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Cap tables for startups explained: What they are and how they work

Learn what a cap table for startups is, why it matters, and how to manage it as your company grows.
Legal
April 29, 2025
|
7 min.

Building a startup means making hundreds of decisions that impact your company’s future—few are as fundamental as how you track and manage ownership. That’s where your cap table comes in. Whether you’re about to bring in your first investor or planning for growth, understanding your cap table is essential to avoid surprises and stay in control. In this guide, we’ll walk you through what a cap table for startups is, why it’s so critical, and how to build and manage one at every stage.

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What is a cap table?

A cap table, or capitalization table, is one of the most essential documents any founder will ever manage. It’s a comprehensive record of every person or entity that owns a part of your company. In practice, this means it lists out all of your company’s securities—common shares, preferred shares, stock options, warrants, and anything else that represents ownership. Next to each security, you’ll see who owns it, how much they own, and what percentage that represents of the whole company.

In the early days, a cap table for startups is typically a simple spreadsheet that only includes the founders and perhaps a handful of early investors. But as your startup grows, the cap table becomes a living document—tracking new investors, multiple funding rounds, convertible notes or SAFEs, employee stock options, and any changes to ownership along the way. Each new investment or grant adds a layer of complexity, making it more important than ever to maintain an accurate and up-to-date record.

More than just a record-keeping tool, the cap table is the foundation for strategic decisions. Investors, employees, and founders all rely on the cap table to understand what their stake in the company is worth today, and what it could become in the future. It’s your single source of truth for ownership.

Why do startups need a cap table?

Every founder who has ever raised a round—or even just granted a stock option—knows that equity management gets complicated quickly. That’s why a cap table for startups is non-negotiable, even in the earliest days. Here are four reasons why you simply can’t skip this step:

Fundraising transparency

When you approach investors, one of the first things they’ll want to see is your cap table. They need a clear, trustworthy breakdown of who owns what and how their investment will affect the structure. A transparent cap table demonstrates that your house is in order and helps build investor confidence from the very beginning. It also ensures that you understand dilution: each time you raise money, your ownership percentage shrinks to make room for new investors. The cap table lets you see—before you sign anything—exactly how those numbers change.

Making key decisions

Many major company decisions require shareholder approval, such as issuing new shares, selling the business, or amending the company charter. The cap table lets everyone see who holds voting power, how votes are distributed, and what alliances might be needed for a decision to pass. This is particularly relevant as you take on institutional investors or grant equity to employees, since your own stake—and your control—will change over time.

Compliance and legal clarity

Mistakes in ownership records can turn into expensive legal and tax headaches. Your cap table serves as evidence for compliance with securities laws and shareholder agreements. Regulatory filings, due diligence for funding rounds, and even company audits will depend on a clean, accurate cap table.

Planning for growth and hiring

As you hire employees and incentivize them with equity, a cap table for startups allows you to track what’s available in your employee option pool, what’s been granted, and what’s still up for grabs. This visibility is crucial for planning compensation packages and staying competitive as you scale your team.

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How to build a cap table from scratch

Many first-time founders wonder if they need a fancy platform to get started, but you can build a solid cap table for your startup in a simple spreadsheet. Here’s how to do it right from day one:

Columns to include:

  1. Shareholder information: Clearly list every individual or entity with an ownership stake. Note if they are a founder, employee, investor, advisor, or other.

  2. Type of equity: Break down the equity types—common shares for founders and employees, preferred shares for investors, options or warrants for employees and advisors, and any convertible notes or SAFEs.

  3. Number of shares: Include both the number of authorized shares and the number of shares actually issued. Don’t forget to separately track granted stock options versus those still available for new hires.

  4. Ownership percentages: Show the percentage each holder owns out of the total shares outstanding.

  5. Valuation and pricing: Record the price per share at which equity was issued and any relevant company valuation after each round.

  6. Terms and rights: For preferred shares, include details on liquidation preferences, conversion rights, anti-dilution clauses, or any special voting rights.

  7. Employee stock option pool (ESOP): Track how much of your option pool has been allocated versus what remains available. This is key for attracting and retaining talent as you grow.

  8. Convertible notes and SAFEs: Record the amount raised, the terms (discount rate, valuation cap), and when/how these instruments will convert into equity.

  9. Share classes: If you have multiple classes of shares (like Class A and Class B, or multiple preferred rounds), make sure the differences are clear—especially in voting rights and conversion rules.

Steps:

  1. List each person/entity with ownership.
  2. Add the type and amount of equity they hold.
  3. Calculate their percentage of total outstanding shares.
  4. Update each time there’s a new share issuance, funding round, or stock option grant.

