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Orientation guide: find the Peppol solution that fits your needs in Belgium

Peppol Box or Flexina Invoicing? Two 100% Belgian Peppol solutions, compliant and designed for different needs

Comparison Peppol Box vs Flexina Invoicing: which Peppol electronic invoicing solution to choose in Belgium
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PEPPOL OBLIGATION 2026: Since January 2026, all Belgian businesses must use Peppol electronic invoicing for B2B. Peppol Box from 5 €/month or Flexina Invoicing at 19.99 €/month — choose the solution that fits your needs!

Peppol Box: The Simple and Affordable Solution to Send and Receive Peppol Invoices in Belgium

For self-employed and small businesses
Peppol Box is the Peppol electronic invoicing solution with the best value for money in Belgium. Designed for part-time self-employed, freelancers and retailers who need a simple and affordable solution to send and receive Peppol electronic invoices from just 5 €/month, without the advanced features of a full business management software.

Sending and receiving Peppol invoices

With Peppol Box, create and send your compliant electronic invoices via the Peppol network in just a few clicks. Receive invoices from your suppliers directly in your Peppol Box workspace. Each received invoice generates an email notification and an automatic PDF preview, even if the supplier did not attach a PDF to their invoice. Peppol Box supports B2B invoices via Peppol and B2C invoices sent by PDF to individuals.

Set up in 5 minutes, trial at 5 € for 5 days

Peppol Box is operational in just minutes: sign up, activate your Peppol number and send your first invoice in record time. The Peppol Box trial costs only 5 € for 5 days with immediate Peppol registration. No commitment, no automatic renewal. You remain free at the end of each period. Setup in 5 minutes, 100% Belgian service.

100% compliant with Peppol BIS 3.0

Peppol Box is fully compliant with the Belgian Peppol electronic invoicing obligation in effect since January 2026. All your invoices comply with Peppol BIS 3.0 standards and the European standard EN16931. Peppol Box is a fully Peppol-compatible solution, guaranteeing full compliance of your B2B exchanges in Belgium and internationally.

Free accounting export for your accountant

With Peppol Box, your accountant retrieves your sales and purchase invoices for free. Export compatible with all Belgian accounting software: Sage BOB, WinBooks, Win Auditor, Horus, and others. Multiple transmission methods: download link, dedicated accountant workspace, automatic email or Flexina Sync (direct download to the accountant's computer). Peppol UBL XML or PDF format of your choice.

Flexina Invoicing: The Complete Solution to Manage Your Business with Built-in Peppol

For SMEs and growing businesses
Flexina Invoicing is a complete business management software at 19.99 €/month with natively integrated Peppol. Ideal for SMEs, tradespeople and businesses that need invoicing, quotes, CRM, scheduling, purchase management, bank reconciliation, electronic signature and much more. Everything in one tool, with Belgian support included.

Built-in CRM and client tracking

Unlike Peppol Box, Flexina Invoicing includes a full CRM: detailed client profiles, sales pipeline, opportunities, tasks and notes. Revenue tracking and real-time sales statistics.

Automatic bank reconciliation

Connect your bank via Ponto and automatically match payments with your invoices. Real-time tracking of unpaid invoices and automatic reminders. Included in the base price, not available in Peppol Box.

Team scheduling and interventions

Schedule your teams, appointments and interventions directly linked to your quotes and invoices. Dedicated mobile app to view schedules remotely. Optional module at +5 €/resource/month.

Purchase management with Peppol reception and advanced OCR

The Purchases module (+10 €/month) includes Peppol supplier invoice reception, OCR/AI scanning with automatic recognition, purchase bank reconciliation and accounting export. Peppol Box offers basic OCR via Flexina Scan, but without bank reconciliation.

Detailed Comparison Table: Peppol Box vs Flexina Invoicing in Belgium

Find the Peppol solution that suits you
Both solutions are 100% compliant with Peppol BIS 3.0 and meet the Belgian legal obligation for electronic invoicing in effect since January 2026. The difference lies in the functional scope: Peppol Box from 5 €/month for essential Peppol invoicing, Flexina Invoicing at 19.99 €/month for complete business management with built-in Peppol.

FeaturePeppol Box
from 5 €/month		Flexina Invoicing
19.99 €/month
Send Peppol invoices (B2B)✓✓
Receive Peppol invoices✓+10 €/month
B2C invoicing (PDF by email)✓✓
Payment QR code✓✓
OCR / AI scan (receipts and invoices)✓✓
Free accounting export✓✓
Mobile app✓✓
Built-in Peppol directory✓✓
REST API / ERP integration✓✗
Belgian support included✓✓
Flexina Invoicing exclusive features
Professional quotes+5 €/month✓ included
CRM and client tracking✗✓ included
Bank reconciliation✗✓ included
Purchase orders / delivery notes✗+5 €/month
Team scheduling✗+5 €/resource
Electronic signature✗+5 €/month
Recurring invoices✗+5 €/month
Purchases: Peppol reception + OCR + reconciliation✗+10 €/month
Multi-users with access rights+5 €/user+5 €/user
Thousands of Belgian businesses trust our Peppol solutions

Who Uses Peppol Box and Flexina Invoicing? Real-World Cases in Belgium

Since the Peppol electronic invoicing obligation in January 2026, thousands of self-employed, SMEs and accountants in Belgium have chosen Peppol Box or Flexina Invoicing to become compliant. Here are typical profiles to help you identify the right solution for your business.

