← All Services

Stay tuned for September · September 2026

Compliance

Custom EU invoicing for your Shopify store.

Rechnungen with all Pflichtangaben. OSS VAT, reverse charge, Kleinunternehmer rules built in. No per-order fees — ever.

Book a ConsultationSee What's Included

Fixed Price

No hourly billing

3-5 weeks

Planning, build, tests

Code You Own

Source code + handover

01 — The Problem

Why Off-the-Shelf Invoicing Apps Fail in Germany

Most Shopify invoicing apps were built for the US market. They produce documents that look like invoices but lack the legally required Pflichtangaben under §14 UStG: sequential invoice numbers, your Steuernummer or USt-IdNr, the customer's full address, net amounts, applicable VAT rates per line item, and the proper reverse charge notice for B2B EU sales.

The result: receipts your customers' Steuerberater rejects, Abmahnungen from competitors, and €1,000-€5,000 in legal fees fixing what shouldn't have been broken in the first place. We've seen DACH stores with 5,000+ orders/month running invoicing apps that produced non-compliant Rechnungen for years before an audit caught it.

02 — Our Solution

What We Build

A custom invoicing app that lives inside your Shopify admin and generates compliant Rechnungen automatically:

Full Pflichtangaben: Sequential numbering, Steuernummer/USt-IdNr, complete buyer/seller addresses, VAT rates per line item, net/gross totals.

OSS VAT (One-Stop-Shop): Correct destination-country VAT rates applied automatically. Quarterly OSS report exports for your Steuerberater.

Reverse charge: Detects valid EU VAT IDs, applies 0% VAT with proper reverse charge notice, flags transactions for the Zusammenfassende Meldung.

Kleinunternehmerregelung: If you operate under §19 UStG, invoices show no VAT and include the required notice automatically.

GoBD-compliant storage: Tamper-proof archival with timestamps, change logs, and 10-year retention as German tax law requires.

Multi-format export: PDF for customers, CSV for DATEV, XRechnung for B2B public sector clients.

03 — For Your Market

Built for DACH Operations

Every detail of the DACH invoicing process is handled by default — not as an afterthought:

Direct integration with your Shopify orders so invoices generate the moment payment captures. Custom invoice templates that match your brand and include your Impressum information. Automated email delivery in German with proper subject line conventions. Storno-Rechnungen (credit notes) for refunds. Sammelrechnungen (collective invoices) for B2B customers with multiple orders. Compatible with all standard DACH carriers for shipping documentation.

04 — Replaces

Replaces Apps Like

Sufio ($19-149/month + per-invoice fees), Order Printer Pro ($10-30/month), Billbee (€9-99/month), JTL-Wawi connectors, and several DACH-focused invoicing tools. Most stores running combinations of these spend €600-2,400/year on invoicing alone — and still produce non-compliant Rechnungen for edge cases (B2B reverse charge, Kleinunternehmer toggling, multi-currency VAT).

Our custom build replaces all of them with one app you own. No per-invoice fees. No subscription. No vendor lock-in. See how app fees compound at scale.

FAQ

Frequently Asked Questions

Will the invoices be accepted by a German Finanzamt?

Yes. We build to §14 UStG specifications including all required Pflichtangaben (sequential numbering, Steuernummer/USt-IdNr, complete buyer and seller addresses, VAT rates per line item, net and gross totals, and proper reverse charge notices for B2B EU sales). Storage is GoBD-compliant with tamper-proof archival and 10-year retention. We work with your Steuerberater during build to verify edge cases.

How long does a custom EU invoicing app take to build?

Typical end-to-end timeline is 3-5 weeks for a standard DACH invoicing setup, covering scoping, development, integration testing, Steuerberater review, and launch. More complex requirements (multi-store, B2B portals, DATEV/XRechnung deep integration, multi-language) add 1-2 weeks. We provide a fixed-price quote after the initial scope call.

What happens after the app is built — do I pay ongoing fees?

No. You own the source code, the Shopify Partner app entry, and all the data. We hand over the repository, documentation, and 30 days of post-launch support included. Optional maintenance contracts are available if you'd rather not host or update it yourself, but they're never required.

Ready to cut your app stack?

A 30-minute call. We walk through your current app stack and identify concretely what can be replaced with a custom build — and what shouldn't.

Book a Consultation

3-5 weeks · Fixed Price · Code You Own