What Is a Cap Table? Founder’s Guide to Capitalisation Tables
If you are raising investment, one of the first documents investors will expect you to understand is your cap table.
Short for capitalisation table, it shows who owns what in your company. It sets out the equity split between founders, investors, employees with options, and any other stakeholders with a financial interest in the business.
At a glance, it sounds simple.
In practice, it is one of the most important documents in your raise.
A messy, inaccurate, or poorly understood cap table can create confusion, slow down due diligence, damage investor confidence, and in some cases derail a funding round entirely. A clean table, on the other hand, signals that you understand your business, your ownership structure, and the implications of investment.
In this guide, we will explain what a cap table is, what it includes, why it matters, and the common mistakes founders should avoid.
What is a cap table?
A cap table is a document, usually built in a spreadsheet, that records the ownership structure of a company.
It shows:
- who owns shares in the business
- how many shares each person or entity owns
- what percentage of the company each holding represents
- what options, warrants, SAFEs or convertible instruments may affect future ownership
- how ownership changes after new investment rounds
In simple terms, your cap table is the master record of equity in your company.
If someone wants to know who owns the business today, and what ownership could look like tomorrow, this is where they look.
Why is Your Cap Table Important?
It matters because equity is one of the most valuable parts of a startup.
It affects control, decision-making, dilution, founder incentives, investor returns, and the attractiveness of your company to future backers.
Investors use your cap table to assess questions such as:
- How much of the company do the founders still own?
- Is the ownership structure sensible for this stage of the business?
- Have too many shares already been given away too early?
- Is there an employee option pool in place?
- Will this round create any problems for future fundraising?
- Are there any hidden conversion rights or dilution risks?
Your cap table is not just an admin document. It is a strategic document.
A strong cap table helps demonstrate that the business has been built with discipline. A weak one can suggest the opposite.
What does a cap table typically include?
While formats vary, most cap tables include the following sections.
Founders’ shares
This shows how equity is split between the founding team.
Investor shares
Once external capital has been raised, the cap table will show which investors own shares and what percentage of the business they hold.
Employee option pool
Many startups create an option pool to reserve shares for current or future employees.
Convertible instruments
Your cap table may also need to account for instruments that convert into equity later, such as SAFEs, convertible loan notes, warrants, or advisor options.
Fully diluted ownership
A fully diluted table shows what ownership would look like if all options, convertibles, and similar rights converted into equity.
What does a simple cap table look like?
Here is a simple example.
Before investment:
- Founder A: 600,000 shares — 60%
- Founder B: 400,000 shares — 40%
Total shares: 1,000,000
After issuing 250,000 new shares to an investor:
- Founder A: 600,000 shares — 48%
- Founder B: 400,000 shares — 32%
- Investor: 250,000 shares — 20%
Total shares: 1,250,000
This is dilution in action.
The founders still own the same number of shares, but because new shares were issued, their percentage ownership decreases.
Dilution happens when new shares are issued and existing shareholders own a smaller percentage of the company as a result.
This is a normal part of fundraising.
Dilution is not automatically bad. If the capital raised helps grow the company and increase its value, owning a smaller percentage of a much larger business can still be a very strong outcome.
The key is understanding:
- how much dilution is happening
- what it means for founder ownership and control
- whether the raise is structured sensibly for future rounds
Why do investors care about the cap table?
Investors are not just investing in your product or pitch. They are investing in the structure around the company as well.
A cap table tells them whether the business is investable from an ownership perspective.
Red flags may include:
- a founder owning too little equity too early
- an overly complex mix of small shareholders
- unclear advisor allocations
- unresolved founder share issues
- excessive dilution from previous rounds
- convertible instruments that will create complications later
Investors want to see a business that still has room to grow, motivate its team, and support future rounds.
Common mistakes founders make
Giving away too much equity too early
In the rush to get started, some founders hand out shares too casually to early supporters, advisors, or small investors.
Not documenting ownership properly
Handshake agreements and vague promises are dangerous when it comes to equity.
Forgetting about dilution scenarios
Many founders fail to model future rounds, option pool changes, or conversions.
Creating a messy structure
Too many tiny shareholders or unclear instruments can make a company harder to back.
Not keeping the table up to date
A cap table is only useful if it reflects reality.
When should a founder create a cap table?
As early as possible.
Even at pre-seed stage, you should have a clear record of founder ownership, any issued shares, and any agreements that may affect equity.
The earlier you create and maintain a proper table, the easier fundraising becomes later.
How does the cap table affect fundraising?
It affects:
- valuation discussions
- investor confidence
- room for new investors
- whether a round is structurally viable
- the attractiveness of the company for future rounds
If founders already own very little, investors may worry that incentives are misaligned.
If the structure is unclear, legal diligence becomes harder.
In short, the cap table can either support your raise or become a problem inside it.
Final thoughts
A cap table might look like a simple spreadsheet, but it carries enormous weight.
It tells the story of ownership in your company. It shows how past decisions have shaped the business, and how future investment may change it.
For founders, understanding the cap table is not optional. It is a core part of being investor-ready.
If you are planning to raise capital, your cap table should be clean, current, and easy to explain.
Because when investors start diligencing your business, they will not just ask how much you are raising. They will ask who owns the company now, who could own it later, and whether the structure makes sense.
Your cap table answers all three.
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