E-Invoicing Belgium

E-Invoicing Belgium | Peppol-Ready Online Invoicing

From January 2026, businesses in Belgium must use structured electronic invoices for B2B transactions. Flick makes the switch easy with a secure, automated, and fully compliant invoicing platform.

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What is E-Invoicing?

E-invoicing is the process of creating, sending, receiving, and storing invoices in a structured digital format. It follows the EN16931 European standard and must be issued in Peppol-BIS format to ensure secure and automated transactions. Note : PDFs or traditional paper invoices do not qualify as e-invoices.

Key Deadlines for E-Invoicing in Belgium

MAR

Mandatory B2G E-Invoicing

March 1, 2024

All businesses working with public authorities must issue structured e-invoices for contracts above €3,000. Federal authorities require e-invoicing for lower amounts as well.

JAN

Mandatory B2B E-Invoicing

January 1, 2026

All VAT-registered businesses in Belgium must issue structured e-invoices in Peppol-BIS format via the Peppol network.

E-Invoicing Requirements in Belgium

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1. Structured Electronic Invoicing is Mandatory

From January 1, 2026, all VAT-registered businesses in Belgium must use structured electronic invoices for B2B transactions. These invoices must follow the EN16931 standard and be issued in Peppol-BIS format.

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2. Invoices Must Be Sent and Received via the Peppol Network

B2B invoices must be exchanged through the Peppol network to ensure secure transactions. If both parties do not agree on an alternative format that meets EN16931 then using Peppol will be mandatory.

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3. Invoice Archiving Requirements

Businesses must store electronic invoices for at least seven years as required by Belgian VAT regulations. Invoices must remain unchanged throughout the retention period.

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4. Methods for Sending and Receiving E-Invoices

There are two primary ways for businesses to send and receive e-invoices in Belgium:

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Peppol Network

The mandatory and most secure method for structured invoice exchange.

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Government-Supported Platforms

For businesses not yet connected to Peppol:

•Mercurius – A portal for sending invoices to public authorities.
•Hermes – A platform for receiving invoices from European suppliers.

Seamless E-Invoicing in Belgium with Flick Network

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Easily Integrate with Your Systems

Flick's e-invoicing solution connects with your ERP CRM or financial software so you can automate invoicing without changing your existing setup. No need for manual data entry or complicated processes. Flick converts invoices into Peppol-BIS or UBL format to meet Belgian regulations.

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Fully Integrated with the Peppol Network

Flick's e-invoicing solution is fully connected to the Peppol network which allows businesses to send and receive invoices securely. With Peppol compliance you can exchange invoices across Belgium and internationally without manual work.

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Automate Your Invoicing Process

Flick's e-invoicing solution helps you automate the entire invoicing process from creation to approval to payment. No need for manual data entry or checking invoices one by one. Invoices are sent and received instantly which reduces delays and improves accuracy.

Benefits of E-Invoicing

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Faster Payments and Better Cash Flow

E-invoices are processed automatically which reduces delays caused by manual approvals and mistakes. This helps you get paid faster and keeps your business cash flow steady.

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Lower Costs and Less Work

Paper invoices take time and cost money for printing, mailing and data entry. E-invoicing saves money by automating the process which reduces extra work and removes manual tasks.

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Fully Digital and Paper-Free

No need for paper invoices or PDFs. You can create, send and receive invoices online which makes your workflow simple and fast. All invoices are stored safely and are easy to find whenever needed.

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Safe and Fraud-Free Transactions

E-invoicing protects your business from fraud by using structured formats that cannot be changed. The Peppol network ensures invoices are sent and received securely which prevents tampering and fraud risks.

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Fewer Mistakes and More Accuracy

Manual invoices often have errors such as missing tax details or incorrect amounts. E-invoicing removes these mistakes by following a structured format which ensures invoices are correct before processing.

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Meets Belgian E-Invoicing Rules

E-invoicing helps your business follow all Belgian VAT and EN16931 standards. This ensures compliance which helps you avoid penalties and makes tax reporting easier.

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Scales with Your Business Growth

As your business grows manual invoicing becomes difficult for you but e-invoicing scales with your business making it easier for you to manage more invoices.

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Better for the Environment

E-invoicing reduces waste by removing the need for printing and paper storage. This makes your business more eco-friendly and supports sustainability goals.

Everything You Need for Secure and Compliant E-Invoicing in Belgium

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Automatic Invoice Conversion

Easily convert your invoices into Peppol-BIS, UBL, or XML formats to meet Belgian e-invoicing rules. This ensures smooth processing and secure data exchange with businesses and government authorities.

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Built-in Validation and Fraud Protection

Check your invoices for mistakes and fraud before processing. Our system automatically detects errors and prevents unauthorized changes and keeps your transactions secure.

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Secure Digital Storage

Automatically store your invoices for up to seven years as required by Belgian VAT laws. Keep them safe, organized, and easy to access when needed for audits or financial tracking.

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Easy Integration with Your System

Our e-invoicing system connects smoothly with your ERP, CRM, or accounting software. This allows you to exchange invoices effortlessly without changing your existing workflow.

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100% Compliance and Security

Stay compliant with Belgian and international e-invoicing standards such as Peppol EN16931 and VAT regulations. Our system follows the highest security standards which protect your business data.

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Real-Time Invoice Tracking and Alerts

Monitor your invoices at every stage from sending to receiving to processing. Get automatic updates to avoid delays and maintain better control over your cash flow.

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Cloud-Based Access from Anywhere

View and manage your invoices anytime and anywhere with our cloud-based solution. No need for physical storage or additional software installations.

Frequently Asked Questions (FAQs)

What is the Peppol network?

Peppol is a secure international network for exchanging structured invoices between businesses and government entities. Belgian businesses must use Peppol unless both parties agree on an alternative format that meets EN16931 standards.

What invoice format is required for compliance?

Invoices must follow the EN16931 European standard and be issued in Peppol-BIS format to ensure compliance with Belgian e-invoicing regulations.

Can I still use paper or PDF invoices?

No, from January 1, 2026, paper and PDF invoices will no longer be valid for B2B transactions. Only structured electronic invoices exchanged through Peppol or an agreed-upon format that meets the same standard will be accepted.

How long do I need to store e-invoices?

Belgian VAT regulations require businesses to store e-invoices for at least seven years to ensure compliance and allow for audits when necessary.

Can e-invoicing be integrated with my existing accounting system?

Yes, Flick’s e-invoicing solution integrates seamlessly with your ERP, CRM, and accounting software.

Will e-invoicing be required for cross-border transactions?

Structured e-invoicing for international transactions is currently optional but recommended.

Are there any exceptions to the mandatory e-invoicing rule?

Yes, certain businesses are exempt from the requirement to send structured e-invoices, including:

VAT-exempt businesses under Article 44 of the VAT Code
Bankrupt businesses
Foreign businesses without a permanent establishment in Belgium

Is e-invoicing required for B2C transactions?

No, e-invoicing is not required for B2C (Business-to-Consumer) transactions.

Can I send invoices to businesses outside Belgium?

Yes, Peppol allows businesses to send and receive invoices internationally.

Can small businesses benefit from e-invoicing?

Yes, e-invoicing is beneficial for businesses of all sizes. Small businesses can reduce administrative work, speed up payments, and ensure compliance with Belgian tax regulations.

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E-Invoicing Belgium