E-invoicing · XRechnung & ZUGFeRD · DACH

The e-invoice is coming.
Your system stays.

From 2027, German companies may no longer send paper or PDF invoices to business customers – only structured e-invoices compliant with EN 16931. We bring XRechnung and ZUGFeRD into your existing ERP or custom software. No system replacement, at a fixed price.

The law

What applies, and when

Germany's e-invoicing mandate is law (section 14 VAT Act, as amended by the Growth Opportunities Act) and will not be postponed. It arrives in three stages.

since 1 Jan 2025

Obligation to receive

Every domestic company must be able to receive, process and archive e-invoices – regardless of size.

from 1 Jan 2028

Obligation to issue (stage 2)

The obligation applies to all remaining companies. Exceptions remain only for amounts under EUR 250, B2C and certain tax-exempt supplies.

The real pressure isn't the fine. It's your customer: from 2027 their accounts department will demand the e-invoice, because otherwise their input-VAT deduction is at risk. Whoever can't deliver gets the invoice back – and waits to be paid.
Services

What we do

A clear path from assessment to live operation – with fixed prices and no consultant-speak.

Readiness check

A paid initial assessment: we review your systems and invoicing processes and deliver a documented evaluation with concrete steps and a binding fixed-price quote.

Fixed price from €1,900 Written report KoSIT demo

Integration into your system

We build the module that turns data from your ERP, database or a CSV export into valid XRechnung and ZUGFeRD files, validates and hands them over. Your system stays.

Legacy ERP Custom software Fixed-price project

E-invoicing module for software vendors

Selling industry software with an invoicing feature? We embed the EN 16931 module into your product – white-label – and maintain it as formats change.

White-label ISV Maintenance licence

Maintenance & format updates

XRechnung and ZUGFeRD change several times a year. A maintenance contract keeps your solution compliant – without you having to watch the calendar.

€300–800 / month Version updates SLA

DATEV & tax-advisor handoff

Clean handover to your tax advisor: a structured DATEV-format export instead of PDF chaos. On request we work directly with your firm.

DATEV export Booking data Firm handoff

Validation & proof

Every generated invoice is checked against the official KoSIT validator. You receive validation reports as proof of due diligence – exactly as the Ministry of Finance recommends.

KoSIT validator Validation reports Audit-proof
Process

How a project runs

1 · Readiness check

We analyse your systems, invoice types and edge cases. Result: a report telling you what needs doing – and a fixed price for the work. Paid, open-ended, no sales meeting.

2 · Integration

We build the module, test it with your real invoices against the KoSIT validator and go live in a controlled way. Typical duration: weeks, not months.

3 · Operation & maintenance

Optional maintenance contract: we keep formats current and stay reachable when a customer needs a special invoice. You focus on your business.

Formats & technology

What we work with

Standards-compliant and built on a proven open-source core – no proprietary black box to lock you in.

EN 16931XRechnungZUGFeRD 2.xFactur-XUBLUN/CEFACT CIILeitweg-IDKoSIT validatorMustangprojectPeppol BIS 3.0Peppol Access PointDATEV exportReverse charge (§13b)Credit notesCash discountCSV / AccessNavision / DynamicsSAP IDocREST APIJava
Who we serve

Where the vendor no longer ships updates

Exactly where the vendor no longer delivers an update – or no longer exists at all.

Mittelstand with legacy ERP

Merchandise management from a software house that no longer exists, or a discontinued ERP version. No update is coming – we retrofit e-invoicing.

Custom software

In-house and niche solutions that fit perfectly but don't know the standard. We add exactly the missing piece.

Software vendors (ISV)

Small software houses whose customers need e-invoicing from 2027. We deliver the module to embed instead of learning it yourself.

Trade & wholesale

High invoice volumes and many special cases (partial deliveries, credit notes, cash discount) – exactly the cases standard tools leave behind.

Tax firms

Clients with custom software or a dead ERP that standard DATEV material doesn't help. We are your technical partner for the hard cases.

Trades & services

Businesses effectively invoicing with Word and Excel that need a simple, validated route to a compliant e-invoice.

FAQ

Frequent questions

When does the e-invoicing mandate apply?

Receiving: since 1 January 2025 for all domestic companies. Issuing: from 1 January 2027 above EUR 800,000 prior-year turnover, from 1 January 2028 for everyone else. Legal basis: section 14 VAT Act as amended by the Growth Opportunities Act.

Is a PDF an e-invoice?

No. A structured record compliant with EN 16931 is required – XRechnung (pure XML) or ZUGFeRD 2.0.1+ (PDF with embedded XML). A plain view-PDF does not suffice.

Do I have to replace my ERP?

Usually no. We add a module to your existing system that reads, converts, validates and exports the data. A new ERP is a six-figure, multi-month project – the retrofit takes weeks.

What does it cost?

The readiness check starts at a fixed €1,900. An integration typically ranges from €12,000–30,000 depending on the system, with optional maintenance at €300–800 per month. The readiness check gives you the binding price.

What about reverse charge, credit notes, cash discount?

That's our focus. Mapping these special cases correctly to the standard is the difference between "it works" and "rejected by the recipient". We test them with real documents against the KoSIT validator.

Do you work with my tax advisor?

Yes. We deliver the export in DATEV format and, on request, coordinate directly with your firm so accounting gets clean data instead of PDF piles.

Is this tax advice?

No. We provide technical implementation services – generating and validating standards-compliant e-invoices per EN 16931. Specific VAT questions stay with your tax advisor (section 5 of the German Tax Advisory Act). We don't say "your invoice is VAT-correct", we say "technically compliant with the XRechnung validation rules".

Contact

Let's talk about your readiness check.

Tell us briefly which system you use and what you invoice – we usually reply within one business day with an honest first assessment.