Startup Equity & Cap Table Simulator
Simulate founder equity splits, Employee Stock Option Pools (ESOP), and dilution through successive funding rounds.
Simulate funding rounds and calculate founder dilution and exit payouts
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Post-Series A Cap Table Ledger
| Shareholder | Shares Held | Ownership % | Exit Payout Payout |
|---|---|---|---|
| Founder 1 | 0 | 0% | $0.00 |
| Founder 2 | 0 | 0% | $0.00 |
| Employee ESOP Pool | 0 | 0% | $0.00 |
| Seed VC Investors | 0 | 0% | $0.00 |
| Series A VC Investors | 0 | 0% | $0.00 |
How to use this tool
100% Client-Side Calculations
All cap table configurations, stock splits, and dilution forecasts run completely inside your browser. No details about your startup or shareholders are uploaded to our servers.
How to Simulate Equity Dilution
Establish cofounder splits, declare options, and add funding rounds to track ownership shares.
Set Cofounder Split
Define initial share allocations and ownership percentages for founders at inception.
Simulate Funding Rounds
Input funding amounts, pre-money valuations, and target employee option pool (ESOP) updates.
Inspect Payout & Dilution
Track ownership decay and view simulated payout distribution values based on an exit valuation target.
Frequently Asked Questions
Equity splits and investor financing terms.
What is pre-money vs. post-money valuation?
Pre-money valuation is the estimated value of the company before it receives a investment round. Post-money valuation is the pre-money valuation plus the amount of capital raised in the current round. Dilution is calculated using the post-money valuation.
How does the option pool (ESOP) impact founder dilution?
Creating or expanding an Employee Stock Option Pool before an investment round typically dilutes the existing shareholders (founders) rather than the incoming investors. This is called a “pre-money option pool expansion” and reduces founder ownership.
What is exit value payout?
The payout distribution estimates the cash proceeds for each stakeholder category (Founders, Investors, Employees) if the startup is acquired or goes public at a specific price. This calculator assumes simple pro-rata distributions without liquidation preferences or participating rights.
Privacy & Safety Policy
All tools run completely in your browser via client-side JavaScript. We do not upload your files, interest parameters, or JSON payloads to any server. Your data remains yours.