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2026 Legal Requirement: Peppol Electronic Invoicing in Belgium

Guaranteed mandatory compliance

From January 1, 2026, all Belgian companies must use Peppol electronic invoicing for their B2B transactions. Flexina guarantees you total compliance with this new legal obligation.

2026 Legal Obligation

Peppol electronic invoicing mandatory for all Belgian companies from January 2026.

Preparation Time

Start your transition now to be ready on time with Flexina.

Certified Solution

Flexina is already Peppol certified. Simple and fast transition guaranteed.

Why Choose Flexina for Your 2026 Peppol Compliance?

Proven and certified solution

Flexina is already Peppol certified and used by thousands of Belgian companies. We guarantee your total compliance for the 2026 obligation with a simple and proven solution.

Already Peppol Certified

Validated and certified solution. Total compliance guaranteed.

Thousands of Companies

Already adopted by thousands of Belgian companies. Proven and reliable solution.

Expert Support

Personalized assistance for your transition to Peppol invoicing.

Two Peppol Solutions Tailored to Your Specific Needs

Flexina Invoicing or Peppol Box

Flexina offers two Peppol certified solutions to precisely meet your needs: Flexina Invoicing (complete and scalable business management) or Peppol Box (Peppol send/receive only).

Flexina Invoicing

Complete and scalable business management solution: invoicing, quotes, clients, stock, accounting, planning + integrated Peppol.

Peppol Box

Specialized Peppol solution: only send OR receive electronic invoices via Peppol. Simple and focused : Peppol Box

Personalized Advice

Our experts analyze your specific needs and guide you to the Peppol solution best suited to your business.

FAQ: Peppol Electronic Invoicing Obligation Belgium 2026

From January 1, 2026, Peppol electronic invoicing becomes mandatory for all B2B transactions in Belgium.

Discover how Flexina guarantees your total compliance.

2026 Legal Obligation

When does Peppol electronic invoicing become mandatory in Belgium?
LEGAL OBLIGATION: From January 1, 2026, electronic invoicing via Peppol will be mandatory for all B2B (Business to Business) transactions in Belgium. Paper and PDF invoices will no longer be accepted for these exchanges.
Which companies are affected by the 2026 Peppol obligation?
All Belgian companies that issue invoices to other companies (B2B) are affected. Regardless of size: freelancers, SMEs, large companies - this obligation applies to everyone. If you invoice business clients, you must use Peppol from January 2026.
What happens if I don't comply with the Peppol obligation?
Without a Peppol solution, your B2B invoices will no longer comply with Belgian legislation. This can lead to administrative difficulties, payment delays, and problems with your clients. Prepare your transition now with Flexina to avoid these complications.
How much time do I have left to comply?
You have approximately 12 months before the obligation. Given the implementation, training, and testing timeframes, it's recommended to start your transition now. Flexina assists you for guaranteed compliance before 2026.

Flexina Solution

Why choose Flexina for my 2026 Peppol compliance?
Flexina is already Peppol certified and used by thousands of Belgian companies! Proven solution, guaranteed compliance, fast transition, and expert support included. We handle all the technical complexity for you.
How long does it take to implement Flexina?
Quick implementation: Your Peppol solution is operational in just a few days! Training included, personalized support, and complete assistance until your total compliance.
Can Flexina handle my current and future invoices?
Complete solution: Flexina manages your classic AND Peppol invoices in a single software. Progressive transition possible, data recovery, training included. Total continuity guaranteed for your business.
What's the cost of Peppol compliance with Flexina?
The cost of Flexina is a wise investment for your legal compliance! Free trial available - test our solution without commitment. Transparent pricing, no surprises.

Choosing between Flexina Invoicing and Peppol Box

What's the difference between Flexina Invoicing and Peppol Box?
Flexina Invoicing is a complete and scalable business management solution: invoicing, quotes, clients, stock, accounting, planning with integrated Peppol. Peppol Box specializes only in sending OR receiving electronic invoices via Peppol.
When should I choose Peppol Box over Flexina Invoicing?
Choose Peppol Box if you only need to receive Peppol invoices from your suppliers OR send Peppol invoices to your business clients, without needing complete business management. It's the targeted and economical solution for Peppol compliance.
Can Peppol Box do both: send AND receive?
Peppol Box is designed for specific needs: either only sending or only receiving Peppol invoices. If you need both functions plus complete business management, Flexina Invoicing will be more suitable.
Which solution for a company that wants to manage everything?
For complete and scalable business management (invoicing, quotes, clients, stock, planning, accounting) with integrated Peppol, choose Flexina Invoicing. It's the all-in-one solution that grows with your company.

Technical Questions

What exactly is the Peppol network?
Peppol is the standardized European network for secure exchange of structured electronic invoices. It replaces paper and PDF invoices with digital documents compliant with Belgian and European legal standards.
Can we still send PDF invoices after 2026?
From January 2026, PDF invoices will no longer be compliant for B2B transactions in Belgium. Only structured electronic invoices via Peppol will be legally accepted. Flexina automatically converts your invoices to the right format.
How will my clients receive my Peppol invoices?
Your clients will receive your invoices directly in their accounting software or via their Peppol solution. No more emails, no more paper: instant and secure transmission. Flexina handles all the technical complexity for you.

Have a specific question?

Our team of experts is here to help you make your choice and answer all your questions about Flexina.

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Customer testimonials

For over 15 years, we have been offering quality professional service in about ten countries

TWOSEVEN SRL

SECURITY, NETWORK & ELECTRICAL

"Always loyal to FLEXINA, a real pleasure and a very efficient tool on a daily basis. We had tried many different invoicing software and none of them offered such flexibility in settings and customizations. A must have for all freelancers and companies who want an all-in-one tool without any hassle."
Lionel Delsart

Led Tech Pro

LED Technology

"I have been using Flexina for 13 years, it's an excellent invoicing software that is complete (quotes, purchase orders, delivery notes, invoices...). It is easy to use, with its app and Cloud, it allows access to documents from anywhere and with any device."
Ugo Genestout

IMPRIMERIE IXTHUS

Printing

"I find that Flexina is a company that fights hard to satisfy us, with an excellent team behind it, available, attentive, and especially responsive! I use Flexina every day, even on weekends, and it works perfectly! 100% recommended."
Guillaume LEDUC

SCHALLER

Services

"Since I started using Flexina, my life has changed. Everything is easier, they update very regularly. They always answer the phone, they are really super responsive! Thank you"
Albane SCHALLER

PASTITALIA

Restaurant

"I was looking for an online program, I found flexina which solved all my problems, simple and fast and support always available, I highly recommend it in Switzerland."
Sergio Scalirò

SERRURERIE LAMARCK

Locksmith

"We have been using Flexina to create our invoices and quotes for several years now, it's a really complete and easy to use invoicing software. We are very satisfied with the service and human contact with Flexina team members."
Guillaume LEDUC

OPTIBELUX

Optics

"I have been using Flexina since 2016, the software is super simple and very practical. Best wishes to the whole team."
Jonathan Flasschoen

Casa&Co

Decoration

"We have been using Flexina for years. Very easy to use and handle. We recommend it."
CENGIZ GURSOY

ECHO-VERT PYRENEES OCEAN

Environment

"Flexina, top software adapted to SMEs on computer as well as smartphone. Simple software meets business needs"
Katia Goursaud