Joint Technical Act RFB/CGIBS No. 8/2026: the new unified technical basis for NF-e, NFC-e, CT-e, NFCom, BP-e, NF3e, NFAg, and NFGas under IBS/CBS

Federal Revenue Service and CGIBS close the technical documentation package for eight DF-e

On the same day that the mandatory highlighting of IBS and CBS reached NFS-e and NFCom for most services, the Federal Revenue Service and the IBS Management Committee took another structural step in the consumption tax reform. The Federal Revenue Service and the CGIBS approved technical documentation for eight types of electronic tax documents related to IBS and CBS, with the act signed on September 29 and published in a special edition of the Official Gazette (DOU) on October 1, 2026.

The measure is formalized in Joint Technical Act RFB/Sufis/CGIBS/Executive Board No. 8, signed on September 29, 2026 and published in a special edition of the Official Gazette of the Union on October 1. It's worth noting the composition of the act: in addition to the Federal Revenue Service (RFB) and the IBS Management Committee (CGIBS), it bears the signature of Sufis — the RFB's Subsecretariat of Tax Inspection — and of an Executive Board, which reinforces the technical-operational nature of the rule, aimed directly at those who develop and maintain issuer systems.

Which tax documents are affected

The scope of Act No. 8 is broad and covers practically the entire Brazilian electronic tax document ecosystem. The act covers the Electronic Invoice (NF-e), the Electronic Consumer Invoice (NFC-e), the Electronic Transport Document (CT-e), the Electronic Communication Services Invoice (NFCom), the Electronic Passenger Ticket (BP-e), the Electronic Electric Energy Invoice (NF3e), the Electronic Water and Sanitation Invoice (NFAg), and the Electronic Gas Invoice (NFGas).

For those who work with NF-e and NFC-e on a daily basis, the most relevant detail lies in the specifications already incorporated into this package: for NF-e and NFC-e, the documentation includes specifications on operations involving the printing of the Simplified DANFE Type 2, issuance by an IBS/CBS-exclusive taxpayer, net product value, and the Tax Reform DANFE, in addition to tax classification tables. In other words, the act does not create isolated new rules, but rather consolidates into a single regulatory instrument technical pieces that had been tested separately — such as the IBS/CBS Exclusive Taxpayer profile and the Simplified DANFE Type 2 itself.

Where to find it and when it takes effect

For IT and tax teams that need to validate layouts and XSDs, the access path is already defined: the documentation will be made available on the DFe portals of SVRS and the Electronic Invoice. As for its effective date, there is no additional transition period: the act determines that it takes effect and produces legal effects on the date of its publication in the Official Gazette of the Union and on the CGIBS website, meaning since October 1, 2026.

Why this matters now

Act No. 8 arrives at a time of accumulating obligations: the same date of October 1 marked the beginning of the IBS/CBS requirement for most services subject to ISS and for NFCom, in addition to the opening of the table events for the Declaration of Specific Regimes (DeRE). Having the technical documentation for eight different DF-e consolidated into a single act reduces the risk of development teams working with mismatched versions of technical notes — a recurring problem since the reform began requiring simultaneous updates to multiple tax documents throughout 2026.

What tax, accounting, and IT teams need to check this week

• Check whether the issuer system already includes the tax classification tables referenced in the new act, especially for NF-e and NFC-e;
• Validate the behavior of the Simplified DANFE Type 2 and the Tax Reform DANFE in a staging environment before any real issuance;
• Review the registration of customers and suppliers that qualify as IBS/CBS Exclusive Taxpayers, a profile without a State Registration that has been under testing since September;
• Map out which of the eight tax documents (NF-e, NFC-e, CT-e, NFCom, BP-e, NF3e, NFAg, NFGas) your company actually issues, in order to prioritize testing;
• Monitor the SVRS and NF-e DFe portals to download the updated technical documentation.

This content is for informational purposes only and does not replace guidance from your accounting department or a specialized tax consultancy, which should assess the specific impact of these changes on your company's operations.

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