Overview
- Technical Note 1.33, signed by the Federal Revenue Service and Encat, suspends automatic rejection of invoices that omit IBS and CBS fields with no deadline set for reinstating validation.
- Despite the technical relief, Complementary Law 214/2025 makes highlighting IBS and CBS mandatory on electronic fiscal documents starting January 1, 2026, including NF-e, NFC-e, CT-e, NFS-e, NFCom, NF3e and BP-e.
- A joint notice from the IBS Management Committee and the Federal Revenue Service states 2026 will be a testing year with no CBS or IBS collection for taxpayers who meet accessory obligations, with noncompliance risking later charges and penalties.
- The revenue agency’s CBS pilot launched in 2025 with about 500 companies alongside the creation of a temporary IBS management committee to support systems testing and adaptation.
- The reform’s rollout foresees real CBS and selective tax collection beginning in 2027, IBS coexisting with ICMS and ISS from 2029 to 2032, full implementation in 2033 and a 50‑year transition for IBS revenue sharing among states and municipalities.