Technical documentation

Modified on: Wed, 26 Nov, 2025 at 11:37 AM

Self-billing

Enterprises that apply self-billing must also send via Peppol, as self-billing is subject to the e-invoicing requirements applicable from 1 January 2026. The supplier must be registered as a receiver.

Read more:

Please check the latest Self-billing specification on the Peppol Documentation.

Note:

Flowin has been part of Wolters Kluwer since September 2024 and its services are now available via the Wolters Kluwer portal.

New integrators are already using the Flowin API via the Wolters Kluwer portal and can access the documentation via the above link.
Integrators that are currently still using the API via the Ibanity marketplace can access the documentation via Ibanity marketplace