Bookkeeping and insight in one place.
Documents, questions and figures ready together, for faster follow-up.
We keep your books in Yuki. For invoicing you use the software that suits you, such as Lucy or Billit. We set up the link, guide you through Peppol and stay your fixed point of contact.
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Documents, questions and figures ready together, for faster follow-up.
lucy
Lucy, Billit or another package: sent via Peppol, straight into Yuki.

Your invoices come in wherever you are, on your laptop or your phone. No more full folders and no pile waiting until you find the time.
We see those documents arrive as soon as you send them through. If something is missing or does not add up, we ask about it as soon as possible, not months later when you have long forgotten what it was about.
Figures are only useful if you see them in time. That way you know where you stand at any point in the year, not just after the close.
This is how your bookkeeping works at FinexpertYuki is the basis of every collaboration. For creating and sending invoices you are free to choose: Lucy, Billit or any other package that works via Peppol. We link it to your books.
Yuki brings documents, bookkeeping, communication and financial insight together. You submit receipts digitally, follow your figures and keep questions attached to the right document.
lucy
With Lucy you send and receive Peppol invoices, without extra features. If you also want quotes, payment reminders or a bank link, Billit is a strong option. Both forward your invoices to Yuki automatically.
Not sure which one suits you? Get in touch and together we'll look at which invoicing tool simplifies your work the most.
Peppol is a European network along which invoices travel directly from one accounting package to another. Not a pdf in a mailbox, but a structured file that your client's software can read straight away.
Since 1 January 2026 this is mandatory for every Belgian VAT-registered business that invoices other businesses. Towards public authorities the rule has applied for longer. If you work exclusively for private customers, it does not apply to your outgoing invoices.
The tolerance period of early 2026 has now passed. Anyone not yet compliant risks a fine of up to 5,000 euros.
Finexpert arranges your registration, checks your invoice details and tests with you whether sending and receiving work as they should.
Before we start, we agree clearly on documents, contact moments and responsibilities.
Then we’ll get your business in order first. We register you on the network, check that your invoices contain the right data and test together whether sending and receiving work. You do not have to figure it out yourself.
No. The only fixed agreement is Yuki, that is where we keep your books. How you invoice is up to you: Lucy, Billit or any other package that works via Peppol. We make sure your invoices end up in Yuki automatically.
Usually not. If your current software works via Peppol and can link to Yuki, you simply keep it. If it can't, we look for an alternative together, such as Lucy or Billit.
Yes, always. Yuki shows your documents, your outstanding invoices and your result up to today, on your laptop or on your phone.
We look at how you invoice today and how you submit documents. Then we set up together the way of working that fits your business.
This is how entrepreneurs rate working with Finexpert.
Mohamed M.
Very satisfied customer at Finexpert! We have relied on their expertise and trust since the start of our first independent business. Special thanks to Layla, who is always incredibly friendly, professional, and helpful. She really thinks along with us and is always ready to help. Highly recommended! ❤️🌟
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kouba F.
Top service, they help me very well and follow up on everything with the right information. Best firm I have ever had.
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BENJAMIN T.
Very satisfied with the accountant and the building. Everything looks neat, well-maintained, and professional. A pleasant environment and friendly, professional service. Definitely recommended!
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aziz D.
Very satisfied with the service! Always friendly, professional, and above all, very helpful. Everything is explained clearly, and I receive quick and correct advice when I have questions. I feel well guided and can always count on the necessary support. Definitely recommended for anyone looking for a reliable and committed accountant!
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Review group 1 of 2, reviews 1 to 4.