Converting PDF Invoices to Peppol UBL in Belgium: A Step-by-Step Guide

Converting PDF Invoices to Peppol UBL in Belgium: A Step-by-Step Guide Many Belgian businesses still create invoices as PDFs. With the e-invoicing mandate approaching, you need a reliable way to convert these PDF invoices to structured UBL XML format for the Peppol network. Why PDF invoices are no longer sufficient: PDF invoices are designed for human reading, not machine processing. The data is embedded in a visual layout rather than structured fields. Accounting systems cannot process them automatically, and they do not comply with the Belgian B2B e-invoicing mandate. How AI-powered PDF to Peppol conversion works: Step 1: Upload your PDF invoice Simply drag and drop your PDF invoice into Peppol OK. We support both digital PDFs (with selectable text) and scanned documents. Step 2: AI extraction Our system uses advanced AI to identify and extract all invoice fields: supplier details, customer information, line items, quantities, prices, VAT rates, and payment terms. Step 3: Belgian validation Extracted data is validated against Belgian requirements. VAT numbers are checked, structured communication references (+++XXX/XXXX/XXXXX+++) are verified, and IBAN numbers are validated. Step 4: UBL XML generation The validated data is transformed into a Peppol BIS 3.0-compliant UBL 2.1 XML document that includes all Belgian CIUS requirements. The resulting file is ready for submission through the Peppol network. Step 5: Download and send Download your UBL XML file or send it directly through the Peppol network. You also receive a validation report confirming that all Belgian rules have been met. Tips for better conversion results: - Ensure your PDFs have clear, readable text - Always include complete supplier and customer details - Use structured communication references (+++XXX/XXXX/XXXXX+++) for Belgian payments - Include VAT breakdowns per rate (6%, 12%, 21%) - Include the KBO number of both supplier and customer Frequently Asked Questions Q: Can Peppol OK also process scanned invoices? A: Yes, Peppol OK supports both digital PDFs and scanned documents or photos. Our AI extraction can process handwritten or typed invoices, though results are best with clear digital PDFs. Q: How long does PDF to Peppol UBL XML conversion take? A: Most conversions complete in under 30 seconds. Complex invoices with many line items may take up to 2 minutes. You always receive a full validation report after conversion. Q: What if the AI extracts a field incorrectly? A: After extraction, you can review and correct all fields in our user-friendly editing screen. Only then is the final UBL XML file generated. Try Peppol OK for free. Convert your first PDF invoice to Peppol BIS 3.0 UBL XML in under 2 minutes. No installation, no subscription required for your first conversion.