KoSIT has confirmed strong progress on XRechnung 4.0, which will align with the upcoming EN 16931-1:2026 standard and enable a single, EU-compliant format for both B2G and future B2B e-invoicing. The update introduces major technical and regulatory changes (including ViDA alignment), is not backward compatible, and requires businesses to upgrade systems and prepare early for mandatory e-invoicing... Read more

The purpose of this document is to describe how electronic invoices are handled in Germany. This document explains e-invoices, what they are, and how they are used, with special attention being paid to their legal treatment in Germany. Read more

A new guidance issued by Germany’s Federal Ministry of Finance, effective 1 January 2025, replaces the 2013 instructions and clarifies taxpayers’ rights and cooperation duties during external tax audits, with the document now required to be attached to audit orders. Taxpayers must support audits by providing records, data access, workspace, and knowledgeable staff, while auditors must identify themselves, respect taxpayer rights, and conduct audits fairly, including in the taxpayer’s favor. Read more

Germany is fundamentally transforming invoicing by introducing mandatory B2B e-invoicing, requiring companies to receive e-invoices from 2025 and to issue structured, EN 16931-compliant e-invoices from 2027 under the amended German VAT Act. As a result, 2026 is the key preparation year for businesses to upgrade systems, align processes with partners, and ensure compliance while laying the groundwo... Read more

Deutsche Fiskal announced a February 2026 rollout of FCC version 4.4.0, mandatory system upgrades, and related technical changes, including new TSE selection options (initially test-only) and required authentication adjustments for customers upgrading from older FCC versions. All FCC DC installations will be upgraded during February 2026, February invoices will be temporarily issued from a fiskaly email address, and customers must ensure payments are made to the updated Commerzbank account. Read more

S4F backoffice patch is intended for users who have already installed S4F backoffice and are intended to update existing installations to latest version. To do so apply only patches that are marked with version number that is newer than your currently installed instance of backoffice. Please make sure to install all available patches sequentially (without skipping). This package contains instruction, release notes, changelog and software packages required for deployment of this software component. Read more