What is an e-bill?

Starting January 1, 2025, e-invoicing will be the new standard in German B2B business and is a key component of legally compliant, efficient accounting—especially for e-commerce companies. Companies that systematically transition their processes to digital invoice formats such as XRechnung or ZUGFeRD now will reduce manual effort, minimize errors, and avoid tax risks.​

What is an e-bill?

An e-invoice is an invoice in a structured electronic format that enables automatic, fully digital processing. Under German law, it is defined in the Value-Added Tax Act (§ 14 UStG) in conjunction with the European standard EN 16931; therefore, invoices in PDF-only or paper format are no longer considered “e-invoices” in the legal sense.​

The key feature is a machine-readable data set (e.g., XML) that contains all the required information on an invoice and can be imported into accounting and ERP systems without any loss of data integrity. A human-readable PDF may be included as an option, but the structured data portion is what determines whether the invoice is accepted.​

Legal Framework in Germany

The requirement for e-invoicing in the B2B sector is enshrined in the Growth Opportunities Act and takes effect through amendments, particularly to Section 14 of the Value-Added Tax Act (UStG). As of January 1, 2025, e-invoicing in accordance with EN 16931 is generally required for taxable and tax-liable domestic B2B transactions, supplemented by transitional provisions.​

Companies must be able to receive e-invoices and, in the medium term, may no longer use purely paper-based or PDF-only invoices as the standard solution in B2B transactions. Exceptions and transition periods apply, among other things, to certain low-value invoices up to 250 euros as well as to some tax-exempt transactions, which are explained in detail by the Federal Ministry of Finance.​

Deadlines and Transitional Provisions

As of January 1, 2025, the e-invoicing requirement applies to domestic B2B transactions, though with phased transitions based on company size and invoice type. In the initial years, sending certain invoices in other formats will generally still be tolerated, provided the recipient consents and technical limitations exist; however, a complete transition is expected within a few years.​

The requirement to issue invoices within six months of the service being performed or the goods being delivered remains unchanged; this also expressly applies to e-invoices. Companies should therefore configure their systems to ensure consistent compliance with both the deadlines and the formal requirements for the structured format.​

Consequences of Noncompliance

Anyone who ignores the e-invoicing requirement or uses incorrect formats risks facing tax and organizational penalties. Serious consequences may include:​

• Denial of input tax credit to the invoice recipient if an invoice is not recognized as a valid e-invoice.​

• Objections raised during tax audits, as well as estimates and additional tax assessments by the tax authorities.​

• Contract and payment risks in B2B business when customers reject invoices because they do not comply with the agreed-upon or statutory e-invoicing standards.​

In addition, efficiency and transparency suffer when media breaks and manual rework are required, even though digital standards are legally mandated and technically available.​

XRechnung: Mandatory Format for Public Contracting Authorities

XRechnung is the standard defined in Germany for e-invoices sent to public-sector clients (B2G) and is based on a purely XML-based data set. This format is exclusively machine-readable and meets the requirements of the EN 16931 standard as well as specific guidelines set by the public administration.​

XRechnung is the required or preferred format—particularly for invoices sent to the federal government, state governments, and many local governments—and is integrated into electronic invoice processing platforms. For e-commerce companies whose customers include public sector clients, the ability to create and transmit XRechnungen is therefore essential.​

ZUGFeRD: A Hybrid Format for Practical Use

ZUGFeRD is a hybrid e-invoice format that combines a human-readable PDF/A-3 portion with an embedded, structured XML file. The recipient sees a “normal” PDF invoice, while accounting systems can automatically extract the XML data record without manual entry.​

The newer ZUGFeRD versions 2.x comply with EN 16931 and are therefore generally recognized as e-invoices in the legal sense. For many B2B relationships in the private sector, ZUGFeRD is a pragmatic way to introduce e-invoices without forcing users to use a pure XML format.​

XRechnung vs. ZUGFeRD: An Overview

Both formats meet the requirements for e-invoices, but differ in structure and typical use cases.​

In e-commerce in particular, a combination makes sense: XRechnung when dealing with public contracting authorities, and ZUGFeRD or comparable formats in day-to-day B2B transactions with trading partners and marketplaces.​

To remain compliant with the law while also maximizing efficiency, e-commerce companies should take a holistic approach to their invoicing processes. Key steps include:​

• Review and document the legal situation
  Determine which transactions are subject to the German e-invoicing requirement (domestic B2B transactions, specific industries, public sector clients).​
  Define review processes to determine when to use which invoice type (B2B, B2C, B2G) and in which format.​

• Adapt IT systems and interfaces
  Ensure that ERP systems, e-commerce platforms, and payment service providers can generate and receive e-invoices in accordance with EN 16931—such as XRechnung and/or ZUGFeRD.​
  Convert interfaces to accounts receivable, payment service providers, and marketplaces to use structured e-invoice data.​

• Automate accounts receivable processes
  Link incoming and outgoing invoices with automatic capture, assignment, verification, and archiving.​
  Set up dunning and receivables management based on structured invoice data to efficiently track open items.​

• Ensure Archiving and Traceability
  Archive e-invoices in an audit-proof manner and within the required timeframes, including the original structured data records.​
  Provide complete documentation of processes to confidently respond to tax audits and inquiries from tax authorities.​

E-Invoicing in Everyday E-Commerce

In e-commerce, high transaction volumes are coupled with complex payment flows—such as those arising from marketplaces, international sales, or various payment methods. Structured e-invoice formats provide transparency regarding payments, fees, returns, and taxes across all channels.​

In practical terms, this means:

• Automated invoice generation based on store and Payment data, including the correct sales tax for each country and channel.​

• Daily reconciliation of cash flows with accounts receivable entries to accurately post outstanding receivables, chargebacks, and refunds.​

• Use dashboards and reporting solutions to track key metrics in real time and identify bottlenecks early on.​

IDEAL GROUP: Your Partner for E-Invoicing & Accounts Receivable

IDEAL GROUP specializes in fully integrated e-commerce processes, including accounts receivable, payment processing, and compliance. Using modern, largely automated accounting services, e-invoices are systematically integrated into the entire e-commerce workflow—from invoice creation to payment reconciliation and dunning, all the way through tax reporting and archiving.​

This gives companies up-to-date transparency regarding receivables, incoming payments, and tax matters, without having to familiarize themselves with all the technical and legal details of e-invoicing. The IDEAL GROUP handles the operational implementation behind the scenes, while you focus on growth, product assortment, and customer loyalty.​

The IDEAL GROUP is happy to serve as your partner for all matters related to e-commerce accounting, accounts receivable, payment processing, and e-invoicing—from the initial assessment of your systems to full, legally compliant implementation in your day-to-day operations.