Startup ownership often begins simply. Two founders create a company, issue shares to themselves, and perhaps reserve some equity for future employees.
Then the company starts raising money, granting options, signing SAFEs, and bringing new investors onto the cap table. Suddenly, figuring out who owns what becomes much more complicated.
A startup capitalisation table, usually shortened to cap table, is the record that organizes this information.
The U.S. Securities and Exchange Commission describes a capitalization table as a record identifying holders of company equity securities, potentially including common stock, preferred stock, convertible notes, and warrants, along with information such as security class and number of shares held.
For founders, a clean cap table helps answer questions such as: How much of the business do I still own? What happens when SAFEs convert? How much dilution will the next funding round create?
Understanding how to build and read one is therefore an essential startup finance skill.
What Is a Startup Capitalisation Table?
At its simplest, a cap table answers one question:
Who owns what?
Cooley describes a capitalization table as a record of a company’s equity securities showing how many securities are outstanding and who owns them. A cap table can be highly detailed or provide a simplified summary of groups such as founders, employees, and investors.
Imagine a startup begins with 10 million shares:
- Founder A: 5,000,000 shares
- Founder B: 4,000,000 shares
- Employee option pool: 1,000,000 shares
On a simple fully diluted basis, Founder A owns 50%, Founder B owns 40%, and the option pool represents 10%.
As the company develops, additional rows might appear for angel investors, seed investors, preferred shares, SAFEs, warrants, or other securities.
The table becomes the ownership map of the business.
Start by Recording Every Equity Holder
When building a cap table, begin with the people and organizations that already have an ownership interest.
For each holder, you may need information such as the person’s or entity’s name, security type, number of shares, issuance date, and purchase price.
The SEC specifically notes that capitalization tables may contain common stock, preferred stock, convertible securities, warrants, and related ownership information.
Accuracy matters.
Suppose a co-founder verbally promised an adviser 1% of the company but the arrangement was never properly documented. That inconsistency can create problems when investors begin due diligence.
This is one reason the SEC advises companies preparing to raise capital to have a cap table that clearly reflects their ownership interests before meeting investors.
The numbers in your spreadsheet should match the company’s actual legal records.
Understand Authorized, Issued, and Outstanding Shares
A startup can have several different share counts, which is where beginners often become confused.
Authorized shares are the maximum shares the corporation is currently permitted to issue under its governing documents.
Issued shares are shares the company has actually issued.
Outstanding shares generally refer to issued shares that remain outstanding.
Cooley explains that issued and outstanding shares cannot exceed the company’s authorized shares. It also notes that startups commonly establish millions of shares in their initial capitalization, although the exact number can vary.
Suppose a corporation has:
10 million authorized shares
6 million issued to founders
1 million issued through completed employee grants
The company may still have authorization available for additional issuances, depending on its corporate documents.
However, percentages should always be interpreted using the appropriate denominator. This leads to another important concept: fully diluted ownership.
Learn to Read Fully Diluted Ownership
Investors frequently discuss ownership on a fully diluted basis.
Cooley defines fully diluted shares as outstanding common shares plus shares that could potentially be issued through items such as preferred-stock conversion, outstanding options, and warrants.
Imagine Founder A owns 4 million shares.
The company currently has 8 million issued and outstanding shares.
Founder A might appear to own:
4 million ÷ 8 million = 50%
But suppose another 2 million shares are represented by outstanding options and other relevant equity rights.
On a 10 million-share fully diluted basis:
4 million ÷ 10 million = 40%
That difference matters enormously during fundraising.
When discussing percentages with employees or investors, make sure everyone understands whether the number is based on outstanding shares or fully diluted capitalization.
Cooley specifically recommends using fully diluted numbers when discussing option percentages to reduce confusion.
Include the Employee Option Pool
An option pool is a block of shares reserved for equity incentives such as employee stock options.
Cooley defines it as shares reserved for issuance to service providers under options and other equity incentive arrangements.
Suppose your company has 10 million fully diluted shares and reserves 1.5 million for employee equity.
The option pool represents 15% of that capitalization.
Not all those shares necessarily belong to employees yet. Some may remain available for future hiring.
This distinction matters during venture financing because investors may request that the company increase the option pool before or alongside a funding round.
If the pool grows, existing shareholders can experience additional dilution.
