Self-billing (self-invoicing) via Peppol fully automates supplier flows. With Flexina, receiving self-billing invoices is included in purchase management. A new module also allows you to issue invoices on behalf of your suppliers.
Verification of Payee (VoP) becomes mandatory in October 2025. With Flexina, your invoices and SEPA QR codes are already compliant: beneficiary name and IBAN automatically synchronized.
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Maximize tax benefits with Peppol electronic invoicing in Belgium. The 120% tax deduction is extended until 2027. Learn about deductions and compliance requirements.
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Complete guide on retention guarantees in Belgium and Luxembourg. Legal requirements and management with Flexina.
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Electronic invoicing is now mandatory in Belgium since January 2026. Requirements and compliance guide for businesses.
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Important update on reverse charge mentions for 2023. Compliance requirements and implementation guide.
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Belgium requires new mentions for 6% reduced VAT rate. Learn about compliance requirements and implementation.
Read moreManage 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."