Part-time self-employed — graphic designer in Wallonia

A freelance graphic designer invoices 5 to 10 clients per month as a part-time self-employed worker. No need for CRM, scheduling or purchase management — just sending and receiving Peppol invoices. Peppol Box on the Starter plan at 10 €/month is the ideal solution: compliant with the Belgian Peppol obligation, operational in 5 minutes, and the accountant retrieves everything for free via Flexina Sync.

Technical services SME — 15 employees in the Liège area

A technical services company with 15 employees, an intervention schedule and significant supplier purchases. Flexina Invoicing at 19.99 €/month with the Purchases module (+10 €/month) and Scheduling (+5 €/resource/month) centralises everything in one tool: quotes, invoicing, team scheduling, bank reconciliation and built-in Peppol. Technicians check the schedule on their phones via the mobile app.

Accounting firm — over 100 client files in Brussels

An accounting firm managing over 100 client files of all sizes. Since the 2026 Peppol obligation, the firm directs its self-employed and micro-business clients to Peppol Box, and its SME clients to Flexina Invoicing. The firm retrieves all sales and purchase invoices for free via Flexina Sync — automatic retrieval into accounting software, compatible with Sage BOB, WinBooks, Horus. No cost for the firm.

Restaurant — B2B and B2C with Peppol Box in Flanders

A restaurant with 3 employees invoices its professional clients (caterers, businesses) B2B via Peppol and individuals B2C via standard PDF. Peppol Box on the Standard plan at 15 €/month handles both: B2B invoices automatically on Peppol, B2C invoices sent as PDF by email. Payment QR codes on each invoice speed up collections. A simple and affordable solution for the hospitality sector.

Specialists in invoicing and business management since 2008. Sending invoices via Peppol since 2021, sending and receiving since 2022. 100% Belgian service and support.

FAQ: Peppol Box vs Flexina Invoicing — All Your Questions About Peppol Invoicing in Belgium

All the answers to help you choose between Peppol Box and Flexina Invoicing.

Pricing, features, compliance, migration — find the Peppol solution that fits your situation in Belgium.

Choosing between Peppol Box and Flexina Invoicing

What is the main difference between Peppol Box and Flexina Invoicing?
Peppol Box is a simple and affordable Peppol electronic invoicing solution from 5 €/month: send and receive invoices via the Peppol network, compliant with the Belgian 2026 obligation. Flexina Invoicing is a complete business management software at 19.99 €/month with natively integrated Peppol (quotes, invoices, CRM, scheduling, purchases with OCR, bank reconciliation, electronic signatures). Both solutions are 100% Peppol BIS 3.0 compliant and offered by the same Belgian publisher, active since 2008. The choice depends solely on your needs: simple Peppol invoicing with Peppol Box, or complete management with Flexina Invoicing.
I'm part-time self-employed, which Peppol solution suits me?
If you invoice a few clients per month and don't need CRM, scheduling or purchase management, Peppol Box is the ideal solution for you. The Micro plan at 5 €/month covers 100 documents per year, more than enough for a part-time self-employed worker. The Starter plan at 10 €/month goes up to 300 documents/year if your activity grows. Setup in 5 minutes, no commitment, no automatic renewal. Peppol Box makes you compliant with the Belgian Peppol 2026 obligation at the best price on the market.
I have an SME with employees and stock, what should I choose?
Flexina Invoicing at 19.99 €/month is made for SMEs. You get complete business management: professional quotes, invoices, CRM and client tracking, team scheduling (+5 €/resource/month), purchase management with intelligent OCR (+10 €/month), automatic bank reconciliation, and natively integrated Peppol. Everything in one tool instead of juggling multiple software. Free 15-day trial without credit card.
Can I switch from Peppol Box to Flexina Invoicing later?
Yes, at any time. Migration from Peppol Box to Flexina Invoicing is simple and your data (clients, invoices, Peppol number) is preserved. Both solutions are published by Flexina and share the same infrastructure. You can start with Peppol Box from 5 €/month for the essentials and upgrade to Flexina Invoicing at 19.99 €/month when your management needs grow. Belgian support assists you through the transition.
I'm an accountant, which solution should I recommend to my clients?
As an accountant, you can direct your clients to the solution suited to their profile: Peppol Box for self-employed workers and micro-businesses who only need Peppol invoicing (from 5 €/month), and Flexina Invoicing for SMEs who need complete business management (19.99 €/month). In both cases, you retrieve all your clients' invoices for free via Flexina Accounting — Flexina Sync, automatic email or dedicated accountant portal. Export compatible with Sage BOB, WinBooks, Horus and all Belgian accounting software. No cost for you.

