- Since January 2026, B2B e-invoicing in Belgium is conducted via the Peppol network, but receiving an e-invoice does not mean the buyer has legally accepted it.
- A supplier invoice must still be disputed promptly if incorrect; otherwise, it may be treated as accepted and create a payment obligation.
- An internal accounting status such as “rejected” or “on hold” is not a valid legal objection unless the supplier is actually notified.
- Invoice disputes should be made in writing and be provable, ideally by email or certified mail, clearly identifying the invoice and explaining the grounds for objection.
- Common valid dispute reasons include undelivered work, incorrect quantities or prices, defective/incomplete goods or services, or duplicate/unjustified invoices; prompt action is essential, with 7–14 days often cited as a practical timeframe.
Source: auxadi.com
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.
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