Factosyn: AI Invoices & Peppol

Factosyn is the invoicing app built for freelancers and small businesses in Belgium. Type or speak one sentence and the AI prepares the invoice or quote: you review it, you issue it.

INVOICE IN ONE SENTENCE
“3 days of consulting for Maison Dubois at €450 a day, payment within 15 days.” Factosyn finds the customer, creates the lines, applies the right VAT and works out the due date. Nothing goes out without your approval.

PEPPOL, EFFORTLESS
Since 1 January 2026, Peppol e-invoicing has been mandatory between Belgian businesses. Factosyn sends and receives your invoices over the Peppol network (BIS 3.0 format) and shows the status of every delivery.

YOUR PURCHASES, SNAPPED
Take a photo of a receipt or supplier invoice: supplier, VAT and amounts fill in by themselves. Invoices received over Peppol land straight in your purchases.

EVERYTHING YOU NEED IN BELGIUM
• Invoices, quotes, credit notes and payment requests
• Belgian VAT, reverse charge, EU goods and services
• Structured communication and payment QR code on every invoice
• Automatic e-mail reminders, in the customer’s language
• Bank connected through our licensed partner: payments come in on their own and invoices are matched automatically
• VAT return boxes and an export for your accountant

YOUR ACCOUNTANT, CONNECTED
Invite your accountant: they see your figures, expenses and missing documents, and can ask you for a receipt.

WITH YOU EVERYWHERE
The app and the web version share the same account: start an invoice on your phone, finish it on your computer. Get notified when an invoice is paid or received.

SECURE
Two-step verification, visible and revocable sessions, data hosted in Europe. Your documents stay downloadable for the full legal retention period.

Available in English, French and Dutch.

Factosyn is published by Synapse Connect SRL (BE 1015.703.826).