E-Rechnung Mandate: How Odoo Streamlines Electronic Invoicing Compliance for Every Business

By Christina Berg, Consultant at FlexCode Systems

Germany has officially entered a new era of digital invoicing. As of January 1, 2025, mandatory electronic invoicing (E-Rechnung) for business-to-business (B2B) transactions has become a legal requirement, affecting companies of all sizes operating in the German market. This regulatory shift represents one of the most significant changes to German business operations in recent years.

Understanding Germany's E-Rechnung Requirements

The Regulatory Framework

The first phase of Germany's B2B e-invoicing mandate requires all German businesses to be able to receive e-invoices for B2B transactions, regardless of size or annual turnover. The implementation follows a phased approach:

Phase 1 (January 1, 2025 - December 31, 2026):

• All businesses must be able to receive electronic invoices
• Businesses with a maximum turnover of €800,000 in the previous year can still send traditional invoices with recipient consent

Phase 2 (January 1, 2027 onwards):

• Full mandatory e-invoicing for both sending and receiving
• All B2B transactions must use compliant electronic invoice formats

Accepted Electronic Invoice Formats

Germany recognizes several standardized formats:

1. XRechnung: A semantic data model based on XML, required for B2G (business-to-government) invoices
2. ZUGFeRD: A hybrid invoice format combining a PDF with embedded XML data, providing flexibility for both traditional PDF-based workflows and automated digital processes
3. Peppol BIS: Another accepted format alongside XRechnung and ZUGFeRD 2.0/2.1

The Business Challenge: Compliance Without Disruption

For many businesses, especially SMEs, the e-invoicing mandate presents a significant operational challenge. Companies need to update their invoicing systems to generate and receive compliant formats, train staff on new processes, and integrate e-invoicing with their existing accounting and ERP systems, all without disrupting daily operations.

How Odoo Enables Seamless E-Rechnung Compliance

Odoo has built comprehensive e-invoicing capabilities directly into its accounting module, making compliance straightforward.

Native Support for German E-Invoice Formats

Odoo supports XRechnung and ZUGFeRD natively. Invoices can be generated in these formats automatically, with no additional plugins or manual conversion required. This means your business can send and receive compliant e-invoices from day one.

Automated Invoice Processing

When you receive an e-invoice in XRechnung or ZUGFeRD format, Odoo can automatically extract the relevant data and create a draft bill in your accounting system. This eliminates manual data entry and reduces the risk of errors.

Peppol Network Integration

Odoo supports Peppol, the European e-invoicing network that enables businesses to exchange invoices electronically across borders. For companies operating in multiple EU countries, this is particularly valuable.

Audit-Ready Record Keeping

Odoo maintains a complete, tamper-proof record of all invoices sent and received, including the original electronic files. This simplifies audits and ensures compliance with German GoBD requirements for digital document retention.

Getting E-Rechnung Ready with FlexCode

Implementing e-invoicing compliance in Odoo requires careful configuration, especially for businesses with complex billing scenarios, multiple legal entities, or cross-border transactions. FlexCode specializes in Odoo accounting implementations for German businesses, ensuring your system is fully configured for E-Rechnung compliance before the deadlines hit.

Contact FlexCode today to ensure your business is ready for Germany's e-invoicing mandate.