BT-9: Payment Due Date
The date on which the payment is due.
Technical Specification
Conditional (0..1), mandatory unless prepaid or direct debit
Semantic data format according to European Standard EN 16931-1
What does BT-9 mean?
The payment due date (BT-9) indicates the deadline for settlement. If a payment instruction is given and no prepayment has taken place, BT-9 is expected by automated accounting software and Schematron rules.
Practice Context: B2B vs. B2G (Public Procurement)
In B2G public procurement, platforms frequently require a concrete due date in BT-9.
XML Syntax & Code Example
<cbc:DueDate>2026-09-27</cbc:DueDate>Business Rules & Schematron Checks
Payment due date (BT-9) shall not be earlier than Invoice issue date (BT-2).
Check BT-9 in your invoice
Use the XML paths above to locate BT-9. A snippet illustrates this field; it is not a complete invoice. After correcting a value in the source application, export and check the entire file again.
Official specifications and rule sets
Requirements depend on the invoice profile and version. Consult the matching specification for mandatory fields, code lists and rules; Peppol-specific requirements do not automatically apply to every ZUGFeRD invoice.
Related Business Terms (BTs)
Create compliant E-Invoices easily
Create XRechnung and ZUGFeRD invoices in Billance and check the exported file locally. Use this guide to understand BT-9 and review your invoice details before sending.