Equity Dilution
See how founder ownership erodes across funding rounds.
FOUNDING SPLIT
ROUNDS
Investment
Pre-money
Investment
Pre-money
OWNERSHIP OVER TIME
Founding
After Seed
After Series A
Founder A44.8%
Founder B19.2%
Seed inv.16.0%
Series A inv.20.0%
What is Equity Dilution?
Equity dilution shows how founders' ownership shrinks as new investors buy in each round. This tool models the cap table stage by stage so you can see where your stake lands after each raise.
Investor % per round = investment ÷ (pre-money + investment)
How to read your result
- Set the founders' starting split, then add each round.
- Each round's investors take investment ÷ post-money; everyone else dilutes proportionally.
- The stacked bars show ownership shifting across stages.
- Dilution is normal — what matters is the value of your shrinking slice.
Frequently asked questions
Is dilution bad?
Not inherently — you own a smaller percentage of a (hopefully) much larger company. The goal is that each round grows total value more than it dilutes you.
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