Cap table calculator
Estimate how many new option pool shares are needed to hit a target post-closing pool, and compare pre-money versus post-money pool treatment.
For post-money treatment, the target pool is solved from: pool shares ÷ post-closing shares = target pool percent.
For pre-money treatment, new pool shares are added before investor price per share is calculated, which can lower the price per share and increase investor shares.
This is simplified educational cap table math. Actual option pool treatment depends on financing documents and legal/accounting review.
With 5,000,000 current fully diluted shares, 500,000 existing pool shares, a $10M pre-money valuation, $2M investment, and a 10% target post-closing pool, the pre-money option-pool top-up is about 113,636 new shares.
The option pool shuffle is the dilution shift that happens when investors require an option pool to be created or topped up before a financing round, which usually pushes more dilution onto existing holders.
No. This is a simplified educational calculator. Actual option pool sizing depends on financing documents, legal terms, share classes, and advisor review.
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Last reviewed July 19, 2026.