Invoicing & Accounting Guide
Practical articles on e-invoicing, taxes, and financial management for freelancers and companies.
GoBD-Compliant Invoice Archiving: 2026 Guide
How do you archive invoices in a GoBD-compliant way? Retention periods, the key principles - and why no official "GoBD certificate" exists.
How to Create an XRechnung: 2026 Guide (Including from PDF)
How do you create a valid XRechnung? A step-by-step guide — plus why a PDF invoice cannot simply be converted automatically.
Cancellation Invoices (Stornorechnung): How to Fix Errors
Made a mistake on an invoice? Learn how to legally issue a Stornorechnung in Germany under GoBD rules and cancel E-Invoices in 2026.
Invoice Numbering Rules in Germany (GoBD & UStG)
How to structure your invoice numbers correctly in Germany. Avoid GoBD violations, missing gaps, and ensure E-Invoicing compliance in 2026.
E-Invoicing Mandate 2025–2028 in Germany: B2B Checklist
The German e-invoicing mandate is active! Use our comprehensive checklist to ensure your business is fully compliant with B2B regulations in 2026.
ZUGFeRD 2.3 & Factur-X Explained: The B2B Guide
Learn how ZUGFeRD 2.3 and Factur-X work. We explain profiles, B2B benefits in Germany, and how to prepare for the 2025 e-invoicing mandate.
What is XRechnung? The Complete Guide for B2B
Learn everything about XRechnung: definitions, formats, the 2025 e-invoicing mandate in Germany, and how to create compliant B2B electronic invoices.