Founders should therefore model option-pool changes alongside the investment itself instead of focusing only on the headline valuation.
Understand How Funding Rounds Change the Table
Now imagine your startup raises venture capital.
Before the investment, the company has a pre-money valuation of $8 million. A VC invests $2 million.
The simplified post-money valuation becomes:
$8 million + $2 million = $10 million
If the calculation is straightforward, the new investor receives approximately 20% of the company after financing.
Existing shareholders collectively move from 100% ownership to roughly 80%.
Their number of shares may not have decreased. Instead, the company created additional shares for the investor, increasing the denominator used to calculate ownership percentages.
This is dilution.
After every financing, update the cap table so that it shows both the number of securities held and the resulting ownership percentages.
Carta emphasizes that cap tables need to evolve as companies issue additional equity, hire employees, and complete financing rounds.
Account for SAFEs and Convertible Securities
SAFEs can make cap tables more complicated because they may represent future equity rather than ordinary shares today.
Y Combinator publishes several forms of post-money SAFE, including versions based on valuation caps or discounts.
A founder might raise:
$250,000 on one SAFE
$500,000 on another
$750,000 on a third
Those agreements may later convert into equity when a qualifying financing occurs.
This means looking only at today’s outstanding common shares can give founders an incomplete picture of future ownership.
YC’s guidance on SAFEs and priced rounds specifically discusses how different financing structures affect founder equity and capitalization tables.
Founders should therefore model outstanding SAFEs before negotiating the next priced round.
Otherwise, the amount of dilution revealed at conversion can become an unpleasant surprise.
Build a Pro Forma Cap Table Before Fundraising
A current cap table tells you what ownership looks like today.
A pro forma cap table shows what it could look like after a proposed transaction.
This is one of the most useful tools in fundraising.
Suppose your startup is preparing for Series A. Your model might show:
Current ownership → SAFE conversion → option-pool increase → new investor shares → post-financing ownership.
Running that scenario allows founders to understand the complete effect before signing a term sheet.
Scenario modeling is especially useful when comparing different financing proposals. Carta’s cap-table tools, for example, describe scenario modeling as a way to understand how future fundraising can affect ownership.
You might discover that Investor A offers a higher valuation but demands a much larger pre-financing option pool, while Investor B offers a slightly lower valuation with cleaner dilution economics.
The headline valuation alone would not reveal that difference.
Read the Cap Table From Several Perspectives
Once the table is built, do not look only at the founder percentage.
Read it from several angles.
First, check founder ownership. How much remains after existing and proposed financing?
Next, examine investor concentration. Does one investor control a particularly large position?
Then review the employee pool. Is enough equity available for hiring before the next funding round?
Finally, consider outstanding SAFEs, options, warrants, and other instruments that could create future shares.
A cap table is not simply a static accounting document. It helps model how decisions today affect ownership tomorrow.
This becomes increasingly important as a startup raises several rounds because small dilution events can compound.
Keep the Cap Table Clean as the Company Grows
A spreadsheet may work perfectly when a startup has two founders.
It becomes less comfortable when there are dozens of employees, multiple preferred-stock rounds, SAFEs, exercises, transfers, and hundreds of equity transactions.
Whatever system you use, maintain one reliable source of truth.
Update it when shares are issued, options are granted or exercised, securities convert, employees leave, or financing rounds close.
Carta notes that effective cap-table management becomes increasingly important around investment rounds because ownership records naturally become more complex as companies grow.
Founders should also remember that the cap table needs to agree with legal documentation.
If the spreadsheet says one thing while signed stock agreements say another, the legal documents cannot simply be ignored because the spreadsheet looks cleaner.
For complex equity matters, work with qualified legal and financial professionals.
Learning how to build and read a startup capitalisation table gives founders a much clearer view of one of their company’s most valuable assets: ownership.
Start by recording every equity holder and security accurately. Understand the difference between authorized, outstanding, and fully diluted shares, then include employee options and convertible securities such as SAFEs.
Before any financing round, create a pro forma model showing how conversion, new shares, and option-pool changes affect everyone.
Most importantly, keep the cap table updated as the startup grows.
Do not wait until an investor begins due diligence to understand your ownership structure. Review your cap table regularly, model future financing scenarios, and make sure you know exactly who owns what-both today and after the next round.