Finance
Equity Split Calculator
Fair founder equity split based on contribution, risk, and capital.
Suggested equity split
- Founder A57.2%
- Founder B42.8%
Weights: commitment 25%, responsibility 20%, experience 15%, capital 15%, risk 15%, idea 10%. Use as a starting point for a real conversation — always sign a vesting agreement (typically 4 years with a 1-year cliff).
About this tool
Add each co-founder and score their contribution across idea, time commitment, expertise, capital, risk taken, and operational responsibility. Get a suggested equity split based on a weighted model — a starting point for the real conversation.
What it does
- •Unlimited co-founders
- •Six weighted contribution factors
- •Visual percentage breakdown
- •Vesting reminder built in
Use cases
- ★Pre-incorporation founder talks
- ★Bringing on a late co-founder
- ★Renegotiating an unfair split
FAQ
How are the weights chosen?
Commitment 25%, responsibility 20%, expertise 15%, capital 15%, risk 15%, idea 10% — reflecting the modern bias toward execution over the initial idea.
Should we still sign a vesting agreement?
Yes — always. The standard is 4 years with a 1-year cliff so equity is earned over time, regardless of how you split it on day one.