Brazil published Technical Note 2026.004 v1.00 to prepare NF-e and NFC-e systems for the new alphanumeric CNPJ format. The update is mainly technical but has broad system impact, requiring companies and providers to update databases, validations, APIs, XML schemas, access keys, and SEFAZ integrations before production starts on July 1, 2026.
Brazil Updates e-Invoice and e-Receipt Systems for Alphanumeric CNPJ.
Public
Brazil
Author: Ivana Picajkić
Category:
Fiscal subject related
Views:
62
Content accuracy validation date:
20.05.2026
Content accuracy validation time:
08:13h
Brazil has published Technical Note 2026.004 version 1.00, introducing technical changes to prepare the e-Invoice and e-Receipt systems for the new alphanumeric CNPJ format.
The change follows Normative Instruction RFB No. 2,229/2024, which allows the CNPJ to include letters because the current numeric format is gradually running out of available numbers.
The update affects XML schemas, web services, access keys and identification fields used for issuers, recipients, carriers, marketplaces, payment intermediaries and technical managers. Systems that currently treat the CNPJ as only numeric will need to be updated.
The main impact is technical. Companies, ERP providers, fiscal middleware providers and developers must review databases, validations, APIs, XML generation, access key storage and integrations with SEFAZ.
The official schedule is:
- Testing environment: June 1, 2026
- Production environment: July 1, 2026
Brazil is preparing its e-Invoice and e-Receipt infrastructure for alphanumeric CNPJ numbers. The legal concept is simple, but the technical impact is broad because many systems currently assume that CNPJ values are only numeric.
Other news from Brazil
Brazil Updates Rules for e-Invoices and e-Receipts under Tax Reform
Public
Brazil
Author: Ivana Picajkić
Brazil
Author: Ivana Picajkić
Brazil published NT 2025.002-RTC version 1.36, updating NF-e and NFC-e layouts and validation rules to support the new IBS and CBS tax reform framework. The changes affect returns, partial delivery refusals, credit/debit notes, and MEI validations, with testing from July 1, 2026 and production from August 3, 2026 Brazil has published version 1.36 of NT 2025.002-RTC, introducing new layout changes... Read more
New document was uploaded: Provider of Electronic Tax Document Signature and Authorization PAA (PT)
Brazil
Author: ....
This document explains Brazil’s Technical Note 2026.001 v1.00 on the Provider of Electronic Tax Document Signature and Authorization (PAA). It defines how an authorized provider can digitally sign and submit electronic tax documents, such as NF-e and NFC-e, on behalf of taxpayers. The document describes the technical model, including RSA keys, digital signatures, XML structure, taxpayer accreditation, and document series rules. Read more
Subscribe to get access to the latest news, documents, webinars and educations.
Already subscriber? Login
New document was uploaded: Provider of Electronic Tax Document Signature and Authorization PAA (EN)
Brazil
Author: .....
This document explains Brazil’s Technical Note 2026.001 v1.00 on the Provider of Electronic Tax Document Signature and Authorization (PAA). It defines how an authorized provider can digitally sign and submit electronic tax documents, such as NF-e and NFC-e, on behalf of taxpayers. The document describes the technical model, including RSA keys, digital signatures, XML structure, taxpayer accreditation, and document series rules. Read more
Subscribe to get access to the latest news, documents, webinars and educations.
Already subscriber? Login
New document was uploaded: Tax Reform of Consumer Goods – NF-e / NFC-e Adjustments (PT)
Brazil
Author: .....
This document explains Brazil’s Technical Note 2025.002-RTC v1.36, which updates the NF-e and NFC-e layouts to support Brazil’s new tax reform. It introduces fields and validation rules for the new taxes: IBS, CBS, and Selective Tax (IS). The document describes changes to XML schemas, invoice item fields, tax classification codes, authorization protocols, and new fiscal events. Read more
Subscribe to get access to the latest news, documents, webinars and educations.
Already subscriber? Login
New document was uploaded: Tax Reform of Consumer Goods – NF-e / NFC-e Adjustments (EN)
Brazil
Author: ....
This document explains Brazil’s Technical Note 2025.002-RTC v1.36, which updates the NF-e and NFC-e layouts to support Brazil’s new tax reform. It introduces fields and validation rules for the new taxes: IBS, CBS, and Selective Tax (IS). The document describes changes to XML schemas, invoice item fields, tax classification codes, authorization protocols, and new fiscal events. Read more
Subscribe to get access to the latest news, documents, webinars and educations.
Already subscriber? Login
New document was uploaded: Technical Note - Alphanumeric CNPJ Updates (PT)
Brazil
Author: ....
This document explains Brazil’s Technical Note 2026.004 v1.00, which updates the NF-e and NFC-e systems for the new alphanumeric CNPJ format. It focuses on technical changes to XML schemas, CNPJ fields, access keys, and related web services. Read more
Subscribe to get access to the latest news, documents, webinars and educations.
Already subscriber? Login