FAQ

E-invoicing makes sending, receiving and managing invoices in an easier, a faster and more environmentally friendly way. To help you make the most of this modern invoicing method, we have put together a list of the most frequently asked questions. You will find in this list answers to questions about principles, legal requirements, technical aspects and much more. Whether you are a beginner or already have some experience of e-invoicing, this FAQ provides you with clear and useful information.

We have divided the FAQ per theme:

• General questions on “What is electronic invoicing?”

Here you'll find answers to the most frequently asked general questions about electronic invoicing: what standards must an electronic invoice meet, is it safe, and much more. After reading this FAQ, you will have a good understanding of the basic principles of e-invoicing.

• General questions about the B2B obligation (invoicing to enterprises)

Here you will find answers to general questions about the required e-invoicing for enterprises: when does the obligation apply, to whom does it apply, how to prepare, what costs are involved, etc.

• General questions on the B2G obligation (invoicing to public administrations)

In this section, you will learn when e-invoicing to public administrations is compulsory and how to send invoices to public administrations.

• General questions about keeping electronic invoices

Would you like to know how to store electronic documents and for how long? Here you will find clear answers to these questions and other related issues.

• General questions about Peppol

Here you will find information about Peppol, the international network enabling enterprises to exchange electronic documents.

• Specific questions on e-invoicing

This section contains more specialised information for software developers and tax experts.

• General questions on the future e-reporting obligation

Here you can find out more about the next stage: reporting e-invoices to the administration.

• Questions on e-invoicing for Peppol service providers

Peppol service providers will find out where to get more information.

For questions that have been answered extensively in an article on the website or elsewhere, a link is provided in order to keep the information up to date.

Overview updates

Theme	Date update	Content update
General questions on “What is electronic invoicing?”	07.10.2025	Question 13 added
General questions about the B2B obligation (invoicing to enterprises)	16.12.2025	Questions 7 and 8 modified Questions 16 and 17 added
	07.10.2025	Questions 2 and 9 modified Question 15 added
General questions on the B2G obligation (invoicing to public administrations)	07.10.2025	Question 2 added
General questions about keeping electronic invoices	/	/
General questions about Peppol	16.12.2025	Question 4 modified
Specific questions on e-invoicing	16.12.2025	Questions 25 added
	07.10.2025	Questions 8 and 16 modified Questions 23 and 24 added
General questions on the future e-reporting obligation	/	/
Questions on e-invoicing for Peppol service providers	/	/

Any more questions?

Are you unsure whether you are subject to this obligation? Check Who will be obliged to use e-invoicing? - e-invoice (available in Dutch, French and German) or use the tool.

Certain intersectoral and sectoral business organisations will also be organising information campaigns in the course of 2025 to provide you with further information on this. An overview of the registered events can be found under ‘Calendar'.

For technical support, please contact your software supplier. If you rely on an accountant for your bookkeeping, it is best to make arrangements with your accountant. 

For questions about Mercurius (B2G), use the Mercury contact form (see also Mercury | BOSA).

For general questions about B2B billing, please use the contact form.

Useful links