Dilution Calculator (Across Rounds)
Add each round you plan to raise. For every round we compute the new investor's share plus any option-pool top-up, and show what you own afterwards.
Your numbers
| Round | Raise ($) | Pre-money ($) | New pool % (%) | |
|---|---|---|---|---|
- Total dilution
- 60.6%
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 →Round by round
| Round | Post-money | Round dilution | You own | Stake value |
|---|---|---|---|---|
| Pre-seed | $2.5M | 30% | 35% | $875K |
| Seed | $10M | 25% | 26.2% | $2.62M |
| Series A | $40M | 25% | 19.7% | $7.87M |
The formula, in plain English
- Round dilution dᵢ = Investment ÷ Post-money + New pool %
- Ownership after N rounds = Initial % × Π(1 − dᵢ)
Frequently asked questions
How much will I own after Series A?
A common pattern is founders collectively holding 50–65% after seed and 35–50% after Series A, but it depends entirely on prices and pool top-ups.
Why does the option pool dilute founders?
Investors usually ask for the pool to be created or topped up before their money comes in, so the new shares come out of existing holders, not the investor.
Does dilution mean I lose money?
Not if the valuation rises. A smaller slice of a much bigger company is often worth more — the table shows the value of your stake after each round.
Results are estimates for planning and education — not financial, legal or tax advice.