What is an XRechnung?

The German standard for structured electronic invoices, an XML format following EN 16931 in CII or UBL 2.1 syntax. Public-sector clients require it and B2B e-invoicing is becoming mandatory in Germany.

What is ZUGFeRD / Factur-X?

A hybrid format: a normal, readable PDF invoice with the structured XML (factur-x.xml) embedded inside, so both humans and accounting systems can process it.

Do I need accounting software to use E-Rechnung?

No. The app creates compliant files on its own; you fill in the invoice and export. A full conformance check, for example with the KoSIT Validator, is a separate step.

One compliant e-invoice every month is free, forever. Pro unlocks unlimited e-invoices.

Where is my invoice data stored?

On your device. The app needs no cloud account.

Business · iOS

E-Rechnung

Ready for Germany's B2B e-invoicing mandate: one tap turns your invoice into a compliant XRechnung or ZUGFeRD file.

Coming soon to the App Store

XRechnung · ZUGFeRD / Factur-X · EN 16931 · Data stays on device

§ Screens

E-Rechnung invoice editor with field validation

E-Rechnung export as XRechnung or ZUGFeRD

Fill in the invoice, tap export, send a file that gets accepted.

§ Overview

What it does

Germany's mandatory B2B e-invoicing means unstructured PDFs will bounce back. E-Rechnung produces structured invoices your clients' systems accept: XRechnung XML (CII or UBL 2.1) or a ZUGFeRD/Factur-X PDF with the XML embedded, all to the European standard EN 16931.

Every required field is checked as you type, so invoices do not get rejected for missing data. Leitweg-ID for public-sector clients, VAT breakdown, reverse charge and intra-community supply categories are built in.

Saved clients and a reusable company profile (VAT ID, IBAN, BIC) make the second invoice faster than the first. Your data stays on the device, no cloud required.

§ Features

Why E-Rechnung

Mandate ready

Send invoices that portals and clients accept.

Field validation

Every required field checked as you type, so nothing bounces.

One tap to a file

XRechnung XML or a ZUGFeRD PDF with embedded factur-x.xml.

Public sector ready

Leitweg-ID (buyer reference) support built in.

Proper VAT handling

VAT breakdown, reverse charge and intra-community supply.

Private by design

Your data stays on device, no cloud required.

§ FAQ

Questions

What is an XRechnung?: The German standard for structured electronic invoices, an XML format following EN 16931 in CII or UBL 2.1 syntax. Public-sector clients require it and B2B e-invoicing is becoming mandatory in Germany.
What is ZUGFeRD / Factur-X?: A hybrid format: a normal, readable PDF invoice with the structured XML (factur-x.xml) embedded inside, so both humans and accounting systems can process it.
Do I need accounting software to use E-Rechnung?: No. The app creates compliant files on its own; you fill in the invoice and export. A full conformance check, for example with the KoSIT Validator, is a separate step.
Is E-Rechnung free?: One compliant e-invoice every month is free, forever. Pro unlocks unlimited e-invoices.
Where is my invoice data stored?: On your device. The app needs no cloud account.

From the blog

E-invoicing guides

Read the guides →

§ Support

Support & contact

Questions, bug reports or feature requests for E-Rechnung? Email info@landauer.de and include your iOS version and a short description of the issue. Support requests are typically answered within a few days.

Subscriptions: Pro plans are billed through your Apple ID and can be managed or cancelled anytime in Settings, Apple ID, Subscriptions on your iPhone.

Need to convert existing PDF invoices in bulk instead of creating new ones? Our web app TaxLayer turns PDF invoices into ZUGFeRD and XRechnung files with AI extraction and KoSIT validation.

Privacy: see the privacy policy and terms of use that apply to all SnapMonoLab apps.