e-Rechnung Inbox: an AI inbox for Germany's 2025 e-invoicing mandate
An in-house LLM pipeline that lifts ZUGFeRD and XRechnung data out of any inbound invoice — ERP-ready.
Challenge
From 2025 onward, structured e-invoicing is mandatory for B2B in Germany. Classic OCR breaks on layout variety. Standard XRechnung tooling assumes the sender already produces a compliant XML — and SMEs typically don't, for months. Finance teams need a buffer that turns a mixed inbox (PDF, image scans, ZUGFeRD, XRechnung XML) into one clean format — GDPR-compliant and without US services.
Solution
e-Rechnung Inbox is a standalone inbox: invoices arrive by email, upload or drop folder, and a two-stage pipeline of document OCR and a fine-tuned LLM extracts structured fields (tax ID, period, line items, VAT categories, IBAN). The output is validated against the XRechnung and ZUGFeRD schemas, auto-corrected where safe, and emitted as compliant XML. A per-field confidence score tells the finance team where a human glance is needed. The entire processing pipeline runs on EU infrastructure — no data leaves the EU.
Technologies
Results
LLM extraction yields XRechnung & ZUGFeRD-compliant XML from PDF/scan
Per-field confidence — human-in-the-loop only where it counts
ERP-ready export (DATEV, SAP, lexoffice) over API
100% EU hosting, GDPR-compliant, no US services