Belgium is taking a firm step towards a more transparent digital economy, being in line with the broader EU tax-digitisation efforts. The country has officially passed legislation mandating the use of structured electronic invoices for nearly all transactions between
Belgian enterprises liable to register for VAT. This mandate is to be implemented from 1 January 2026. There is, however, no obligation to issue electronic invoice for B2C transactions, as yet. If you do business in Belgium, and you are not an exempted entity, it’s time to align your operations with the new Belgium e-invoicing mandate.
But what does this really mean for businesses? Are you subject to said mandate? How will Peppol change your current invoicing processes? And what steps should you take now to prepare?
Here’s everything you need to know about the upcoming Belgium e-invoicing mandate and how to stay ahead of the curve.
As of March 2024, Belgium has approved a bill that enforces an electronic invoicing mandate on B2G transactions and will enforce mandatory e-invoicing for all domestic B2B transactions from 2026, using the Peppol network as its foundation. The transition is part of Belgium’s broader digital strategy, known as Digital Belgium BE E-Invoicing, which aims to modernise invoice submissions and tax reporting to improve efficiency across the supply chain.
“This isn’t just a local initiative, it’s part of the EU-wide shift toward greater fiscal transparency through real-time data exchange.”
The regulations do provide for exceptions to the B2B mandate. In short, the submission of e-invoices will not be an obligation for businesses liable to register for VAT and not established within Belgium, and without a permanent establishment within Belgium.
The system, while supported by the Peppol Network, is based on the 4-corner (i.e. Peppol) Continuous Transaction Controls (CTC) model, meaning invoice data will be transmitted and validated electronically, potentially in near real-time, before being officially accounted for.
The e-invoicing mandate will be implemented gradually, giving businesses some time to adapt. The upcoming timeline, as prescribed:
While the deadline may feel distant, companies should prepare in advance—particularly entities with complex invoicing workflows or legacy systems that aren’t integrated with Peppol and will require an adjustment period.
Recommended article: Making VAT Reclaim eezi-er
Peppol (Pan-European Public Procurement Online) is an international framework that enables secure, standardised electronic-document exchange between businesses and governments. It’s already widely used across Europe for public procurement, and now it’s being adapted for B2B e-invoicing in Belgium.
Peppol has the below characteristics favoured by Belgium:
For more information on the Peppol Network.
The current mandate will require that all domestic B2B invoices must be issued electronically and must comply with the Peppol BIS 3.0 format (or approved alternative). Invoices will be submitted through a certified Peppol Access Point and validated in accordance with the CTC structure. Paper and email PDFs will no longer be considered valid invoices for compliance. These changes will require businesses to review their accounting systems, invoicing workflows, well before the January 2026 deadline.
To stay compliant with the Belgium e-invoicing mandate e-invoices must meet several technical and legal requirements, being:
“E-invoicing is no longer about convenience – it’s about legal obligation and business continuity.”
The mandatory requirement to e-Invoice currently only applies to domestic B2B transactions. However, cross-border invoicing could be the next step in the e-Invoicing frontier. Belgium’s long-term vision aligns closely with that of the EU’s ViDA (VAT in the Digital Age) initiative, which will eventually standardise electronic invoicing and electronic reporting for intra-EU transactions.
Businesses already engaged in international trade should consider future-proofing their systems with scalable solutions that accommodate both local and cross-border e-invoicing formats.
Belgium’s digital invoicing journey is about more than just tax-compliance – it’s a strategic push to implement a more integrated and efficient digital economy. The plan aims to improve tax collection and reduce any possibility of VAT fraud, reduce the administrative burdens of businesses and to increase the automation of invoicing exchange between public and private sectors. This will, in turn, ensure better data visibility for financial planning and audits.
Businesses registered in Belgium or issuing invoices to Belgian VAT-registered entities should take the following steps to comply with the upcoming mandate:
1. Assess Business Readiness
Is the business’s current accounting system Peppol-compliant? Is it possible to transmit invoices electronically in the required format?
2. Choose a Peppol Access Point
Multiple e-invoicing service providers have integrated with the Peppol Network and business entities may choose any of these certified Peppol Access Point providers.
3. Train Your Teams
Ensure that finance, legal, and IT teams understand the mandate’s implications—and the technical setup required, however, to lessen such an administrative burned, business entities can elect to utilise an e-invoicing service provider to assist with this digital transition, such as eezi – Powered by VAT IT.
4. Update Contracts and T&Cs
Make sure all business partners are aware of the upcoming requirements and the shift to e-invoicing.
5. Test and Pilot Early
The sooner you begin pilot testing your Peppol e-invoicing solution, the smoother your full rollout will be.
Further reading: E-invoicing and VAT: A Strategic Guide
Companies that implement e-invoicing before the mandate deadline often experience: Faster invoice processing; lower administrative costs; stronger audit trails; fewer disputes and errors and improved cash flow visibility.
Belgium is setting a pace for mandatory B2B e-invoicing in the EU, utilising the Peppol Network as the bridge to this new digital reality. With the January 2026 deadline fast approaching, businesses must act now to ensure a smooth, compliant transition.
At VAT IT Reclaim, we help businesses simplify global tax and compliance challenges, including e-invoicing incorporation and Peppol-readiness. Whether you’re already sending e-invoices or just starting out, our experts can guide you every step of the way.
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