any pending CNPJ registrations or updates before July 25.
• Download or save any CNPJ certificates or documents you may need during the outage.
• Inform your accountant or legal team so they can reschedule any compliance tasks.
• If your business relies on automated CNPJ validation, notify your IT team to handle temporary unavailability.

What Comes After?

Once the migration is complete, the new alphanumeric CNPJ format will be in effect. Businesses should check with their software providers and accounting systems to ensure compatibility with the updated format ahead of the transition.