Since Belgium's B2B e-invoicing mandate (January 1, 2026), the KBO/BCE number is the primary identifier for businesses on the Peppol network. It maps to Peppol scheme ID 0208.
Format
10 digits, typically displayed with dots: 0XXX.XXX.XXX. In e-invoices, dots are omitted — just the raw digits.
In Peppol E-Invoices
The KBO/BCE number identifies both the sender and receiver:
0123456789
Important: use the enterprise number (10 digits), not the VAT number (which adds 'BE' prefix + different format). They refer to the same entity but are formatted differently.
Common Errors
Wrong identifier used — the Belgian VAT number (BE + 10 digits) is not the same as the KBO/BCE number, even though they share digits. Using scheme ID 9925 (Belgian VAT) instead of 0208 (KBO/BCE) is a frequent integration mistake.
Incorrect length — the number must be exactly 10 digits. Leading zeros matter.