How it works
Founder Equity Split Calculator
Splitting equity fairly is one of the hardest conversations for co-founders. A bad split can kill a startup before it even launches. This calculator uses a weighted contribution model to help you divide equity based on what each founder actually brings to the table.
Add founders, assign their contributions across five categories — Time & Commitment, Cash Investment, Intellectual Property, Idea & Vision, and Risk & Opportunity Cost — and see the equity split update in real time. Adjust the weights to match your priorities.
The tool includes presets for common co-founder scenarios (2 equal partners, technical + business duo, solo with advisors) and outputs a clean summary you can share with your team or take to a CA for formal documentation.