Germany publishes updated BMF guidance on mandatory e‑invoicing

1. Updated BMF letter and its scope

On 15 October 2025, the German Federal Ministry of Finance (BMF) released an updated guidance letter that amends the VAT Implementation Decree (Umsatzsteuer‑Anwendungserlass, UStAE) and provides further clarifications on the mandatory e‑invoicing regime that has applied to domestic B2B transactions since 1 January 2025. This letter follows and finalises the draft issued on 25 June 2025, addressing feedback from tax authorities and industry.​

The official letter is available here (German): BMF – introduction of obligatory e‑invoicingopen_in_new.​

2. Error categories, readability and validation

The guidance refines how errors and readability are treated:

• Error distinctions
  • Format errors: occur when the invoice file does not meet technical requirements or prevents correct data extraction as required by the VAT Act.​
  • Business rule errors: arise when files violate business rules, such as missing mandatory fields or containing logical inconsistencies.​
• Readability
  • For EN 16931‑compliant structured e‑invoices, creating a separate human‑readable copy is optional.​
  • For hybrid formats (e.g. ZUGFeRD), if there is a discrepancy, the structured data takes precedence over the image/PDF component.​
• Validation guidance
  • Compliance with EN 16931 can be checked using appropriate validation tools, and the structured data must allow correct and complete extraction of all required invoice content.​
  • However, validation does not replace the recipient’s own review obligations; for example, applying the wrong tax rate will not necessarily produce a validation error and must still be checked by the recipient.​

3. Distribution methods and archiving standards

The letter reconfirms key points on how e‑invoices may be sent and stored:

• Distribution methods
  • Invoice issuers may choose any permitted transmission channel, such as EDI or email.​
  • Recipients must be able to receive e‑invoices and cannot insist on an “other invoice” format instead (such as paper or simple PDF) where the mandate requires an e‑invoice.​
• Archiving
  • E‑invoices must be archived in their original structured format to guarantee integrity and compliance with VAT law.​
  • Simply storing e‑invoices outside a GoBD‑compliant data processing system does not, in itself, breach VAT Act requirements for authenticity and integrity.​
  • For non‑VAT aspects of record‑keeping, the letter refers to the second GoBD amendment published on 14 July 2025: GoBD second amendmentopen_in_new.​

4. Clarifications on credit notes and decree updates

The BMF reiterates strict requirements for handling corrections:

• Credit notes and corrections
  • When correcting an e‑invoice, the credit note must itself be issued as an e‑invoice; missing or incorrect data cannot be corrected in another document format.​
  • Credit notes must be clearly identified as such, for example by using the correct invoice type code in the structured data.​
• Additional UStAE changes
  • Multiple sections of the VAT Implementation Decree (UStAE) are amended to update cross‑references, standardise terminology and improve clarity and consistency across the guidance.​

These updates give taxpayers and solution providers a more precise framework for distinguishing valid e‑invoices from other invoices, designing validation and archiving processes, and ensuring that corrections remain fully compliant with the mandatory domestic e‑invoicing rules.