“Can a 40-year-old Belgian desktop accounting vendor re-platform to cloud + AI + Peppol fast enough to keep its fiduciaire customer base through the 2026 e-invoicing mandate?”
WinAuditor is a small (≈9 employees) Belgian vertical-SaaS accounting software vendor serving fiduciaires (accounting firms), SMBs and self-employed users. Founded on the desktop accounting market in 1985 and incorporated as WinAuditor.net in 1997, the company is migrating to a web/cloud product with AI-assisted bookkeeping and preparing customers for Belgium's 2026 mandatory Peppol e-invoicing regime. It is not a fintech — no BaaS, card, or lending stack is disclosed.
WinAuditor is founded in 1997 and headquartered in Waterloo, Belgium.
Get a read on where your own stack stands against WinAuditor and the rest of its category — what they built versus bought, which providers they use, and where the gaps in your own strategy and competitive set actually are.