Keep your tools. We send invoices wherever you want.
Already using a retrieval platform? Perfect. Just give your client the email address and you're done.
Configure the import email address of your accounting software (Horus, WinAuditor, WinBooks, Exact Online, Sage BOB, Yuki, ClearFacts...). We automatically send in UBL XML or PDF.
Access the accountant space to view all your clients, download their sales and purchase invoices, filter by period and bulk export. Free and no installation required.
Total automation. Our desktop app (Windows/Mac) syncs invoices directly to your software folders. You set the frequency.
Your clients don't need to change anything, neither do you.
With the 2026 Peppol mandate, your clients are looking for reliable solutions. We offer software designed for them, with support included.
Your clients have a question? They call us directly. No ticket, no waiting, no extra charge. Support is included in their license. Your clients contact us directly in Belgium.
• Flexina Invoicing – Complete business management (quotes, orders, invoices, electronic signature, reminders, bank reconciliation, CRM, planning...)
• Peppol-Box – Simple and effective solution for freelancers and merchants who want to send and receive Peppol electronic invoices
• Peppol-Box Integration – For companies with an existing ERP or software: API, XML sending, PDF to XML conversion
Peppol-Box from €5/month. Peppol-Box Integration from €10/month. Flexina from €20/month. Fixed prices that don't change, including support, maintenance and updates.
20 years of invoicing experience, Peppol in place for 4 years for B2G in Belgium and Luxembourg, UBL XML export for 5 years. We master electronic invoicing.
Our team of experts is here to help you make your choice and answer all your questions about Flexina.
Manage your invoicing wherever you are
Belgian companies use Flexina every day to manage their quotes, invoices and business operations.
SECURITY, NETWORK & ELECTRICAL
"Always loyal to FLEXINA here in Belgium, 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 Belgian companies who want an all-in-one tool without any hassle."
LED Technology
"I have been using Flexina for 13 years in Belgium, 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."
Painting & Construction
"We have been using Flexina for 10 years to manage our painting business in Herstal, Belgium. It's an indispensable business management tool: quote tracking, deposit management, overdue payment reminders and invoicing. Simple and effective on a daily basis."
