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E-Invoicing

E-invoicing from 2025 — compliant with ZUGFeRD and XRechnung.

The German Growth Opportunities Act obliges every company based in Germany to receive structured electronic invoices from 1 January 2025. We bring your ERP and EDI processes into shape on time — pragmatically, integrated and operationally sound.

Statutory deadlines

What applies when.

The introduction dates from the Growth Opportunities Act at a glance:

from 01 Jan 2025

Receiving obligation

Every German-based company must be able to receive and process electronic invoices in a structured format.

from 01 Jan 2027

Sending obligation (revenue > €800k)

Companies with prior-year revenue above €800,000 must send e-invoices in B2B.

from 01 Jan 2028

Sending obligation (all)

Full B2B sending obligation for all German-based companies. Paper and PDF invoices are no longer permitted.

Formats

Which format fits you?

ZUGFeRD 2.x

Hybrid PDF/A-3 with embedded XML data (CII). Ideal for the transition: recipients see a familiar PDF while systems process the XML automatically.

XRechnung

Pure XML format (UBL or CII) — the German standard for invoices to public authorities and fully usable in B2B from 2025.

Peppol BIS Billing 3.0

International standard for cross-border exchange via the Peppol network — compatible with XRechnung.

Our services

From analysis to go-live.

We don't treat e-invoicing as an isolated topic — we make it part of your electronic document exchange. The result is an end-to-end solution: from receiving through validation and posting to audit-proof archiving.

  • Analysis of your invoice processes and selection of the right format
  • Integration with your ERP (SAP, Microsoft Dynamics, Sage, DATEV, etc.)
  • Creation & validation of ZUGFeRD and XRechnung files
  • Integration into existing EDI infrastructure (AS2, OFTP2, Peppol)
  • Archiving & GoBD-compliant retention
  • Training for your staff and ongoing support
Why Knop

Personal service, deep integration.

20+ years of EDI practice

We know the pitfalls in mappings, validation and partner onboarding — and how to avoid them.

End-to-end integration

E-invoicing isn't an island. We connect it with your EDI, ERP and archive landscape.

Compliance you can rely on

ZUGFeRD profile, XRechnung schema, Peppol connectivity — delivered, validated and documented.

FAQ

Answers to the most common questions.

What is an e-invoice under the German Growth Opportunities Act?+

An e-invoice is an invoice issued, transmitted and received in a structured electronic format that allows automated processing. Plain PDF invoices do not meet this requirement — only formats such as ZUGFeRD (profile EN 16931 and above) and XRechnung are compliant.

Do I need ZUGFeRD or XRechnung?+

ZUGFeRD is a good fit when recipients also need a readable PDF — typical for smaller business partners. XRechnung is mandatory for public authorities and fully usable in B2B. In practice, many companies operate both formats in parallel.

What happens if I don't meet the receiving obligation from 2025?+

You are legally required to accept e-invoices — otherwise an invoice is considered delivered even though you cannot process it. This can lead to loss of early-payment discounts, dunning and tax-related issues.

How long does implementation take?+

Pure receiving (validation + archiving): typically 2–4 weeks. Full sending and ERP integration: 6–12 weeks, depending on your system landscape and the number of business partners.

Ready for e-invoicing?

In a 30-minute intro call we clarify your status, what needs to happen and the next steps — free of charge and without obligation.

Book a call