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

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

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

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

The purpose of this document is to provide a guide for understanding more about Kobak Portal. The KOBAK portal is an online platform provided by the Hungarian Tax Authority (NAV), designed to support retailers in managing their cash registers. It serves as a central point for registering devices, activating them, monitoring their status, and handling required administrative processes. Read more

This document provides a structured legal and operational overview of the upcoming fiscalization system in the Czech Republic, known as EET 2.0. It is intended to support retail compliance, system design, and audit readiness. It reflects the current understanding of the EET 2.0 system based on the draft legislation and available guidance. As the framework is still under development, additional requirements and changes are expected. Read more