A cap table (capitalisation table) is a structured summary of a company’s ownership. It lists all shareholders, the type of securities they hold and each holder’s percentage of the business, typically shown on a fully diluted basis.
In practical terms, the cap table is the financial map of the company. It shows how equity is divided today and how it could change tomorrow. For founders, investors and advisors, it is one of the most important working documents in fundraising, governance and exit planning.
Cap table (capitalisation table) meaning
In startup funding, the cap table’s meaning is a live snapshot of who owns what and how that ownership shifts with each round of investment.
A practical cap table definition covers:
- Ordinary shares (often held by founders and employees)
- Preference shares (commonly issued to investors in priced rounds)
- Options (granted and unallocated pools)
- Convertibles such as ASAs or CLNs
- Warrants or other equity-linked instruments
It is used to model dilution, negotiate term sheets and assess scheme eligibility, particularly for SEIS/EIS, where ownership structure and investor categories can affect compliance.
A clear cap table definition goes beyond a static spreadsheet. It is a dynamic tool for decision-making.
What a cap table typically includes
A well-maintained cap table usually contains:
- Shareholder names
- Security type (ordinary, preference, option, convertible, warrant)
- Number of shares or notional shares
- Percentage ownership (basic and/or fully diluted)
- Investment amounts (for investor rounds)
- Vesting status (for founder or employee equity)
More sophisticated cap tables also model scenario outcomes, such as new funding rounds, option pool expansions or exits, to show how ownership percentages shift under different assumptions.
Why the cap table matters in fundraising
Dilution modelling
Every funding round changes the denominator. Issuing new shares reduces the percentage held by existing shareholders. A cap table allows founders to see:
- How much equity are they giving up
- How does the increase in the option pool affect their stake
- What ownership will look like after convertibles convert
Without accurate modelling, founders risk agreeing to terms that feel reasonable in isolation but compound into significant dilution over multiple rounds.
Term sheet negotiation
When investors request a specific post-money ownership percentage, they are typically referencing a fully diluted view. The cap table becomes the tool for translating headline valuation into real percentage outcomes.
Investor signalling and transparency
Serious investors expect a clean, consistent cap table. Missing instruments, inconsistent percentages or undocumented promises of equity can undermine credibility during due diligence.
Cap table and SEIS/EIS considerations
In the UK, early-stage fundraising, cap tables are also relevant for SEIS/EIS structuring. Ownership thresholds, share classes and convertible mechanics can affect eligibility. A clear cap table helps:
- Identify connected persons
- Confirm share class structure
- Model how ASAs or CLNs will convert
- Ensure the intended structure aligns with tax scheme requirements
This is why cap table hygiene is not just financial discipline; it is compliance discipline.
Basic vs fully diluted: why both matter
Most cap tables show ownership on both a basic and fully diluted basis:
- Basic: Only issued shares are counted.
- Fully diluted: All options, convertibles and potential shares are included.
Investors generally focus on fully diluted percentages because they reflect true economic exposure after all commitments convert.
Cap table as a strategic tool
A cap table is not just record-keeping. It shapes:
- Founder control
- Investor influence
- Hiring capacity through option pools
- Exit economics
Used properly, it allows founders to plan multiple rounds ahead—protecting long-term ownership while still raising the capital required to grow.
Where UndoCapital fits
Undo Capital helps founders build and maintain a clean, investor-ready cap table by modelling basic and fully diluted ownership, future dilution scenarios and fundraising outcomes. This ensures alignment between legal documents and ownership data, supports SEIS/EIS structuring, and gives founders clear visibility when negotiating rounds, so every equity decision is made with long-term control and value in mind.
FAQs
What is a Cap Table (Capitalisation Table)?
A Cap Table (Capitalisation Table) is a document that outlines a company’s equity ownership, including founders, investors, and option holders. It shows share distribution, ownership percentages, and how equity changes over time, particularly after funding rounds or dilution events.
Why is a Cap Table important for startups?
It provides a clear view of ownership structure, helping founders and investors understand dilution, control, and financial outcomes. A well-maintained Cap Table is essential for fundraising, compliance, and strategic decision-making.
What is included in a Cap Table?
A Cap Table typically includes share classes, number of shares issued, ownership percentages, stock options, convertible instruments, and fully diluted ownership calculations.
How does a Cap Table change over time?
It evolves with each funding round, share allotment, or option exercise, reflecting dilution and new ownership stakes as the company grows.
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