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#mandatory invoice details

Compliance & regulation8 min read

Non-compliant VAT invoicing in Belgium: the scale of proportional and fixed fines, the criminal sanctions, and how to avoid them.

2 October 2026Read article

Compliance & regulation8 min read

Invoice numbering in Belgium: what the law requires, how to build a continuous and unique series, and what e-invoicing changes about it.

15 September 2026Read article

E-invoicing9 min read

The pro forma invoice explained: what it is for, how it differs from a final invoice, its VAT status, and when to issue one for your business.

17 August 2026Read article

Compliance & regulation9 min read

Mandatory invoice details in Belgium: the full list, the VAT number rule, the legal basis in the VAT Code and what changes with Peppol e-invoicing.

Compliance & regulation9 min read

Invoicing rules in Belgium: mandatory invoice details, issuance deadline, sequential numbering, retention and the structured e-invoice for SMEs.