The Simples Nacional Management Committee has changed the deadline for companies under the simplified tax regime to begin mandatory use of the National NFS-e Issuer.

The requirement, which had been scheduled for September 1, 2026, has been postponed to November 1, 2026. The change provides additional time for taxpayers and municipalities to adapt to the operational and technological procedures required for issuing electronic service invoices under the national standard.

In practice, Simples Nacional companies that provide services must observe the new deadline and review their tax invoicing processes, particularly regarding the use of the national portal, proprietary systems, ERPs, and any API integrations (Application Programming Interface, used to enable communication between systems).

The measure does not eliminate the need for compliance. It simply extends the preparation period so that taxpayers can adjust their systems, records, and internal procedures before the requirement takes effect.

For companies, the key point is to monitor the implementation schedule, validate the operation of the issuer or integrated system being used, and avoid inconsistencies in the issuance of electronic service invoices.

Source: https://normasinternet2.receita.fazenda.gov.br/#/consulta/externa/152781