Cap Table Calculator
Total Shares:
Founders: 0%
Option Pool: 0%
Investors: 0%
Disclaimer: This calculator is intended for educational and informational purposes only. It does not constitute financial, investment, or legal advice, and should not be relied upon as such. Always consult a qualified financial advisor before making any investment or funding decisions.
Data Privacy Note: Your data stays private. All calculations are performed instantly in your browser, and we do not store, save, or transmit your financial data to any server. The information you enter is used solely to generate your results in real time.
Methodology
The calculator follows standard venture capital capitalization table mechanics, ensuring clarity at every step of the equity modeling process.
Key principles used in the tool include:
- Fully diluted share count modeling, incorporating founders, option pools, and issued investor shares
- Clear distinction between pre-money and post-money valuation frameworks
- Ownership calculated strictly as a function of shares outstanding, not subjective valuations
- Real-time dilution effects reflected immediately as inputs change
At its core, ownership is calculated using the widely accepted post-money ownership formula:
For valuation-based investment modeling, the calculator aligns with standard VC math:
How to Use the Cap Table Calculator
Follow these steps to model ownership and dilution accurately using the cap table calculator:
- Enter Founders’ Shares
Input the total number of shares currently held by founders before any new financing. - Add the Option Pool
Include shares reserved for employee stock options. These are typically created or expanded before a funding round and impact founder dilution. - Input Investor Shares or Investment Amount
Enter the number of shares issued to investors (or the calculated equivalent based on valuation, if applicable). - Review Ownership Breakdown
The calculator instantly displays the updated ownership percentages for founders, employees (option pool), and investors. - Analyze Dilution Effects
Adjust any input to see how issuing new shares affects existing stakeholders in real time. - Use for Scenario Planning
Test multiple funding scenarios (e.g., larger option pool, higher investment) to understand trade-offs before negotiating terms.
Definitions of Key Equity Terms
| Term | Definition |
|---|---|
| Option Pool | Shares reserved for future employees, usually created before a funding round and factored into founder dilution. |
| Fully Diluted Shares | The total number of shares outstanding assuming all options, warrants, and convertible securities are exercised. |
| Price Per Share | The implied value of a single share, typically calculated as company valuation divided by fully diluted shares. |
| Dilution | The reduction in ownership percentage caused by the issuance of new shares. |
| Pre-Money Valuation | The value of the company before receiving the latest round of investment. |
| Post-Money Valuation | The value of the company immediately after new capital is invested. |
| Liquidation Preference | A term defining how proceeds are distributed to investors in a liquidity event before common shareholders are paid. |
Frequently Asked Questions
A Series A round introduces new preferred shareholders and typically increases the total number of shares outstanding. This results in dilution for existing shareholders, including founders and employees. In many cases, investors also require an expanded option pool to be created before the round closes, which further affects founder ownership. A well-structured cap table helps founders understand these changes before agreeing to terms.
A cap table (capitalization table) is a summarized view of a company’s ownership structure, showing who owns what percentage of the company on a fully diluted basis. An equity ledger, on the other hand, is a detailed legal record that tracks individual equity grants, issue dates, vesting schedules, and transfer history. Cap tables are used for planning and analysis, while equity ledgers are used for compliance and record-keeping.
Convertible notes typically convert into equity during a priced financing round, such as a Series A. The conversion is based on predefined terms in the note, usually including a valuation cap, discount rate, or both. These terms determine the effective price per share at conversion, often resulting in note holders receiving shares at a more favorable price than new investors. Once converted, the new shares are added to the cap table, increasing dilution for existing shareholders.
