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Understanding PEPPOL: E-Invoicing

Introduction

Peppol is the new default method to send e-invoices within the European Union (EU). It allows for a quick and faultless transmission of e-invoices between companies, using a single standard.

As of 2026, this is mandatory for companies in Belgium, and the rest of the EU will follow soon after.

The OutSmart Peppol power-up, allows for a quick and easy way to send your OutSmart invoices through the Peppol network.

Requirements

Before you can use the Peppol power-up, you need to have an active account on the Peppol network. OutSmart creates an account for you when you accept our terms of the power-up and click on Register in the power-up settings.

Your customers also need to have an active Peppol account if they want to receive e-invoices through the Peppol network. Consult with your customers if you are unable to send them e-invoices through the Peppol network.

Purchasing the Peppol Power-up

Before you can use the Peppol power-up, you first need to purchase it.

Go to to License Manager by selecting the avatar in the top right corner and select License Manager

License manager overview


Then selecte Go to License Manager in the top right corner

License manager

 

Go to the Power-ups section and scroll down until you find the Peppol E-invoicing power-up. Select the power-up and make a choice on how many invoice packages you would like to purchase on a monthly basis. You can send 50 invoices per package per month.

Select the amount of packages needed

 

  1. Complete the purchasing process to enable the power-up.

After you have purchased the power-up, you can use the License Manager to keep track of the amount of e-invoices you have sent.

See how many E-invoices you have sent

Configuring the Peppol power-up

Configuring the power-up only takes a few steps, but it does require that your company information is correct and complete.

Company Information pre-requisites

In order to use the Peppol network, the following information needs to be available, correct, and validated. You can add or edit this information through the avatar in the top right and selecting Company details

Go to the company details

Here you can fill in all the information that is required. For sending e-invoices, you need to populate and validate

  • Company details

    • Company Name

    • Address

    • Zip code

    • City

    • Country

  • Chamber of Commerce Number

  • VAT Number

  • IBAN

  • BIC

When everything is filled in correctly, you need to validate the information. Either select “Business Verification” from the left hand menu, or scroll down to the Business Verification section.

Selecte Validate Address

Check and validate your address

When successful, the address is validated and you will get a green checkmark

Address validated

Do the same for every other information. When everything is validated, you can continue the configuration of the power-up.

Configuring Peppol power-up

To configure the Peppol power-up, go to Settings > Settings > Software Integrations and press Edit after the Peppol entry

Edit the Peppol settings

Connect with Peppol and activate the power-up

When you agree to the terms & conditions, you can start the Peppol registration. This is done with the information that is shown on the settings page and which comes directly from the company details page.

To start the registration, accept the terms and conditions by flipping the switch and press Start Peppol Registration

Check your information and register for Peppol

When the registration is successful, you will see the following message

Registration successful!

You are now also able to enable the integration by selecting Enabled in the left hand panel

Enable the Peppol power-up

Using the power-up

After activating the power-up, a series of fields have been added to every relation in OutSmart

  • Delivery method

  • Peppol address type

  • Peppol address

Additional field after activating the power-up

With the Delivery method, you can define how the customer will receive their invoices.

The Peppol address type defines the different address format options, there are a few options already present.

Peppol address type options

The Peppol address is based on the customer information. When all the relation details are filled in complete and correctly, including the Chamber of Commerce number, you can use the Smart Resolver to find the customer on the Peppol network and have the address filled in automatically. If the customer cannot be found, or the customer information is not complete, you need to ask your customer for their address code so that you can fill it in manually. Make sure to validate the address afterwards.

Found and validated

Now, save the customers and the next invoice that you send to the customer, will be send through the Peppol network!

Simply create an invoice like you would normally. When you try to send the invoice, your selected delivery method is already selected and you can send the invoice through the Peppol network

Send the invoice through Peppol

In the invoice log, you can verify that the invoice has been sent and the global state of the e-invoice on the Peppol network. Be advised that it can take up to several minutes before the state is updated.

Check the Global State

And that is all there is to it. You are now able to easily send your e-invoices through the secure Peppol network.

Considerations

Currently, there are some scenarios to take into consideration.

  • It is not possible to connect the Peppol power-up to multiple IBAN numbers