Estimate SaaS founder dilution from new investor ownership and option pool expansion. The calculator shows remaining ownership, ownership lost, and dilution risk for future rounds.
The result shows how much ownership remains after investor dilution, option pool expansion, and a future round. Dilution is normal, but excessive dilution can weaken founder incentives and control.
This is a simplified dilution model. Real cap tables should include preferred shares, SAFEs, notes, warrants, and option grants.
If current ownership is 80%, investor ownership is 18%, option pool is 10%, and future dilution is 15%, future ownership falls to about 49%.
Seed dilution varies, but founders should model investor ownership, option pool treatment, and future rounds before accepting terms.
Multiply current ownership by one minus the new dilution percentage, then adjust for any option pool increase or converted securities.
Fully diluted ownership should include the option pool, issued options, SAFEs, notes, and all shares that could convert.
Raise only the capital needed, improve valuation with stronger metrics, negotiate option pool treatment, and avoid unnecessary bridge dilution.
Multiple rounds compound dilution. A moderate dilution in one round can become severe after several financings and option pool increases.
| Module | What it shows |
|---|---|
| Post-round Ownership | Ownership after investor and pool dilution. |
| Ownership Lost | Percentage points lost in this round. |
| Future Ownership | Ownership after another modeled round. |
| Dilution Risk | Health score from remaining ownership. |