NT 2026.007: the 'IBS/CBS Exclusive Taxpayer' goes into production on November 3 — what tax and IT teams need to adjust now

A new issuer profile is born within NF-e

Amid the volume of technical notes that the Tax Reform has produced in 2026, one of them creates something structurally new in the NF-e data model: the figure of the Exclusive IBS/CBS Taxpayer. Technical Note 2026.007, published on August 5, 2026, updates the validation rules for NF-e and NFC-e and expands the registration queries carried out in the Federal Revenue Service's Centralized Taxpayer List – LCC-RFB and in the Centralized Taxpayer Registry – CCC. In practice, it solves a concrete problem brought about by the Reform: companies that become liable for IBS/CBS but were never ICMS taxpayers — and therefore never had a State Registration — may now need to issue NF-e model 55.

What actually changes

Among the main changes, the document now allows exclusive IBS and CBS taxpayers, who are not ICMS taxpayers, to issue NF-e without providing the State Registration. Technically, this translates into a change in the occurrence of the issuer's IE field, which becomes optional within the scenarios provided for in the NT. The identification of this new profile is not done through an explicit flag in the XML: the identification of the exclusive IBS/CBS taxpayer is now carried out through the absence of the issuer's State Registration information, complemented by verification, in the CCC, of the nonexistence of an active ICMS taxpayer state registration for the issuer's CNPJ/CPF.

Another point that deserves the attention of those who develop or operate fiscal systems: the authorization of the NF-e by exclusive IBS/CBS taxpayers will be carried out centrally, only by the Virtual Sefaz of Rio Grande do Sul (SVRS). This means that, regardless of the issuer's state of origin, the authorization flow will pass through a single national authorizing environment — a relevant change for those who currently route the webservice by state.

Restrictions and new validation rules

The NT does not allow unrestricted use of this profile. Rule I08-191 was created to restrict the CFOPs that can be used by exclusive IBS/CBS taxpayers, according to the IT 2023.002 table, and rules N01-10 and UB12-11 validate the filling of the tax groups (ICMS, IBS, CBS and IS) according to the issuer's condition. In addition, queries to the LCC-RFB and CCC were expanded, verifying the data of the issuer, recipient, and pickup and delivery locations, which increases registration control over the parties informed in the document.

It's worth noting that this flexibility applies only to NF-e model 55: for NFC-e (model 65), the absence of the issuer's IE will now be rejected by rule C17-42. In other words, the exclusive IBS/CBS taxpayer cannot use NFC-e as an alternative — they must operate within the specific rules of NF-e model 55.

Timeline: the window is already closing

The official timeline sets two key dates: NT 2026.007 will be made available for testing on 09/01/2026 and will go into production on 11/03/2026. This means that, as of today, there are just over five weeks left to complete testing before it actually takes effect. Technically, the NF-e Portal documentation has already made the necessary artifacts available: on August 31, 2026, the XML Schemas NF-e – Release Package No. 010f was published, containing the updates from NT 2025.002 v.1.50 and NT 2026.007 v.1.00, allowing software houses and IT teams to begin schema and validation adjustments already.

Who needs to pay attention

The impact is not restricted to a niche. The technical documentation itself already warns that the changes impact taxpayers, software houses and teams responsible for fiscal systems, who will need to adapt XML generation, registration validations, and the handling of the ICMS, IBS and CBS groups. This includes, for example, service providers who historically only issued NFS-e and never needed a State Registration, but who — within the new design of the IBS taxable event — may now have obligations that require NF-e model 55. The technical reference itself recommends caution: companies that do not have a State Registration and that may need to issue NF-e due to the Tax Reform should evaluate their processes in advance.

Checklist for the coming weeks

With production set for November 3, tax and IT teams have a short, concrete window of work:

• Map whether the company — or any affiliate — qualifies as an exclusive IBS/CBS taxpayer, that is, without an active ICMS State Registration.
• Confirm with the development team or the issuance provider whether schema package 010f has already been incorporated into the testing environment.
• Review the CFOP table used in operations in light of the new restriction under rule I08-191 and IT 2023.002.
• Test the routing of authorizations to SVRS in applicable scenarios, especially if the system currently routes by state.
• Simulate issuance without an IE in the testing environment to validate that the CCC query is returning the expected result.

This content is for informational purposes only and does not replace guidance from your company's accounting or tax consulting team for specific decisions regarding classification and issuance of fiscal documents.

The Edoo team is closely monitoring the Tax Reform timeline and is already assessing the impacts of NT 2026.007 on clients' fiscal workflows. If your company wants to understand how this applies to your scenario, talk to Edoo.