The complete Belgian invoicing & management software — Peppol included.

Yes. Since January 1, 2026, all VAT-registered businesses in Belgium must be able to send and receive electronic invoices via the Peppol network for B2B transactions.

Peppol electronic invoicing has been mandatory in Belgium since January 1, 2026. This applies to all B2B invoices between VAT-registered Belgian businesses.

Yes. Flexina natively integrates Peppol electronic invoicing for both sending and receiving. You can send Peppol invoices directly from Flexina and receive your suppliers' invoices.

Yes. Flexina is designed for freelancers, small businesses and SMEs in Belgium. It covers invoicing, quotes, CRM, planning, electronic signatures and Peppol invoicing in one solution.

Yes. With Flexina Sync, your accountant can automatically retrieve your sales and purchase invoices in their accounting software. Export is available in UBL and PDF format.

An invoicing software, also called a quote and invoice program or business management tool, is a digital solution that simplifies business administrative management. Flexina goes beyond simple invoicing by offering a complete suite including management of quotes, invoices, purchase orders, delivery notes and purchases. This all-in-one solution efficiently manages the entire commercial cycle, from supplier orders to customer invoicing, including inventory management and electronic signature of quotes.

Invoicing software features have evolved significantly in recent years. Today, Flexina offers you much more than a simple tool for creating invoices:

• Paperwork becomes child's play: No more administrative headaches! In just a few clicks, your quotes transform into orders then into invoices. You save tremendous time and avoid re-entry errors.
• Everything is connected, everything is simple: Imagine having all your activity in one place: your sales, purchases, schedules... No need to juggle between different software, everything is there at hand.
• Your daily assistant: Flexina watches over your business: it reminds you of invoices to follow up, stock to order, and alerts you when an opportunity arises. It's like having an extra collaborator!
• More informed decisions: At a glance, you know where your sales stand, who your best customers are, and which products are flying off the shelves. No need to be an Excel expert to understand your activity.

In short, Flexina takes care of all the administrative part so you can focus on what matters: growing your business.

Management software like Flexina perfectly adapts to all business sizes, offering tailored features for each situation:

For self-employed entrepreneurs:

• Daily simplicity: Create your quotes and invoices in just a few clicks with ready-to-use templates

For VSEs / SMEs:

• Complete management: Manage your entire activity (purchases, sales, inventory, cash flow) from a single interface
• Facilitated growth: Evolve peacefully thanks to modules adapted to your needs (multi-user, multi-company discounts)

Flexina evolves with you: start with the essential features for your activity, then activate new modules as you grow. It's the assurance of a solution that adapts to your needs, without ever holding you back.

Beware of so-called free invoicing solutions! In reality, they often hide important limitations that can hinder your activity: blocked features, limited number of invoices, or worse, dependence on a system that risks wasting your time and money.

At Flexina, we made a different choice: to offer a fair and transparent price, unchanged for many years. For a reasonable investment, you benefit from:

• A complete solution without feature restrictions
• Personalized support for your success
• Regular updates at no extra cost

With the best value for money on the market, Flexina is a profitable investment that sustainably accompanies your company's growth. Why risk your company's future with a free solution when you can have a professional tool for a few euros per month?

Customer satisfaction also involves modernizing your tools! Flexina radically transforms your customers' experience by simplifying each step:

No more back-and-forth with documents: your customers sign their quotes directly online. No need to print, scan or mail. A simple click is enough to validate an order.

Payment becomes as simple as online shopping: your customers instantly pay their invoices via a secure interface. Result? Your sales close faster and your cash flow improves.

This digital fluidity gives your company a modern image and sets you apart from the competition. Your customers appreciate this time saving and simplicity that make their lives easier.

Using a quote and invoice program to have your customer quotes signed offers many advantages. Here's why it can transform your sales process:

• Time saving: With a quote and invoice program, you can create, send and have your quotes signed in just a few clicks. No need to print, scan or send documents by mail. Everything is done online, which significantly speeds up the process.
• Professionalism: An electronically signed quote gives a modern and professional image of your company. Your customers will appreciate the simplicity and speed of the process, which can improve their satisfaction.
• Security and compliance: Electronic signatures are secure and legally recognized. They guarantee the authenticity and integrity of documents, reducing the risks of fraud and disputes.
• Real-time tracking: You can track the status of your quotes in real time, know when they have been opened, signed or refused. This allows you to react quickly and improve your conversion rate.
• Process automation: Once the quote is signed, the program can automatically generate the corresponding invoice, send notifications and update your management systems. This reduces manual tasks and the risk of errors.