Pricing and trials

How much does Peppol Box cost exactly? What are all the pricing plans?
Peppol Box pricing for annual payment (excl. VAT) for sending and receiving Peppol invoices: Micro at 5 €/month (100 docs/year), Starter at 10 €/month (300 docs/year), Standard at 15 €/month (600 docs/year, most popular), Pro at 25 €/month (1,200 docs/year), Business at 35 €/month (2,400 docs/year), Business Pro at 50 €/month (3,600 docs/year). Quarterly payment is also available at slightly higher rates (e.g. Standard at 19 €/month). Receive-only plans are available from 5 €/month. Beyond 3,600 documents/year, a custom offer is possible.
How much does Flexina Invoicing cost with all modules?
Flexina Invoicing costs 19.99 €/month for the full version including: client management, mini-CRM, products, quotes, invoices, payment tracking, Peppol send/receive, bank reconciliation, mobile app, email and phone support. Optional modules are: Purchase invoices +10 €/month, Electronic signatures +5 €/month, Orders/Deliveries +5 €/month, Multi-users +5 €/user/month, Scheduling +5 €/resource/month, Recurring invoicing +5 €/month. You only pay for what you use — see all pricing.
Is there a free trial for Peppol Box?
Peppol Box offers a 5 € trial for 5 days with immediate Peppol registration. It's not free, but this token fee covers the registration of your Peppol number on the network, which is active immediately. During these 5 days, you can test all Peppol Box features: sending invoices, receiving, OCR scanning, accounting export. No automatic renewal — at the end of the trial period, you freely choose whether to continue or not. For Flexina Invoicing, the trial is free for 15 days without credit card.
Is there a free trial for Flexina Invoicing?
Yes, Flexina Invoicing offers a free 15-day trial with no commitment and no credit card. During these 15 days, you have access to all features: client management, quotes, invoices, Peppol, bank reconciliation, mobile app. At the end of the trial, you freely choose to continue at 19.99 €/month or opt for Peppol Box if you only need Peppol invoicing.
What happens if I exceed my Peppol Box document quota?
Peppol Box applies a fair overage policy: if you exceed your annual quota by less than 15%, it's entirely free. Beyond 15% overage, you only pay the actual difference at the next tier's rate — no hidden fees, no penalties. The system warns you when you approach your limit. It's one of the most transparent policies on the Belgian Peppol invoicing market.

Compliance, support and availability

Are both solutions compliant with the 2026 Peppol obligation in Belgium?
Yes, absolutely. Peppol Box and Flexina Invoicing are both 100% compliant with the Belgian Peppol electronic invoicing obligation in force since 1 January 2026. Both solutions are fully Peppol-compatible, compliant with Peppol BIS 3.0 standards and the European standard EN16931. Both allow you to send and receive invoices via the Peppol network. Whether you choose Peppol Box from 5 €/month or Flexina Invoicing at 19.99 €/month, you are in full compliance.
Does the Peppol obligation also apply to micro-businesses and part-time self-employed workers?
Yes. Since January 2026, the Peppol electronic invoicing obligation applies to all Belgian VAT-registered businesses for B2B transactions, including micro-businesses, part-time self-employed workers and starters. That's why Peppol Box offers a Micro plan at just 5 €/month for 100 documents per year — specially designed for small volumes. B2C invoices (to individuals) are not affected by the Peppol obligation.
Can my accountant access both solutions for free?
With Flexina Invoicing, your accountant gets free access via Flexina Accounting to view and export all your sales and purchase data. With Peppol Box, your accountant retrieves your invoices for free via Flexina Sync (direct download to their computer), automatic email, dedicated accountant portal or download link. In both cases, accountant access is 100% free, compatible with Sage BOB, WinBooks, Horus and all Belgian accounting software.
Do Belgian tax benefits apply to both Peppol solutions?
Yes. Belgian tax deductions for digitalisation apply to both Peppol Box and Flexina Invoicing: 20% investment deduction and 120% cost deduction on your electronic invoicing software expenses. These measures have been extended until 2027 to encourage the digital transition of Belgian businesses. Consult your accountant for the details of your specific situation.
How do I migrate from Peppol Box to Flexina Invoicing?
Migration from Peppol Box to Flexina Invoicing is simple and without interruption. Your client data, invoice history and Peppol number are automatically transferred since both solutions share the same Flexina infrastructure. You keep your existing Peppol identifier. Belgian support assists you through the transition. You can start with Peppol Box from 5 €/month and upgrade to Flexina Invoicing at 19.99 €/month when your needs grow, without losing any data.
Is Peppol Box available outside Belgium?
Yes, Peppol Box is available in Belgium, Luxembourg, the Netherlands and Germany. The website is available in 4 languages (French, Dutch, English, German) and the Peppol Box software is translated into 12 languages to suit international businesses. Peppol Box also allows sending and receiving international Peppol invoices to all countries connected to the Peppol network: France, Italy, Scandinavian countries, and many more. Flexina Invoicing is available in the same countries, with an interface in 3 languages (French, Dutch, English).

Have a specific question?

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