GmbH Cash Book (Kassenbuch) in Germany 2026: Requirements and Digital Solutions
GmbHs that handle cash payments must keep a Kassenbuch. Learn when it’s mandatory, what GoBD requires, and which digital tools simplify it in 2026.
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GmbH Cash Book (Kassenbuch) in Germany 2026: GoBD Requirements
For a German GmbH, cash handling is a high‑risk area in tax audits. From 2026 onwards, the GoBD (Grundsätze zur ordnungsmäßigen Führung und Aufbewahrung von Büchern, Aufzeichnungen und Unterlagen in elektronischer Form sowie zum Datenzugriff) continue to define how a Kassenbuch must be kept so that it is accepted by the tax authorities.
This article explains the key GoBD requirements for a GmbH cash book in 2026, what is allowed, what is risky, and how to set up a compliant process.
1. When does a GmbH need a cash book?
A Kassenbuch is required whenever your GmbH has cash transactions (Bargeschäfte), for example:
- Cash sales (e.g. retail, gastronomy, services paid in cash)
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