Flexina offers a complete quote and invoice solution with integrated electronic signature. Thanks to Flexina, you can simplify and accelerate your sales processes while offering an optimal customer experience.

An EPC QR code (European Payments Council) or SEPA payment QR code is a standardized 2D barcode that revolutionizes payments in Europe.

Present on invoices, this bank transfer QR code encodes all the information necessary for payment:

• Beneficiary's IBAN
• Amount to pay
• Invoice reference
• Beneficiary details

This QR code to pay allows customers to settle their invoices instantly via their mobile banking app by simply scanning the code, thus eliminating manual entry errors.

The QR codes for invoice are automatically generated by modern invoicing software according to SEPA standards, facilitating:

• Cross-border payments
• Automatic bank reconciliation
• Simplified management of incoming payments

This digital payment solution considerably simplifies the payment process while ensuring the reliability of transmitted data.

The display of SEPA payment QR Code on invoices and quotes optimizes the collection of deposits and payments. The system works as follows:

• For standard invoices: the QR code automatically encodes the total amount to pay
• For deposit requests: the QR code contains only the requested deposit amount
• For signed quotes: possibility to include a QR code for deposit payment

The advantages of this feature:

• Facilitated deposit payment by customers
• Reduction of bank details entry errors
• Faster collection of deposit requests
• Automated tracking of received payments

This digital payment solution integrates perfectly into the invoicing and deposit management process, significantly improving cash flow tracking.

Converting a PDF invoice to a Peppol electronic invoice may seem simple, but it requires special attention to ensure compliance with the standards and formats required by the Peppol network. Here are the general steps:

1. Using OCR and AI: While tools like OCR (Optical Character Recognition) and AI can extract data from a PDF file, it is often necessary to manually re-enter all necessary information (invoice number, date, amount, lines, totals, etc.) to map them correctly to the electronic format.
2. Choose compatible software: Use invoicing software that natively supports the Peppol format. This will save you many intermediate steps and ensure smooth and compliant conversion.
3. Take advantage of the obligation in Belgium: With the electronic invoicing obligation in Belgium, it's the perfect time to adopt software that natively handles the generation of Peppol electronic invoices. This not only simplifies the process but also ensures legal compliance.

Flexina facilitates this process by natively integrating Peppol compatibility, allowing you to generate compliant electronic invoices quickly and efficiently.

With electronic invoicing, sending your invoices to your accounting software becomes much simpler and more efficient. Here's how to proceed:

• Using electronic invoicing: Most modern accounting software is already compatible with importing invoices in electronic format. This means you can send your invoices directly from your invoicing software to your accounting software without having to manually re-enter information.
• Process automation: Electronic invoices are automatically imported into your accounting software, reducing the risk of errors and saving you valuable time.
• Contact your accountant: To ensure everything is properly configured and you're using best practices, don't hesitate to contact your accountant. They can guide you and help you optimize your invoicing and accounting processes.

Flexina offers an electronic invoicing solution that integrates perfectly with major accounting software. Thanks to Flexina, you can send your invoices directly to your accounting software smoothly and effortlessly, while benefiting from automation and data accuracy.

Using planning integrated with your invoicing and business management software offers many advantages for optimizing your business management. Here are some reasons why this is beneficial:

• Information centralization: With integrated planning, all your management information (appointments, tasks, invoices, quotes) is centralized in one place. This gives you a clear overview and allows you to manage your activity more efficiently.
• Time saving: You no longer need to juggle between multiple tools or applications. Everything is accessible from a single interface, saving you valuable time.
• Better organization: Integrated planning helps you better organize your days and those of your collaborators. You can plan appointments, deliveries, and tasks to be completed, while having visibility on everyone's availability.
• Project tracking: You can track the progress of your projects in real time, from quote creation to final invoicing. This allows you to better anticipate needs and ensure optimal customer follow-up.
• Error reduction: By automating certain administrative tasks, such as generating invoices from scheduled appointments, you reduce the risk of errors and ensure better accuracy in your documents.

Flexina offers planning integrated with its invoicing and business management solution, allowing you to benefit from all these advantages for smoother and more efficient management of your business.