PEPPOL in Belgium becomes mandatory from 1 January 2026: What every entrepreneur needs to know

If you have a business in Belgium or work as a self-employed person, there is a major change that directly affects you:

From 1 January 2026, electronic invoicing through PEPPOL becomes mandatory for B2B transactions.

It is not optional. It is not "for later".

If you do not adapt in time, you risk:

• fines
• tax issues
• payment delays

In this article, we explain simply:

• What PEPPOL is
• Who is required to use it
• What you need to do concretely
• Easy-to-understand examples

What is PEPPOL (explained simply)

PEPPOL stands for Pan-European Public Procurement Online and is a standardised system for sending electronic invoices.

In practice: you no longer send PDF invoices by email.

Invoices are sent automatically, digitally, directly between accounting systems.

How it works

1. You create the invoice in your software
2. You send it through the PEPPOL network
3. The client receives it automatically in their system

No email. No PDF. No manual errors.

What changes from 1 January 2026 in Belgium

Starting from this date:

Structured electronic invoicing becomes mandatory for B2B transactions.

This means:

• between companies (Ltd, SA, self-employed, etc.)
• NOT for private individuals (B2C)

In short:

• Have a company in Belgium? → you are required
• Issue invoices to other companies? → you need PEPPOL
• Work only with private individuals? → NOT (yet)

Who is required to use PEPPOL

• Self-employed (zelfstandige)
• Limited companies (BV)
• Public limited companies (NV)
• Any company registered in Belgium

Regardless of the size of the business.

It does not matter if:

• you are just starting
• you have low income
• you work part-time

If you issue B2B invoices → you must use PEPPOL.

What is NO longer accepted

After 1 January 2026:

• Invoices sent only by email (PDF) – NO
• Invoices in Word / Excel – NO
• "Manual" invoices without a digital system – NO

These will no longer be considered compliant for B2B.

Concrete examples

Example 1 – Self-employed

You are a plumber working for a construction company.

Before: you sent a PDF invoice by email.

After 1 January 2026: you must send the invoice through PEPPOL.

Example 2 – Small business

You have a cleaning company and invoice other companies.

All invoices must be created digitally and sent through PEPPOL.

Example 3 – Freelancer

You are a graphic designer with company clients.

Even if you work alone, you are required to use PEPPOL.

What you need to do concretely

1. Check if your software supports PEPPOL

Most modern accounting software already includes electronic invoicing and PEPPOL integration. If not, it needs to be changed.

2. Activate a PEPPOL access point

To send invoices, you need an "access point" (authorised intermediary). Usually, this is included in the accounting software.

3. Configure your company data

You need to have:

• valid VAT number
• correct company details
• PEPPOL identifier

4. Test before the deadline

Do not wait until 1 January 2026.

Recommendation: start using the system 2-3 months in advance. Avoid stress and mistakes.

What you risk if you do not comply

If you do not implement PEPPOL:

• invoices may be considered invalid
• problems with VAT deductions
• payment delays
• possible sanctions

In practice: you block your cash flow.

Understand better how VAT works in Belgium: VAT in Belgium (BTW) explained simply

Why Belgium is introducing this rule

The Belgian state wants:

• less VAT fraud
• transparency
• digitalisation
• easier controls

Everything becomes automatic and tracked in real time.

Advantages for you

Although it seems complicated, there are also benefits:

• fewer errors
• faster payments
• simplified accounting
• less time wasted

PEPPOL vs classic invoices

What you need to remember (quick summary)

From 1 January 2026:

• Electronic invoicing becomes mandatory for B2B
• You must use compatible software
• You must send invoices through PEPPOL
• If not, you risk tax and financial problems

Conclusion

PEPPOL is not just a technical change.

It is a major shift in how business works in Belgium.

If you are an entrepreneur or self-employed: start preparing now. Do not wait until the last moment.

Read our other guides

• Taxes as self-employed in Belgium 2026
• VAT in Belgium (BTW) – complete guide
• Checklist: first 30 days as self-employed
• How to do your own marketing
• 12-month marketing plan