CNPJ will have letters for the first time; understand how the change affects businesses

▤ Summary

Brazil will begin issuing CNPJ identifiers with letters and numbers starting in July 2026 to extend the capacity of the registration system. Existing CNPJs will remain valid, but new registrations will use the alphanumeric format. Companies that rely on fiscal, financial, or management software need to update databases, invoicing tools, and internal tax routines to handle the new identifier. The change also supports Brazil’s broader tax reform and the future rollout of CBS and IBS. If systems are not updated in time, businesses could face invoice errors, supplier issues, and tax compliance delays.

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