Federal Government (Bund) Invoicing Requirements
Germany uses centralized platforms for receiving electronic invoices in the public sector.These platforms ensure structured invoice submission, validation, and routing to the correct authority.
Platforms
OZG-RE
Platform used by federal states and public institutions for receiving electronic invoices. Widely adopted across regional administrations and connected to national e-invoicing infrastructure.
Mandatory Fields (E-Rechnung-Bund)
Leitweg-ID (BT-10)
Mandatory on every B2G invoice. The Leitweg-ID has a defined structure: routing address (Bund/state + subordinate entities), optional financial address, and two check digits. Example: 04011000-12345ABCXYZ-86.
Payment Terms (BT-9 / BT-20)
Payment date or descriptive text specifying payment conditions.
Recipient IBAN (BT-84)
Payment account identifier for bank transfers.
Issuer Contact (BT-41)
Seller contact e-mail address is mandatory for all federal invoices.
Attachment Constraints
Up to 200 attachments may be embedded in XRechnung
File size typically limited to 10–22 MB depending on the portal
Validation: BR-DE-xx rules check Leitweg-ID, amount consistency, ISO 8601 dates
