Germany 2027 Sending Mandate: Six Months Out — Who Is Ready and Who Still Isn't
With six months until Germany's January 2027 e-invoicing sending mandate, a new industry snapshot shows most large businesses above the €800k threshold are on track — but mid-market companies still face ERP migration delays.
Six months from today, German businesses with annual revenue above €800,000 must be sending structured e-invoices (XRechnung or ZUGFeRD EN 16931 profile) for all domestic B2B transactions. The 1 January 2027 deadline is confirmed — the Bundesministerium der Finanzen has explicitly ruled out any postponement.
Here is where different segments of the German business market stand right now.
The Ready Segment: Large Enterprises (>€50M Revenue)
German businesses with revenues above €50 million are overwhelmingly ready. This segment was largely already using SAP, Oracle, or Microsoft Dynamics, and EN 16931-compliant e-invoice modules were available in most enterprise ERP products well before 2025.
The main remaining task for this group: customer communication and testing. Sending a structured e-invoice requires the recipient to be able to receive it. Large enterprises are running bilateral tests with their top 50–100 B2B customers to confirm receiving infrastructure is in place.
The Critical Segment: Mid-Market (€1M–€50M Revenue)
This is where the highest concentration of unresolved situations exists. Mid-market businesses typically use:
- DATEV (through their tax advisor) — mostly ready, but dependent on the advisor having upgraded the relevant modules
- Sage 50 / Sage Business Cloud — ready, but some customers have not yet activated ZUGFeRD generation
- Legacy on-premise ERP — the riskiest situation; many of these systems require vendor updates that are still in testing
The Bitkom survey (May 2026) found 11% of businesses above €800k had not started implementation. In absolute numbers, this represents approximately 45,000 German businesses. If they all wait until October or November, software vendor support queues will be severely stretched.
The Common Implementation Paths Being Chosen
Path 1: Upgrade existing software — 71% of businesses ready or preparing. Works well if you are already on DATEV, Lexware, sevDesk, or easybill.
Path 2: Add a ZUGFeRD layer to existing software — 16%. Adding a ZUGFeRD generation library (e.g., Mustang, CII library) to an existing system via API. Practical for developers but requires ongoing maintenance.
Path 3: Switch software entirely — 13%. Some businesses are using the 2027 deadline as the prompt to migrate from legacy desktop software to cloud-based tools. DATEV Unternehmen Online and sevDesk are the most common destinations.
The Six Questions Every Business Should Answer Now
- Does my software generate ZUGFeRD 2.3 at EN 16931 or XRechnung profile? (Not just "Basic")
- Have I validated a sample invoice with the [KoSIT validator](https://www.portalu.de/de_DE/katalog/kv_xrechnung)?
- Have I confirmed my top 10 customers can receive structured invoices?
- Do I have a GoBD-compliant archive for the invoices I will start sending?
- Do I have a delivery method established — email, Peppol, or API? (Email with ZUGFeRD as an attachment is valid)
- Have I set an internal go-live date? (October 2026 is the latest sensible date, to allow for testing)
Source
BMF e-Rechnung implementation guidance: bundesfinanzministerium.de
