Co-Founder Equity Split Calculator
A structured starting point for the founder equity conversation. Score each founder 0–10 on five weighted factors. Always pair the result with 4-year vesting and a 1-year cliff.
Your numbers
| Name | Commitment | Execution / role | Expertise | Capital | Idea | |
|---|---|---|---|---|---|---|
- Option poolreserved
- 10%
Fund Force runs an AI analysis of your market and matches you with investors, accelerators and grants that fit your stage and sector.
Get matched with Fund Force →Near-equal splits are common and fine when both founders are full-time and equally committed.
Use 4-year vesting with a 1-year cliff for every founder so equity follows ongoing contribution.
The formula, in plain English
- Score = 30% commitment + 25% execution + 20% expertise + 15% capital + 10% idea
- Founder share = Score ÷ Sum of scores × (100% − Reserved pool %)
Frequently asked questions
Should co-founders split equity equally?
Equal splits are common among full-time founders starting together and avoid early resentment; differences in commitment, capital or prior work justify unequal splits.
Why do founders need vesting?
If a co-founder leaves early, vesting ensures unvested shares return to the company rather than staying with someone no longer contributing. Investors will require it.
How much does the idea count?
Less than most people think — execution creates value. That is why the idea carries only 10% here.
Results are estimates for planning and education — not financial, legal or tax advice.