Germany already requires businesses to receive structured e-invoices, and sending becomes mandatory from 2027 (2028 for smaller firms); Belgium, Poland and France follow. A PDF is no longer enough. Fill in the form, get a UBL or CII XML file, and see it checked against the preflight rules before you download it. Totals and the per-rate VAT breakdown are worked out for you. Nothing is uploaded.
Document
Seller (you)
Buyer
Payment
Lines
Description
Qty
Unit
Unit price (net)
VAT %
VAT category
Exemption reason
0% needs a category: Z zero-rated, E exempt (e.g. Kleinunternehmer § 19 UStG), AE reverse charge, K intra-EU supply, G export, O outside scope. All but Z need a reason.