Estimate founder ownership after a seed round using pre-money valuation, investment amount, current founder ownership, and post-money option pool. Use it to understand dilution before signing terms.
Enter pre-money valuation, new investment, existing founder ownership before the round, and the post-money option pool percentage.
The calculator estimates investor ownership, option pool impact, and remaining founder ownership.
Ownership after a seed round affects control, incentives, and future dilution capacity. Excessive dilution at seed can make later rounds harder for founders.
Seed dilution around 15% to 25% is common. Founder ownership below roughly 60% after seed may require careful cap table review.
With a $6M pre-money valuation and $1.5M investment, investor ownership is 20%. If founders owned 85% before and the option pool is 10%, founder ownership after is 59.5%.
Many seed rounds dilute founders by about 15% to 25%, depending on valuation, round size, and option pool treatment.
Add investment to pre-money valuation to get post-money valuation, then divide investment by post-money valuation.
Yes. If the option pool is included post-money, it reduces the ownership available to founders and existing shareholders.
There is no fixed rule, but founder ownership below about 60% after seed can create concern because future rounds will cause more dilution.
A higher valuation lowers the percentage of the company sold for the same investment amount, reducing investor ownership and founder dilution.
| Metric | Meaning |
|---|---|
| Primary metric | Founder Ownership |
| Decision use | Use this result to judge startup health, investor readiness, and next operating priorities. |
| Benchmark | Seed dilution around 15% to 25% is common. Founder ownership below roughly 60% after seed may require careful cap table review. |
| Recommendation | Improve the weakest driver before scaling spend or fundraising assumptions. |