Self-billing (special case of delegated invoicing)
On Számlázz.hu, self-billing is a special business case of delegated (third-party) invoicing: technically it uses the same connection, and the business difference is in the roles.
What is different?
- Delegated invoicing: the delegate issues invoices on behalf of the supplier, and the buyer can be any third party.
- Self-billing: the same model, but the delegate and the buyer are the same company. The buyer issues the invoice to itself, in the supplier's name.
important
For self-billing invoices, the invoice must include the "self-billing" ("önszámlázás") indication. On Számlázz.hu this happens automatically: when the buyer's tax number on the invoice belongs to the delegate company issuing it, the system marks the invoice as self-billing on the printed document and sets the self-billing indicator in the NAV Online Számla data report. You do not need to send any extra field.
The full self-billing process
- Written self-billing agreement. The parties conclude a written agreement on self-billing; this is a legal step outside Számlázz.hu. Legal review is recommended.
- Establish the connection. The buyer company (as delegate) connects to the supplier's Számlázz.hu account with a dedicated user, either in the UI or via API (
action-agent_ceg_mb). - Agree the invoice prefix. Use a separate invoice book for self-billed invoices; see Invoice prefix handling.
- NAV connection. Live invoicing requires a completed NAV Online Számla connection in the supplier's account.
- Issue the invoices. The buyer issues the invoices from the supplier's account, with itself as the buyer; see Issue invoices as self-biller. The self-billing indication is applied automatically.