What is ZUGFeRD?

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Everything about the hybrid e-invoice format

Digital invoice format

ZUGFeRD is a hybrid e-invoice format that combines easy readability with efficient, automated processing. It enables companies to provide invoices in both PDF and machine-readable XML format.

Definition ZUGFeRD

“Zentraler User Guidedes Forums elektronische Rechnung Deutschland” is a standardized electronic invoice format that was developed to simplify and automate the exchange of invoices between companies, public authorities and other organizations. It combines a human-readable PDF/A-3 file with a machine-readable XML file that contains all invoice data in a structured format. This combination enables both easy readability for humans and efficient, automated processing by computer systems. Together with XRechnung, ZUGFeRD is one of the two established e-invoice formats in Germany.

Is ZUGFeRD an e-invoice?

Yes, ZUGFeRD is always also an e-invoice. It complies with all applicable EU legal requirements and also offers companies the benefits of digital invoice management. Together with XRechnung, it is one of the two most important e-invoicing standards in Germany.

illustration e-invoice, zugferd

The components

A ZUGFeRD invoice consists of two components, a PDF/A-3 file and an embedded XML file.

PDF/A-3 file
The PDF/A-3 file presents the invoice in an easy-to-understand and visually appealing format. It contains all the typical elements of an invoice in legible form, such as sender and recipient information, invoice number and date, details of the products or services supplied, prices and VAT details as well as payment terms and bank details.
XML file
The XML file is embedded in the PDF/A-3 file and contains the structured data of the invoice. ERP systems and other software solutions can automatically read and process this data, while it is not directly readable by humans. The XML file is based on the internationally recognized UN/CEFACT standard.

How is a ZUGFeRD invoice structured?

Here you can see the typical structure of an XML structure:

Header

  • Invoice date
  • Invoice number
  • Delivery date
  • Currency information

Parties

  • Information on seller and buyer (names, addresses, contact information)
  • Tax numbers and VAT ID no.

Monetary Totals

  • Total amount of the invoice
  • Tax amount
  • Discount information

Line Items

  • Details of the products or services (description, quantity, unit price, tax information)
  • Line positions

Example code of a simple ZUGFeRD XML structure

Advantages at a glance

Interoperability

ZUGFeRD is a standardized format that is supported by many ERP systems and facilitates invoice exchange. As it complies with the European standard EN 16931, it is recognized and can be used throughout Europe.

Increased efficiency

The XML component of ZUGFeRD enables invoices to be processed automatically. This reduces manual effort and minimizes errors, which speeds up processing and payment approval overall.

Cost savings

ZUGFeRD invoices save paper, printing and postage costs, while automated processing reduces personnel costs and uses resources more efficiently.

Legal certainty and compliance

ZUGFeRD invoices meet legal requirements and make archiving easier thanks to the long-term stable PDF/A-3 format.

Transparency and traceability

The PDF/A-3 file combines human readability with an XML file for machine processing, keeping invoice information clear, traceable and analyzable.

Sustainability

The elimination of paper and physical transportation routes with ZUGFeRD reduces the ecological footprint, conserves resources and reduces the environmental impact, which contributes to sustainability.

Free e-book: “E-invoicing from 2025 – What B2B companies need to know now”

A practical guide for companies that want to fulfill the legal requirements for e-invoicing and at the same time benefit from the numerous advantages of digital invoicing.

The following topics await you in the guide:

  • The e-bill: definition and basics
  • Legal framework and new regulations
  • Advantages of e-billing for your company
  • Practical recommendations for optimal preparation
  • Step-by-step checklist for a successful launch
  • Frequently asked questions and answers about e-billing

 

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Mandatory e-invoicing in the B2B sector from 2025

 

The ZUGFeRD format meets the requirements of mandatory e-invoicing in the B2B sector from 2025. This obligation aims to increase the efficiency of invoice processing, combat tax evasion and promote digitalization. The format is based on the European standard EN 16931, which serves as the basis for mandatory e-invoicing in many European countries. Companies that use this format can be sure that they are complying with regulations while benefiting from the advantages of digital invoice processing.

Overall, the ZUGFeRD format offers a future-proof solution that will help companies to comply with the e-invoicing obligation in the B2B sector from 2025 and optimize their processes at the same time.

Which platforms can be used to transmit ZUGFeRD invoices?

E-invoices can be transmitted via various platforms and communication channels that meet both the technical and legal requirements for electronic invoices. Here are some of the most common platforms and methods:

E-invoicing platforms

  • PEPPOL (Pan-European Public Procurement Online): PEPPOL is a network that enables the secure and standardized exchange of electronic documents. Many e-invoicing service providers offer PEPPOL as a transport channel for ZUGFeRD invoices.
  • Specialized e-invoicing service providers: Platforms such as Basware, Tungsten Network, etc. offer comprehensive solutions for sending and receiving electronic invoices, including support for ZUGFeRD.

Web portals

  • Customer and supplier portals: Some larger companies offer their business partners access to special web portals via which invoices can be uploaded and managed. These portals usually also support the ZUGFeRD format.
  • ZRE Bund: The “Zentrale Rechnungseingangsportal des Bundes” (ZRE Bund) is a platform via which federal suppliers can submit electronic invoices. ZUGFeRD is supported by this portal, which facilitates the submission and processing of invoices to federal authorities.

e-mail

 

One of the simplest methods of transmitting ZUGFeRD invoices is by email. The PDF/A-3 file containing the embedded XML data can be attached to the email. This is a widely used method that is particularly suitable for smaller companies.

API interfaces

 

Companies can use API interfaces to transfer ZUGFeRD invoices directly between different systems. This enables direct and automated communication without human intervention.

EDI (Electronic Data Interchange)

 

Electronic data interchange via EDI networks is an established method for exchanging business documents. ZUGFeRD invoices can be converted into EDI formats and sent via these networks.

ERP systems

 

Many modern ERP systems support the sending and receiving of e-invoices directly within the software. This enables seamless integration into existing business processes and reduces manual effort.

Conclusion

The ZUGFeRD format is a modern, efficient and legally compliant solution for electronic invoicing and processing. It combines the advantages of human readability and machine processing in a single document, which offers companies many benefits. By using this format, companies can optimize their processes, cut costs and reduce their environmental footprint at the same time.

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