Capital gains tax simulator
The Belgian entrepeneur’s tool to estimate the personal tax due on the share deal


The tool for founders who want to understand what they really keep.
Selling a company or structuring a shareholder exit is no longer just about headline valuation. From 2026 onwards, Belgian capital gains taxation changes the equation entirely, making after-tax proceeds a strategic variable founders can no longer ignore.
At Dups, we built this simulator to bridge the gap between theoretical valuation and real shareholder outcomes. It helps founders, investors, and management teams model transaction scenarios, understand dilution and taxation impacts, and estimate what actually lands in their pocket after an exit.
This is not a generic calculator. The tool is designed around real-world deal mechanics: equity ownership, acquisition structures, capital gains taxation, and shareholder waterfall logic. Whether you are preparing for an M&A process, negotiating with investors, or evaluating a future exit, it gives you a clearer framework to make informed strategic decisions.
Who is dups?
The team behind the legal and financial expertise you just read about. Discover how we help Belgian entrepreneurs close better deals.
