
Digital invoicing is becoming a standard requirement across Europe and beyond. With Rentsyst + Billit integration, car rental businesses can automate invoicing and stay compliant using the PEPPOL e-invoicing standard. This guide walks you through the integration flow and explains how to get started.
What is Billit?
Billit is a certified PEPPOL Access Point provider that enables businesses to send, receive, and manage electronic invoices in a standardized format. By connecting Billit to Rentsyst, you can:
PEPPOL (Pan-European Public Procurement Online) is the global standard for secure and structured electronic invoicing. For car rental businesses, it ensures:
More details about PEPPOL global standards.
Here’s how the integration works step by step:
1. Create or login to Billit Account with https://my.billit.eu/

1.1. Sign up in Billit and complete your business profile:
1.2. Once registered, you gain access to the Billit account.

2.1. In your Billit dashboard you need following credentials:
2.2. Api access token located inside your Account profile – click My profile on your avatar right corner and scroll down to API key:

2.3. Party ID located inside your domain name on My company page.
Copy numeral code – this is your party id.

On the screen – yellow is your full domain name, green color highlights your Party ID.
In your Rentsyst admin panel:
3.1. Go to Settings → Integrations & Agents → Accounting & e-Invoicing:
3.2. Select Billit

3.3. Enter your API credentials and press “Connect”

3.4. Now “Save” to activate integration

Your Billit logo will be active now.

4. Testing
4.1. Once your rental is over and have DONE (completed) status, Rentsyst will automatically sync Invoices and deliver it into your Billit account. From there you will be able to deliver invoices to PEPPOL.

E-invoicing and Peppol solutions for any type of business
✅ Full PEPPOL Compliance. Stay aligned with EU and international e-invoicing regulations.
✅ Faster payments. Structured invoices are processed quicker by clients’ systems.
✅ Automation. Reduce manual work and eliminate human errors.
✅ Cross-border ready. Send invoices to clients in different countries using one standard.
RentSyst and Billit integration brings your car rental invoicing to the next level by leveraging the PEPPOL e-invoicing standard.
Connect Billit to Rentsyst and start sending PEPPOL-compliant invoices in minutes.
Automate your billing, reduce errors, and stay ahead of evolving e-invoicing regulations.


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