E-billing – of course!

Electronic billing (e-billing) is an easy and safe way to issue a bill. Instead of printing your bill and sending it by post to the Federal Administration, you send your bill information electronically. You save time and money, and your bill can be processed digitally in a quick and consistent manner.
You simply send the bill information to the service provider of your choice, who does everything else for you. Sound easy? It is too!

All relevant information can be found here.