An eInvoice is an invoice sent in a structured digital format that both the sender’s and recipient’s systems can read and process automatically without manual keying. A PDF attached to an email is a digital invoice but not a true eInvoice unless the underlying data is machine readable and ingestible by the buyer’s AP system.

Is eInvoicing Required?

It depends on where you do business. Countries like Italy, Brazil, Mexico, India, Belgium, France, and Germany have rolled out mandatory eInvoicing rules for B2B, B2G, or both. Many large buyers also require eInvoice delivery through AP portals regardless of government mandate. If you invoice buyers in Europe or Latin America, the safe assumption is that compliance requirements apply or will soon.

How Does AP Portal Invoice Delivery Work?

AP portal invoice delivery automates the submission of invoices to a buyer’s AP system (Coupa, Ariba, Taulia, Tungsten, and others) through a direct integration (no supplier login, no manual upload). Billtrust’s AP Portal Delivery connects to more than 260 AP portals, so AR teams send invoices from one platform and the routing to each portal happens automatically.

What's the Difference Between an eInvoice and a PDF Invoice?

A PDF invoice is a digital image of an invoice. A human can read it, but the buyer’s AP system can’t extract the data without OCR or manual keying. A true eInvoice carries structured data (XML, UBL, EDI) that flows directly into AP workflows. PDF is better than paper; structured eInvoicing is better than PDF.

What Is Peppol and How Does It Relate to eInvoicing?

Peppol is an international network that lets businesses exchange electronic invoices through certified access points using a standard format. Adopted across Europe and expanding globally, it’s the backbone of several national eInvoicing mandates. Suppliers connect once to a Peppol access point and can then invoice any buyer on the network.

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Update zur Einhaltung der Vorschriften für die elektronische Rechnungsstellung, April 2026

Gone are the grace periods of 2025. Q2 2026 brings major eInvoicing deadlines globally. See what's changing and what your finance team needs to act on now.