Peppol is becoming the backbone of the 2026 Belgian B2B e-invoicing mandate, and companies of all sizes are preparing to adapt their billing workflows. Yet despite the growing amount of documentation available, many businesses still struggle with practical questions: What happens if I resend the same invoice? Can I invoice foreign clients? Can I correct a document once it’s been sent? Why does Peppol validate some invoices but not others?

As 2026 looms, a lot of myths swirl around e-invoicing and the upcoming obligation for Belgian businesses. Many entrepreneurs hear things like “It’s only for big companies,” or “It’s too expensive,” or “It doesn’t concern me.”At PeppolEDGE , we’ve been through these questions over and over, and we’re here to clear the fog. Here are the 6 most common myths, and what the facts really are. Myth 1: “Peppol & e-invoicing in Belgium is only for B2B (business-to-business)” ❌ False.

Most Peppol failures have nothing to do with the network itself , they come from incorrect or incomplete data. Here are the issues we see every single week