This article answers frequently asked questions about how Peppol works within Equicty Equstable and what it means for e-invoicing. Here, you’ll learn everything about registration, sending and receiving e-invoices, and how this aligns with Belgian and European regulations.

Important:
E-invoicing will become mandatory across all European countries by 2030.
For Belgium, the legal deadline is January 1, 2026.
With Equicty Equstable, you are already fully prepared to comply with this legislation.

Table of Contents

• General
• Registering on Peppol
• Sending e-invoices
• Receiving e-invoices
• Accounting and UBL Files
• Deactivating or switching company entities

General

What does e-invoicing mean?

E-invoicing (or electronic invoicing) means that invoices are exchanged in a structured electronic format (UBL) via a certified network such as Peppol. This enables companies to automatically process invoices without manual intervention.

Is e-invoicing mandatory?

Yes, step by step.

• Today: mandatory for B2G (business to government).

• From January 1, 2026: also mandatory for B2B in Belgium.

• By 2030: mandatory throughout the EU.

With Equstable, you can already work safely and fully compliant with the upcoming regulations.

Do Belgian companies have to use Peppol for foreign clients?

No, only for invoices between Belgian businesses (B2B).
Invoices sent to foreign clients (such as France, Germany, or the Netherlands) can still be sent via email. Optionally, you can also send invoices via Peppol to Dutch or Luxembourgish companies if they are registered on the network.

And what if I only have B2C clients (private individuals)?

Then you are not required to send e-invoices via Peppol, but you must still be able to receive e-invoices from suppliers who use Peppol. Invoices to private clients may still be sent as PDF or via email.

Are there extra costs associated with e-invoicing in Equstable?

No. E-invoicing via Peppol is part of the legal requirements and is included in Equicty Equstable
at no additional cost for all users with the invoicing module.

Registering on Peppol

What does registration on Peppol mean?

Registering on Peppol means that your company is officially connected to the Peppol network through Equicty Equstable. You receive a unique Peppol ID, which allows you to send and receive e-invoices.

Read more: [HOWTO Enable Peppol in Equicty Equstable]

How can my clients or suppliers see that I’m registered?

Your company can be found via your KBO number (for Belgium) or VAT number. Suppliers can verify this using official websites such as peppolcheck.be.

Can I be connected to Peppol with multiple tools?

You can send invoices via multiple tools, but you can only receive e-invoices in one tool.
That means:

• Sending via Equstable and another tool is possible.

• Receiving is only possible in the tool where your company is registered (e.g., Equstable).

What if my company is already registered on Peppol through another tool?

In that case, Equstable can only send invoices via Peppol, not receive them.
However, you will still be fully compliant for all outgoing e-invoices.

Sending e-invoices

Can I send an invoice via Peppol and receive it elsewhere?

Yes, that’s possible.
Sending and receiving are separate processes within the Peppol network.

What if I discover an error after sending an invoice via Peppol?

Once an invoice has been sent via Peppol, it cannot be resent with the same invoice number.
You must create a credit note, correct the mistake, and resend the corrected invoice via Peppol.

What if I want to send a payment reminder?

Reminders are not sent through Peppol. You can send an email stating that the original invoice has already been sent via Peppol, and attach the PDF copy of the original invoice.

Can invoices to governments also be sent via Peppol (B2G)?

Yes.
Invoices to Belgian, Dutch, and Luxembourgish public authorities are sent via Peppol.
Equstable automatically recognizes these institutions so you don’t have to upload invoices manually.

Receiving e-invoices

Do I need to enable Peppol to receive e-invoices?

Yes.
If your Belgian suppliers send invoices through Peppol, you must be registered in Equstable to receive them.

Read more: [HOWTO Receive e-invoices via Peppol in Equicty Equstable]

Can I link incoming invoices to existing expenses or tasks?

Not yet, but this feature is on the Equstable roadmap and will be available in a future update.

Can I pay incoming invoices directly in Equstable?

Not yet, but this will also be added in a future release.
For now, you can track payments via your bank and manually mark invoices as paid in Equstable.

Accounting and UBL Files

Can I send my outgoing Peppol invoices to my accountant?

Yes.
Equstable allows you to automatically send a copy of your invoices to your accountant’s email address or auto-scan service.

Read more: [HOWTO Set up an accounting email integration]

Can I automatically send incoming invoices to my accounting software?

Not yet.
You can manually download incoming invoices as UBL/XML or PDF and forward them to your accounting system.

Deactivating or switching company entities

What happens if I delete or archive a company entity?

The associated VAT and KBO numbers are deregistered from Peppol.
You will no longer be able to send or receive e-invoices through that account.

What happens if I stop using Equicty Equstable?

When you cancel your Equstable subscription, your Peppol registration will be deactivated.
You can then re-register through another certified Peppol provider.