Belgium is on the verge of a major digital tax transformation that will reshape how businesses handle VAT and invoicing. Starting 1 January 2026, electronic invoicing (e-invoicing) will become mandatory for all B2B transactions, followed by the introduction of a complementary e-reporting system in 2028.
These reforms are part of Belgium’s alignment with the EU’s VAT in the Digital Age (ViDA) initiative and reflect the Federal Public Service Finances (FOD Financiën) commitment to modernize and digitize the national tax system.
For CFOs, tax managers, accountants, and compliance officers, these new e-invoicing and e-reporting deadlines present both a regulatory requirement and a strategic opportunity. Early preparation can lead to greater efficiency, reduced manual intervention, faster data validation, and improved audit compliance.
This article breaks down Belgium’s key e-invoicing deadlines, the technical standards (including Peppol BIS Billing 3.0), and transmission methods. It also explains how partnering with a certified Peppol Access Point like HubBroker can simplify your company’s journey toward Belgium e-invoicing and e-reporting compliance — offering practical insights beyond legislation.
What Is E-Invoicing & E-Reporting in Belgium?
In Belgium, e-invoicing refers to the creation, exchange, and receipt of invoices in a structured electronic format that enables automatic processing by ERP and accounting systems. This means an e-invoice is not just a PDF sent by email, but a machine-readable XML file that follows specific data and syntax standards.
Key Points
The Belgian e-invoicing mandate applies to VAT-registered businesses established in Belgium that carry out B2B transactions taxable in Belgium.
The default format is Peppol BIS Billing 3.0 (UBL), and invoices will be transmitted through the Peppol network using the four-corner model.
E-reporting, planned for 2028, will extend these requirements by requiring near real-time submission of invoice and transaction data to the Belgian tax authority (FOD Financiën).
In short:
From 2026, all B2B invoices must be issued in a structured e-invoice format.
By 2028, businesses will likely need to electronically report invoice data directly to the tax administration.
This two-step approach (e-invoicing first, e-reporting next) is central to Belgium’s digital tax modernization strategy, ensuring better VAT control, transparency, and reduced fraud.
Timeline & Key Deadlines (2026–2028)
To help you plan, here’s a quick reference summary of Belgium’s e-invoicing and e-reporting milestones:
| Date | Event | Scope |
| 1 January 2026 | Mandatory structured e-invoicing for B2B transactions under Belgian VAT law. | All Belgian VAT-registered suppliers and buyers |
| 2028 (target) | Introduction of real-time e-reporting / e-data exchange using an extended 5-corner model. | E-invoicing + data reporting |
| 1 January 2028 (tentative) | Abolition of the special flat-rate VAT scheme under broader tax reform. | Transitional regime |
Note: The precise technical specifications and scope of the 2028 e-reporting obligation are still being refined by FOD Financiën. Businesses should treat this as a preparation milestone rather than a finalized framework.
Practical Implications of the Timeline
No gradual phase-in: Almost all VAT-registered companies in Belgium will be in scope from day one (2026).
Prepare for future-proofing: By 2028, tax authorities expect access to richer transaction data, so your e-invoicing platform should be scalable for e-reporting integration.
Don’t delay preparation: Waiting until 2025 to begin system setup and testing leaves very limited time for onboarding trading partners and ensuring compliance readiness.
How Peppol Enables Compliance?
The Peppol framework is central to Belgium’s mandate. Key aspects:
-
The four-corner model:
Buyer → supplier via Access Point → Access Point → Buyer.
The parties need not connect directly, but both must be reachable via the Peppol network.
- Standard format: The required invoice format is based on the EU standard EN 16931, and Belgium confirms the preferred format as Peppol BIS (UBL) version.
- Flexibility: Other formats/legal transmission channels are possible, provided both parties agree and the invoice meets EN 16931 semantics/syntax. Belgian law allows this exception.
- Future-proofing: Since the same network will underpin the 2028 e-reporting obligation, adopting Peppol now positions you for the future.
Why does this matter for your ERP/EDI Strategy?
- Your invoicing or ERP system must be capable of generating invoices in the Peppol BIS format (or one of the permitted alternatives) and connecting to a certified Peppol Access Point.
- You will need to onboard suppliers and customers, verify that they are Peppol participants (consult in the Peppol directory), and test end-to-end exchange.
- Master data management becomes crucial: accurate Belgian VAT numbers, addresses, legal names, and invoicing codes must be maintained for automated processing.
- Since rounding rules change (e-invoice rounding only on the total per VAT rate) from 2026, system modifications may be required.
Beyond E-Invoicing: Belgium’s E-Reporting Roadmap
Beyond e-invoicing, Belgium is preparing for a broader electronic reporting regime:
What is E-Reporting?
E-reporting refers to the obligation to transmit invoice or transaction data (VAT relevant) to the tax administration in a structured manner, potentially in near-real-time, supporting audit-trail, fraud detection, and administrative efficiency. Belgium expects such a regime from 2028.
Scope & impact
- Cash registers, payment systems, and invoicing platforms may need to feed data automatically.
- The so-called four-corner Peppol model may evolve into a five-corner model (integration of tax authority endpoint) for specific flows.
- The annual listing requirement (recapitulative statements) may be abolished, replaced by continuous reporting.
Key compliance considerations
- Your e-invoicing solution must not only send/receive invoices but be capable of exporting or transmitting data to the tax authority in the required format and timeline.
- Ensure your IT / ERP landscape is ready to integrate invoice flows with reporting. The same data that flows through your Peppol-based invoicing may need further usage.
- Keep an eye on guidance from FOD Financiën and the Belgian tax authority – they will publish detailed specifications closer to 2028.
How Businesses Can Prepare – Practical Steps & ERP Integration
1. Perform a Gap Analysis
- Map current invoicing formats (PDF/email vs structured XML).
- Identify channels, ERP/EDI capabilities, and readiness of suppliers/customers.
2. Understand Your Scope
- Confirm VAT registration and B2B in-scope transactions within Belgium.
- Note out-of-scope partners (non-established entities) and plan separate flows.
3. Choose a Certified Peppol Access Point
Connect your ERP/invoicing solution through a certified service provider (e.g, HubBroker).
4. Update Your ERP/Accounting System
- Enable output in Peppol BIS (EN 16931) format.
- Apply new rounding rules (from Jan 2026) – only total per VAT rate allowed.
- Integrate master data validation (VAT number, company name, etc.).
5. Onboard Suppliers & Customers
- Identify trading partners needing to switch to structured e-invoicing.
- Offer readiness support and conduct pilot tests.
6. Test & Validate
- Run full test transactions via Peppol.
- Verify semantic and syntactic compliance.
7. Monitor for 2028 e-Reporting Readiness
- Ensure invoice data and metadata are retained for reporting.
- Follow upcoming FOD Financiën guidelines on e-reporting.
8. Communicate & Train
- Educate internal teams (AP/AR, Tax, IT, Compliance).
- Share timeline and scope updates with business partners.
9. Leverage Incentives
- Belgium offers a 20% digital investment deduction (from January 2025).
- SMEs: up to 120% deduction for e-invoicing software costs (2024–2027).
HubBroker – Your Peppol Access Point Partner
- HubBroker supports Belgian businesses through:
- Connection to the Peppol network for sending and receiving structured invoices.
- Compliance guidance on formats, rounding rules, and partner onboarding.
- Future-proofing for 2028 e-reporting: data extraction and tax authority transmission.
- ERP/EDI integration, supplier onboarding, and governance support.
Partnering with HubBroker (Book a Demo) ensures readiness, efficiency, and seamless transition toward next-generation VAT compliance.
- By HubBroker ApS
