What is Peppol?
Peppol is a secure network for exchanging electronic invoices between businesses. It will be mandatory across Europe from 2030 and in Belgium from 2026. Learn how Peppol and electronic invoicing work.
How to register on the Peppol network with BILLY?
On BILLY, it's very straightforward — you are automatically registered when you sign up. You can check your registration status via Settings > Peppol. How to register on the Peppol network via BILLY?.
Check whether your client is registered
Go to the Income section in your BILLY app
Click New, then Create an invoice
In the Client section, click Create a client or Select an existing client
Enter your client's VAT number (BE + 10 digits)
Using the VAT number, BILLY automatically detects whether your client is ready to receive an invoice via Peppol. The information is displayed immediately after you enter the VAT number:
Send the invoice via Peppol
There are two possible situations:
1️⃣ Your client is available on Peppol
You will have access to the "Send via Peppol" option. Simply choose "Yes". And... that's it — BILLY takes care of creating the invoice in the correct electronic format and sending it over the network.
2️⃣ Your client is not available
There is nothing you can do about it. Simply send your invoice as usual, most likely by email.
New invoice or imported invoice
You can create a new invoice with BILLY or import an invoice you created yourself using another tool (such as Excel or Word).
In both cases, you need to specify a valid client. This is what unlocks the option to send via Peppol.
⛔ Invoices that have been sent can no longer be edited. You will need to issue a corrective credit note, which must also be sent via Peppol.
Check the sending status of an invoice via Peppol
In the invoice list, you can check the sending status of an invoice by hovering over the Peppol icon:
You will also find the sending signature there. This is the code that proves your invoice was successfully delivered to your client — useful in case of a dispute.
Settings
In the app's Settings, go to the Peppol section.
There you can:
Check your registration and your identifier
Unregister from the Peppol network
Enable self-billing (if you use self-invoicing, particularly relevant for lawyers)
Frequently asked questions
Do I need to send all my invoices via Peppol?
No, only when the invoice is sent to a business (with a company number) that is subject to VAT. Peppol does not apply if you are invoicing a private individual.
If my client is based in another European country, do I need to send via Peppol?
Currently, electronic invoicing is an obligation managed at the country level. Belgium has decided to make it mandatory from 2026, but each country has its own deadlines. It won't be mandatory across the whole of Europe until 2030.
What should I do if my client is not available on Peppol?
There is nothing to do — just continue sending your invoice as normal.
Is there a list of clients registered on Peppol?
Yes, there is a public directory. You can check it if you wish. However, it's not necessary — BILLY handles this automatically for you when you create or import your invoice.
Is there an additional cost?
No, connecting to the network and transferring your invoice is included in your BILLY subscription.
How can I track the sending of my invoice on the Peppol network?
You can check the sending status of an invoice in the list of sent invoices. If the invoice has been successfully transmitted, you will also see the electronic signature of your submission, which certifies that you sent the invoice via Peppol.
Do you have questions about Peppol? Contact us via live chat 😇 You can also read our article on receiving supplier invoices via Peppol.
See you soon