Simplify the Billing Process with EGroupware's e-invoicing app

With the introduction of mandatory e-invoicing in Germany on January 1, 2025, EGroupware has developed an invoicing application. It enables the creation and receipt of e-invoices in compliance with EU standard EN 16931, supporting both XRechnung (XML format) and ZUGFeRD (hybrid PDF/XML). The PDF layout is customizable with placeholders, while the XML part is automatically generated in the required format.

Electronic invoicing with EU standard EN 16931

There are two common e-invoicing procedures: XRechnung, a pure XML format used as the standard for public administration, and ZUGFeRD, a hybrid model combining a structured XML file with a readable PDF.

Layout of the invoice

The PDF part of the invoice is based on a placeholder document in which you can arrange your logo and all data as you wish, including the table with the invoice items. The XML part is generated automatically in a standardized format.

App configuration

In the app configuration, you can define up to three standard sellers and add further contractual partners, such as invoice recipients or end customers, depending on the complexity of your business relationships. These partners can simply be selected from the address book and in the configuration you specify in which user-defined field of the contact, for example, the customer number or the VAT ID are stored.

Payment information

Payment information, service periods and general texts can be easily entered. Items with descriptions, quantities, net prices and tax rates can be listed in the invoice items. VAT and the total price are calculated automatically and displayed as a total. There is also a breakdown according to tax rates.

Invoice draft status

As long as an invoice is in draft status, all data can be adjusted or test prints can be created. However, if an invoice is in “Calculated” status, it can only be canceled and the data can no longer be changed. A notes field allows you to add remarks to the invoice, such as the date of a payment reminder or reminder.

Import of local invoices

Import of local invoices: You can currently import e-invoices (structured XML or pdf with XML) into the invoice app via the “Import” button and check them. There are plans to gradually expand the invoice app so that, for example, XML invoices can be displayed and imported directly from the mail app. Additional import interfaces and export options and further reporting are planned.

Test the new app

The full version of the new EGroupware EPL app has been available since this weekend. Feel free to contact us if you need a test version, if you would like us to introduce you to the app for e-invoices or if you have any questions or suggestions.

Customer testimonials

Martin Reinhardt

Head of Department Kommunale Immobilien Jena DV-TK

We chose EGroupware because the solution made the most mature impression among the open source solutions at the time of the decision. We use the modules calendar, infolog, address book…
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Ines Mense

Fachbereich EDV I, Stadt Ochtrup

EGroupware ist mit aktuell 90 Nutzern seit 2009 im Einsatz. Als Basis für alle täglichen Arbeitsabläufe der Stadtverwaltung ist die Software nicht mehr wegzudenken. Die Stadtverwaltung Ochtrup organisiert die öffentlichen…
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Andreas Lehmann

The hydrogen and fuel cell center ZBT

The decision was made to use the EPL because it is almost identical to our in-house predecessor software, which was no longer up to our requirements. The migration of the…
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