Formats & standards
What is Peppol, and do I need an access point?
Peppol is the network many EU countries use for mandatory e-invoicing. A plain-language explanation of Peppol, the 4-corner model, what an access point is, and how it differs from a government clearance platform.
Last reviewed 2 June 2026
If you do business in Belgium, the Netherlands or other Peppol-based countries, you will keep hearing two words: Peppol and access point. Here is what they actually mean, without the jargon.
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Peppol is a network, not a file format
Peppol (governed by the non-profit OpenPeppol) is a network and set of rules that lets businesses exchange e-invoices and other documents reliably across borders. It is not itself a file format, over Peppol you typically send a Peppol BIS Billing 3.0 invoice, which is a profile of the European standard EN 16931 expressed in the UBL XML syntax.
The 4-corner model and access points
Peppol works on a 4-corner model. Corner 1 is you (the sender). Corner 2 is your access point. Corner 3 is your customer's access point. Corner 4 is your customer. An access point is a certified service provider that connects you to the network, validates your documents and routes them securely.
The practical takeaway: you do not join Peppol directly. You sign up with a Peppol-certified access point (often built into invoicing or accounting software), and from then on you can reach any other business on the network.
Peppol vs a government clearance platform
Not every country uses Peppol. There are two broad architectures. In the Peppol / interoperability model (used by Belgium, planned for the Netherlands, and part of France's setup), invoices travel between private access points. In the clearance model (Italy's SdI, Poland's KSeF, Romania's e-Factura), invoices first pass through a government platform that validates and clears them.
Knowing which model your country uses tells you what you need: a Peppol access point, a connection to a national platform, or both.
Frequently asked questions
Do I need a Peppol access point?
If you must send or receive invoices over Peppol (for example under Belgium's mandate), yes, you connect through a Peppol-certified access point rather than joining the network directly. Many invoicing and accounting tools include one.
Is Peppol a file format?
No. Peppol is a network and governance framework. The invoice you send over it is usually a Peppol BIS Billing 3.0 document, a profile of EN 16931 in the UBL XML syntax.
What is the difference between Peppol and a clearance system like KSeF?
Under Peppol (e.g. Belgium), invoices travel between private access points. Under a clearance system (e.g. Poland's KSeF, Italy's SdI), invoices first go through a government platform that validates and clears them before they reach the buyer.
This guide is general information, not legal or tax advice. E-invoicing rules and dates change; always confirm the current position with the official source below or a qualified adviser before acting.
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