Understanding Capitalization Tables (Cap Tables) in Modern Startups

A capitalization table is essentially a ledger or spreadsheet that tracks equity ownership, security types (common stock, preferred stock, convertible notes, warrants), and shareholder percentages in a private company. At inception, founders typically hold 100% of the common stock. However, as a startup progresses through pre-seed, seed, and Series A funding rounds, new shares are minted and allocated to incoming investors, advisors, and employee incentive pools.

Every time new shares are created, the relative ownership percentage of existing shareholders decreases—a financial phenomenon known as dilution. While dilution is a natural and necessary part of scaling a high-growth company (because a smaller percentage of a significantly larger enterprise is often worth vastly more), failing to model future rounds accurately can trap founders with uncompetitive ownership stakes by the time an exit occurs.

Key Cap Table Metrics Every Founder Must Master

• Pre-Money Valuation: The estimated financial worth of a startup immediately before receiving a new round of funding or financing injection.
• Post-Money Valuation: Calculated simply by adding the newly raised investment amount directly to the pre-money valuation ($\text{Pre-Money} + \text{Investment} = \text{Post-Money}$).
• Option Pool Reserve: A designated percentage of company shares (commonly set between 10% and 15% during early rounds) reserved specifically for future employee hires and key executive recruitment. Crucially, investors usually require option pools to be established out of the pre-money valuation, directly increasing founder dilution.
• Fully Diluted Share Count: The total count of all outstanding common shares, preferred shares, convertible securities, and unallocated option pool shares combined.

Why Privacy and Client-Side Simulation Matter for Cap Tables

Cap tables contain some of the most sensitive corporate data in existence: internal salary allocations, equity splits among co-founders, valuation targets, and prospective fundraising terms. Uploading this confidential data to cloud-based financial platforms exposes companies to data security risks, corporate espionage, or unwanted data harvesting.

Our Client-Side Equity Dilution & Cap Table Simulator operates entirely within your browser memory using local JavaScript logic. No data is ever transmitted to remote databases or servers. Whether you are modeling scenarios on a secure corporate laptop, collaborating inside a locked board room, or working offline during travel, your financial projections remain strictly confidential and air-gapped.

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