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Cap Table Calculator
Model your startup's capitalization table
Founders
40.00%
$4,000,000
40.00%
$4,000,000
Investors
10.00%
$1,000,000
Option Pool
Pool Size
10.00%
Available
800,000
Issued
200,000
Valuation
Cap Table Summary
| Shareholder | Shares | Ownership | Value |
|---|---|---|---|
| Founder 1 | 4,000,000 | 40.00% | $4,000,000 |
| Founder 2 | 4,000,000 | 40.00% | $4,000,000 |
| Seed Investor(seed) | 1,000,000 | 10.00% | $1,000,000 |
| Option Pool (Reserved) | 800,000 | 8.00% | $800,000 |
| Option Pool (Issued) | 200,000 | 2.00% | $200,000 |
| Total | 10,000,000 | 100.00% | $10,000,000 |
Ownership by Category
Founders80.0%
Investors10.0%
Option Pool10.0%
What is Cap Table Simulator?
A cap table (capitalization table) simulator models company ownership across multiple funding rounds, showing each shareholder's percentage, share count, and value. It tracks common stock (founders), preferred stock (investors), option pools (employees), and convertible instruments (SAFEs/notes) through their lifecycle.
How to use this calculator
- 1Enter your current shareholders and share counts in the founding round section.
- 2Add each subsequent financing round with the investment amount, pre-money valuation, and option pool changes.
- 3Input any convertible instruments (SAFEs, notes) that will convert at your next priced round.
- 4Review the fully diluted ownership percentage for each shareholder class at the current round.
- 5Model 2–3 future rounds by adding them in sequence to project founder ownership at each stage.
Why this matters for founders
The cap table is the definitive record of who owns what in your company. Errors or misunderstandings in the cap table lead to legal disputes, botched fundraises, and broken co-founder relationships. Every founder should be able to model their cap table from memory.
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