Connect Billit to Bouwflow: forward invoices without retyping
With the Billit integration you send your sales invoices straight from Bouwflow to Billit. Your accountant processes them there and you send them electronically over Peppol. No second round of typing, no export files.
What is Billit?
Billit is a Belgian platform for online invoicing and e-invoicing. You create your invoices in it, manage your incoming and outgoing documents and send invoices over Peppol, the European network for electronic invoicing that has been mandatory for B2B in Belgium since 1 January 2026.
Billit is a certified Peppol access point and connects to more than a hundred tools, from accounting packages to payment services. For many Belgian SMEs and accountants, Billit is the central link between the business and the bookkeeping. With the Billit integration, Bouwflow plugs into it: your invoices from Bouwflow land straight in Billit.
What is Bouwflow?
Bouwflow is ERP software for construction contractors. From one place you manage your job sites, calculations, quotes, work orders, materials and the communication with your accountant. More than a thousand construction professionals use Bouwflow to run their project admin faster and more clearly.
The Billit integration you see on this page is one of our direct connections to the tools you already use as a contractor, from your accounting and your bank to your calendar.
How does the Billit integration work in Bouwflow?
You enable the integration in Bouwflow under Settings → Integrations with your Billit API key. After that you send your invoices from Bouwflow to Billit in a few clicks.
How Bouwflow plugs into your accountant- Enable the integration under Settings → Integrations and paste in your Billit API key. That is all it takes to start.
- Send your invoices to Billit via Accountant → Send, choosing Billit as the type.
- Your invoices are immediately available in Billit, ready for your accountant to process and for your e-invoicing.
- The integration works one way: from Bouwflow to Billit. Invoices you create in Billit itself do not come back into Bouwflow.
- You decide which invoices and which period you send, so your accountant gets everything in one orderly batch.
Why contractors use Billit with Bouwflow
Never type an invoice twice
You create your invoices in Bouwflow, based on your quotes, work orders and progress statements. With the integration they then land in Billit automatically, without anyone having to retype them.
Ready for e-invoicing and Peppol
Since 1 January 2026 e-invoicing is mandatory for B2B in Belgium. If you use Billit as your access point, your invoices from Bouwflow sit in exactly the right place to be sent electronically.
Smooth handoff to your accountant
Your accountant carries on in Billit with the invoices that come from Bouwflow. Less back and forth with PDFs and emails, and less room for retyping mistakes.
Project admin and invoicing in one place
In Bouwflow your invoices belong to the right project, the right customer and the right site. What you send to Billit starts from those same correct details.
Simple to set up
All you need is your Billit API key. You paste it into Bouwflow once, and after that you send your invoices in a few clicks every time.
Ready to connect Billit?
You enable the Billit integration in Bouwflow under Settings → Integrations with your Billit API key. You then send your invoices via Accountant → Send, choosing Billit as the type.
