How to Create a Cap Table for Your Startup (Step-by-Step)

Why Your Cap Table Matters From Day One

A cap table (capitalization table) is the single most important financial document your startup will maintain. It tracks who owns what, how much each stakeholder's ownership is worth, and how future events will change the ownership structure.

Despite its importance, many founders delay setting up a proper cap table until their first fundraise -- when it becomes urgent and messy. This guide walks you through building your cap table from scratch with real numbers and practical examples.

What Is a Cap Table?

A cap table is a spreadsheet or software system that records:

As your company grows, the cap table becomes increasingly complex with multiple share classes, option pools, convertible instruments (SAFEs, convertible notes), and anti-dilution provisions.

Step 1: Set Up Your Share Structure at Incorporation

When you <a href="https://opencapstack.com/incorporation">incorporate your startup</a>, you will authorize a set number of shares.

Authorized Shares

Most startups authorize 10,000,000 shares of common stock at incorporation. This number is somewhat arbitrary -- what matters is the percentage each stakeholder owns, not the absolute number of shares.

Example: Two Co-Founders

Key Decisions at This Stage

Founder split: Decide how to divide equity among co-founders. A 50/50 split is common for two co-founders, but consider who had the original idea, who is contributing full-time, and relative experience levels.

Option pool size: Reserve 10-20% for future employee grants. A 15-20% pool is typical if you plan to raise venture capital, as investors often require an option pool before they invest.

Vesting schedules: Yes, founders should vest too. Standard founder vesting is 4 years with a 1-year cliff, often with 1 year of credit for prior work.

Step 2: Record Your Share Classes

At incorporation, you will likely have one share class: Common Stock. As you raise funding, you will add preferred share classes.

Common Stock

Common stock is what founders, employees, and advisors receive. It typically has 1 vote per share, no liquidation preference, and no dividends.

Preferred Stock (Added at Fundraising)

When you raise a priced round, investors receive preferred stock with features like liquidation preference (typically 1x non-participating), anti-dilution protection, board seats, and pro-rata rights.

Set up your share classes in <a href="https://opencapstack.com/cap-table-software">OpenCap Stack</a> to track the specific rights and preferences for each class.

Step 3: Create Your Option Pool

The option pool is a block of shares reserved for future equity grants to employees, advisors, and other contributors.

Sizing Your Option Pool

Granting Options from the Pool

When you hire and grant stock options, you allocate shares from the option pool. Track each grant with: number of options, strike price (must equal the <a href="https://opencapstack.com/409a">409A fair market value</a>), vesting schedule, option type (ISO or NSO), and grant date.

Example: Your first engineering hire receives 100,000 options from the 2,000,000 option pool:

Step 4: Add SAFEs and Convertible Notes

Before a priced round, many startups raise money through SAFEs (Simple Agreement for Future Equity) or convertible notes. These instruments do not immediately appear as shares on your cap table -- they convert to equity later -- but you must track them.

Recording a SAFE

When you receive a SAFE investment, record the investor name, investment amount, valuation cap, discount rate, pro-rata rights, and MFN clause.

Example: You raise $500K via two SAFEs:

These SAFEs will convert to preferred shares at your next priced round. The number of shares each investor receives depends on the round's valuation relative to their caps and discounts.

Step 5: Model Your First Priced Round (Dilution)

When you raise a priced round (typically a Seed or Series A), new shares are issued to investors, diluting all existing stakeholders. Understanding dilution is critical.

Example: $2M Seed Round at $8M Pre-Money

Notice how Founder A's ownership dropped from 45% to 36%. This is normal. The key insight: while the percentage decreases, the value of each share increases if the company is growing.

Step 6: Maintain and Update Regularly

A cap table is a living document. Update it whenever new equity grants are issued, options are exercised, SAFEs convert, new funding rounds close, shares are transferred, or the <a href="https://opencapstack.com/409a">409A valuation</a> changes.

Common Mistakes to Avoid

Getting Started with OpenCap Stack

Set Up Your Cap Table in 5 Minutes

Your future self -- and your investors -- will thank you for setting up a clean cap table from day one.