Definition
Post-money valuation is the valuation of a company after adding the capital raised in a financing round.
In a straightforward equity financing:
Post-Money Valuation = Pre-Money Valuation + New Investment
For example, if a company has a $10 million pre-money valuation and raises $2 million:
$10M + $2M = $12M post-money valuation
Under a simple structure, the new investor's ownership is:
$2M ÷ $12M = 16.67%
The existing shareholders collectively retain approximately 83.33%.
Why does post-money valuation matter?
Post-money valuation helps determine the ownership percentage associated with a new investment.
For the same $2 million investment:
Pre-money valuation | Post-money valuation | Investor ownership |
|---|---|---|
$6M | $8M | 25% |
$8M | $10M | 20% |
$10M | $12M | 16.67% |
$18M | $20M | 10% |
A higher valuation generally means the investor receives a smaller ownership percentage for the same amount of capital, assuming comparable transaction terms.
Post-money vs. pre-money valuation
The distinction is simply when the new investment is included.
Pre-money valuation:
Value before the new financing.
Post-money valuation:
Value after the new financing.
For example:
Pre-money valuation: $15 million
New investment: $5 million
Post-money valuation: $20 million
The investor's simplified ownership is:
$5M ÷ $20M = 25%
Post-money valuation and dilution
Post-money valuation provides a straightforward way to understand the percentage of the company being issued to a new investor in a simple financing.
If a company raises:
$5 million at a $20 million post-money valuation
the new investor's ownership is:
$5M ÷ $20M = 25%
Existing shareholders collectively retain 75%.
Their ownership percentage has therefore been diluted by 25 percentage points, subject to the actual capitalisation and transaction terms.
Post-money valuation and the cap table
A cap table translates the financing terms into actual ownership.
Suppose a company has:
8 million existing shares
$16 million pre-money valuation
The simplified price per share is:
$16M ÷ 8M = $2
An investor contributes $4 million.
At $2 per share, the investor receives:
$4M ÷ $2 = 2 million shares
The company now has 10 million shares.
The investor owns:
2M ÷ 10M = 20%
The resulting post-money valuation is:
$16M + $4M = $20M
→ Cap Table
Post-money valuation and ownership
In a simple primary equity financing, the relationship can be expressed as:
Investor Ownership = Investment ÷ Post-Money Valuation
For example:
$3M investment ÷ $15M post-money valuation = 20%
This relationship is useful for understanding the basic economics of a financing.
However, actual transactions can be more complicated because the ownership calculation may include:
Employee option pools
Convertible securities
Warrants
Different share classes
Other equity-linked instruments
Post-money valuation and option pools
Employee option pools can affect the effective ownership economics of a financing.
Suppose an investor agrees to invest $2 million at a $10 million post-money valuation.
The headline ownership might appear to be:
$2M ÷ $10M = 20%
But the actual ownership can differ if the agreed capitalisation includes an option pool or other securities.
The financing documents should therefore specify precisely what is included in the fully diluted capitalisation used for the calculation.
Post-money valuation and future funding rounds
A company's post-money valuation becomes part of the context for subsequent financing rounds.
For example:
Seed:
$10M post-money
Series A:
$30M post-money
Series B:
$100M post-money
These figures can change substantially as the company develops.
A higher valuation can reduce the percentage of ownership that must be issued to raise a given amount of capital, although the actual outcome depends on the financing structure.
Post-money valuation is not necessarily the company's sale value
Post-money valuation is a financing valuation.
It does not mean that:
The company could necessarily be sold for that amount.
The company's assets are worth that amount.
Every shareholder could immediately sell their shares at that price.
The company has that amount of cash.
Private-company valuations can be influenced by financing terms, investor demand, contractual rights, market conditions, and other factors.
Post-money valuation in convertible financing
With instruments such as convertible notes or certain SAFEs, the relationship between investment and ownership can be more complicated.
The instrument may convert into equity later rather than establishing the final share ownership immediately.
Terms such as:
Valuation caps
Discounts
Conversion mechanics
Other contractual provisions
can affect the eventual ownership resulting from the investment.
Therefore, a simple investment ÷ post-money valuation calculation should not automatically be applied to every financing instrument.
Example
A startup has a:
$12 million pre-money valuation
It raises:
$3 million
Therefore:
Post-money valuation = $12M + $3M = $15M
Under the simplified financing structure:
Investor ownership = $3M ÷ $15M = 20%
Existing shareholders collectively retain 80%.
If the company subsequently raises another round, those ownership percentages can change through further share issuance.
Common misconception
A post-money valuation is the amount of money the company has after fundraising.
No.
A company's cash balance and its post-money valuation are different concepts.
If a company raises $5 million, it may receive $5 million in new cash, but its post-money valuation could be $20 million, $50 million, or another amount depending on the financing terms.
The valuation reflects the agreed value of the company, not the amount of cash in its bank account.
