E-invoicing , also known as e-invoicing, involves submitting and receiving an invoice in a structured, electronic format that allows for automatic and electronic processing of the invoice. All mandatory invoice data must be included on the e-invoice. An invoice sent by email in .pdf, .doc or .xls format cannot be automatically processed by the recipient and is therefore not considered an e-invoice.

The IT systems on the sender and receiver sides need to communicate with each other in order to process an invoice automatically. Peppol is a European network set up by the Member States for the exchange of standardised electronic documents. It is now managed by OpenPEPPOL

E-invoicing or e-invoicing makes invoicing and getting paid, as well as paying your received invoices, faster and more efficient, the administrative actions around invoicing become lighter and easier. E-invoicing is also more reliable and safe. It is of course also cost-reducing, there is no more paper needed, and therefore more sustainable.