Peppol for Beginners: An Introduction Guide for Businesses

What Exactly Is Peppol?

If you are a business owner, accountant or freelancer in Luxembourg, you have probably heard the term Peppol without necessarily understanding what it means concretely. Do not worry: this article explains everything in simple terms.

Peppol stands for Pan-European Public Procurement OnLine. It is an international secure network that allows businesses and administrations to exchange electronic commercial documents in a standardised way. Think of it as an "internet for invoices": a universal network where each participant can send and receive electronic invoices, regardless of the software they use.

Concretely, Peppol works like a digital postal network. Each registered business has a unique address (based on its VAT number) and can send invoices to any other network participant, whether in the Grand Duchy, Belgium, the Netherlands or any other country connected to Peppol.

How Does the Peppol Network Work?

The Peppol network is based on three main elements:

1. Access Points

To connect to the Peppol network, a business goes through a certified access point, also called an Access Point. This is a certified service provider that acts as a gateway between your business and the Peppol network. The access point handles transmitting your invoices to the right recipient and receiving invoices addressed to you. A solution like Peppol Box connects you to the Peppol network via a certified access point, without you having to manage this technical complexity.

2. The SMP Directory

Each participant in the Peppol network is registered in a directory (SMP - Service Metadata Publisher). This directory contains the information needed to route documents to the correct recipient, including their Peppol identifier and access point.

3. The Standardised Format

Documents exchanged via Peppol follow standardised formats, primarily the UBL 2.1 format compliant with the European EN 16931 standard. This ensures that invoices are understandable by all systems connected to the network, regardless of the software solution used.

Why Peppol Is Important Here

In the country, Peppol holds particular importance for several reasons:

• B2G obligation: since March 2023, Peppol is one of the two authorised channels (along with MyGuichet.lu) for invoicing public bodies
• Open economy: the Grand Duchy, with its strong international orientation, particularly benefits from a cross-border network like Peppol
• Belgian impact: neighbouring Belgium has made B2B electronic invoicing mandatory via Peppol, which directly concerns businesses with Belgian clients or suppliers
• National strategy: the Ministry of Digitalisation actively encourages Peppol adoption as part of its digital transformation strategy

The Peppol Identifier in Luxembourg

Here, your Peppol identifier is based on your VAT number (LU format followed by 8 digits). It is this unique address that allows other network participants to send you invoices and for you to receive them.

When you register via a compliant Peppol solution, your VAT number is registered in the Peppol directory. From that moment, any business connected to the Peppol network worldwide can find you and send you electronic invoices.

Getting Started with Peppol

Starting with Peppol is simpler than you might think. Here are the steps to follow:

1. Choose an access point: choose a compliant Peppol solution adapted to your needs. Peppol Box offers a simple and affordable solution, ideal for SMEs
2. Register your business: provide your VAT number and business information
3. Configure your account: set up your invoice sending and receiving preferences
4. Test sending: perform a first test send to verify everything works correctly
5. Go live: start sending and receiving your invoices via Peppol

The entire process can be completed in a few minutes with Peppol Box, which offers an intuitive interface specifically designed for non-technical users. Additionally, Peppol Box offers CSV, XML and PDF exports, an API for automation, as well as integrations with existing tools. Thanks to Flexina Sync, your accountant automatically retrieves your invoices from Peppol Box — free of charge and with no effort on your part.

Frequently Asked Questions from Beginners

Does Peppol replace my accounting software?

No. Peppol is a transmission channel, not an accounting tool. It integrates with your existing solution or can be used independently via a web platform like Peppol Box.

How much does Peppol cost?

Costs vary by provider and invoice volume. Peppol Box offers plans adapted for SMEs. Additionally, the SME Packages Digital programme from the Ministry of the Economy can cover up to 70% of digitalisation costs.

Do my clients also need to be on Peppol?

To receive an invoice via Peppol, the recipient must be registered on the network. Public bodies are already registered. For your private clients, you can invite them to join the network or continue using other channels in parallel.