You can start in Excel/Google Sheets, but as your company grows, specialized tools (like Carta or Pulley) help automate and reduce human error.

How to use your cap table during funding rounds

When you’re raising money, your cap table is your most important tool for negotiating and planning. Here’s how you should use it:

Simulate dilution scenarios

Before you sign any term sheet, use your cap table to simulate different investment scenarios. What happens to founder ownership if you raise $500,000 at a $2M valuation? How does a new option pool impact everyone’s percentages? By modeling these outcomes, you can make informed decisions—and avoid unpleasant surprises later.

Negotiate terms with clarity

Investors will use your cap table for startups to analyze how much of the company they’ll own post-investment, what rights they’re getting, and how future rounds will affect their stake. You’ll also use it to make sure you aren’t giving up too much control or leaving the founders with too little incentive.

Track and adjust option pools

Many investors will require an increase in the employee option pool before a funding round, to ensure there’s enough equity for future hires. Your cap table should show how much of the pool is already granted, and what’s still available, so you know exactly how much room you have for future team growth.

Keep everyone aligned

After closing a round, immediately update your cap table and share the new version with all relevant stakeholders—founders, employees, and investors. Transparency is crucial for trust and future planning.

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How cap tables evolve as your startup grows

A cap table for startups isn’t static—it grows more complex with every funding event, hire, or major business decision. Here’s how it typically changes over time:

1. Founding stage:
The cap table is simple, often just two or three founders. Equity is split among the founding team, possibly with vesting schedules to ensure commitment. At this stage, there are rarely other shareholders.

2. Early hires and advisors:
As you bring on key employees or advisors, you’ll set aside an employee stock option pool (ESOP). These options might not be exercised immediately, but you must track how many have been granted versus what’s left for future hires.

3. Seed funding and convertible instruments:
Once you start raising outside capital, the cap table expands. You might issue preferred shares to new investors, or raise money using convertible notes or SAFEs. These instruments convert into equity at a later date—so the cap table must clearly indicate which amounts are placeholders (pending conversion), and how they’ll impact the structure in the next round.

4. Series A and beyond:
With each successive funding round, new classes of preferred shares are added. Existing stakeholders are diluted as new investors come in. You may also see special rights or protections for certain investors (such as anti-dilution clauses), making the calculations more complex.

5. Mergers, acquisitions, and exits:
If the company is acquired or prepares for an IPO, the cap table becomes the source of truth for distributing proceeds. Any secondary share sales or special arrangements must be reflected accurately to avoid disputes at exit.

6. Fully diluted view:
By the time a startup matures, a “fully diluted” cap table for startups is essential. This means showing ownership as if all options, warrants, and convertible notes have been exercised—providing a realistic snapshot of who would own what if every possible equity claim were fulfilled.

A living cap table lets you plan for the future and adapt to every stage of your startup’s journey.

Cap table vs. share register: What’s the difference?

Founders often confuse the cap table with the share register, but these are two different documents serving separate purposes.

The cap table for startups is an internal tool—used by founders, investors, and legal teams—to plan, make decisions, and manage dilution. It tracks every change in ownership and allows for modeling different scenarios during fundraising or hiring.

The share register, in contrast, is a formal legal record of all issued shares, required by law in most jurisdictions. It includes the names and addresses of shareholders and details about each share issued, transferred, or canceled. While the cap table helps you plan, the share register keeps you legally compliant.

Both are essential, but only the cap table gives you the flexibility and detail you need to run and grow your startup effectively.

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Frequently asked questions

Do I need a cap table if my startup is just me and my co-founder?
Absolutely. Even with only two people, a cap table for startups keeps you both aligned, helps manage vesting, and ensures you’re ready when you eventually raise funds or grant options.

How often should I update my cap table?
Every time there’s an equity event: new funding, a stock option grant, exercise, transfer, or any share issuance. Staying up to date prevents legal and financial headaches down the line.

Can I use a template or do I need a lawyer?
You can start with a template, but it’s best to review your cap table with a legal or financial expert—especially before major funding rounds or issuing complex securities.

What’s the biggest mistake founders make with cap tables?
Not updating them promptly or misunderstanding the impact of new investments and option grants. This can lead to confusion, disputes, and even the loss of control over your company.

Should I switch to a specialized platform as we grow?
Yes. As your company becomes more complex, platforms like Carta or Pulley help automate updates and prevent human error—keeping your cap table for startups reliable and investor-ready.

Don’t wait until your next funding round to fix your cap table. Book a call with our legal team and let’s set up your cap table for growth, compliance, and peace of mind.

Disclaimer: This article is for educational purposes only and does not constitute legal or financial advice. For tailored guidance, consult a qualified attorney or advisor.