Overview of NF-e web services and technical access points used by Brazilian tax authorities.

Official XSD schemas defining the structure and validation rules for NF-e/NFC-e events introduced in connection with Brazil’s RTC and the IBS/CBS framework.

The purpose of this document is to provide a structured overview of modern payment media, including their general meaning, main categories, and practical role in commercial transactions. It explains how payment media have evolved from traditional cash-based instruments to digital, mobile, and instant payment solutions used in today’s retail and e-Commerce environments

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

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

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