Pre-Money and Post-Money Valuation:
For startups and high-growth companies, raising capital (funding rounds) or completing capital increases is a common lever to accelerate product development, sales execution, and expansion.
However, it is also one of the areas where misunderstandings most frequently arise, because pre-money and post-moneyare not just “two numbers”: they determine the price per share/unit, the ownership percentage the investor is buying, the dilution borne by existing shareholders, and—ultimately—the architecture of the capitalization table (cap table) through which future economic rights and control are distributed.
In private markets, price is not “discovered” the way it is in public markets; it is negotiated. That is why understanding these metrics (and what is included in them) is essential to keep the transaction transparent and to avoid information asymmetries that later create friction in the shareholders’ agreement or in subsequent rounds.
What is pre-money valuation?
Pre-money valuation is the value of a company before receiving external investment. In other words, it refers to the value investors assign to the company based on its assets, capabilities, track record, team, market, and growth potential—excluding the new capital that will be injected in the funding round.
This figure reflects the price investors are willing to pay for the company in its current state, considering all the factors that define its value at that point in time. Pre-money valuation is therefore critical to determining the company’s value before existing shareholders are diluted by the new investment.
Pre-money is the number that reflects how much the business is worth based on its assets, team, technology, traction, and potential—without adding the cash that enters in the round.
In practice, pre-money serves three purposes:
- Anchors pricing negotiations: if new shares/units are issued, the per-share (or per-unit) price is derived from the pre-money valuation divided by the number of securities on which the calculation is being made.
- Organizes the value narrative: in early stages, where there is no EBITDA or cash flow is negative, valuation is almost always a combination of milestones (product, market, growth) and reasonable expectations of scalability.
- Defines the “pre-round split”: it is the starting point to measure how much founders and existing shareholders are diluted.
A key nuance: “pre-money” does not always mean the same thing unless you define the denominator
The typical mistake is not only confusing pre with post, but failing to clarify whether the calculation is based on “issued/outstanding” equity or on a fully diluted basis. In a professional analysis, “fully diluted” generally includes (depending on the case):
- Shares/units outstanding,
- The option pool (employee equity reserve) if it already exists or if it is agreed to be created,
- Convertible instruments (convertible notes, SAFEs, warrants) if conversion is economically likely.
This matters because the pre-money valuation can remain the same on paper, while the founders’ true ownership changes materially if, for example, the investor requires an option pool to be created (or increased) “before” their investment.
Valuation approaches to support a pre-money valuation in startups
- Comparables / multiples: useful when there are market references (SaaS by ARR, marketplaces by GMV/revenue, etc.), with high sensitivity to revenue quality and retention.
- Venture Capital Method: starts from a reasonable exit scenario, applies an exit multiple, and discounts at a target IRR (higher in seed than in growth).
- In very early stages, negotiation tends to rely more on milestones (team, prototype, early traction, IP) than on a traditional DCF.
Practical example: the impact of the option pool on “effective pre-money”
Assume:
- Agreed pre-money: €8.0M
- Investment: €2.0M
- Required option pool: 10% (to hire talent)
Scenario 1 (pool created “after” the investment): the pool dilutes everyone proportionally after the investor comes in.
Scenario 2 (pool created “before” the investment, typical in VC): the pool is created within the pre-money, and dilution hits existing shareholders first. Result: the nominal pre-money is the same, but founders end up owning less.
The takeaway is simple: when you negotiate pre-money, you must also negotiate when and how the option pool is accounted for and which instruments are included in the “fully diluted” definition. Otherwise, two parties can “agree” on €8M… while not buying/selling the same ownership percentage.
What is post-money valuation?
Post-money valuation refers to the total value of the company after receiving the investment. This value includes both the pre-money valuation and the new capital contributed by investors in the funding round. Put differently, post-moneyreflects the company’s value once the new capital has been added—and it is this figure that is used to calculate the ownership percentage each new shareholder will hold.
Post-money is the value of the company after incorporating the new capital. The core formula is:
Post-money = Pre-money + Investment
Post-money is the figure that allows you to directly compute the new investor’s ownership percentage (if there are no other adjustments):
% investor = Investment / Post-money
Example:
- Pre-money value: €100M
- Investment: €50M
- Post-money value: €150M
Investor ownership: 50/150 = 33.33%
The most common “trap” is calculating the percentage on the pre-money: the frequent mistake is to assume the investor owns 50% by contributing 50 into 100. That ignores the fact that new capital increases the company’s total value and, therefore, the correct denominator for the final ownership percentage is the post-money valuation.
Post-money vs. “economic post-money” (when convertibles are involved)
In real-world rounds, final ownership may not be so linear because several elements come into play:
- SAFE / convertible notes: convert into equity at the next priced round, typically with a discount and/or a valuation cap.
- Option pool: if the pool is increased on a “pre-money” basis, effective dilution changes.
- Share classes and rights: liquidation preferences, participation, etc. (they may not change the nominal percentage, but they do change the economic split in an exit).
A particularly useful point to prevent surprises: in SAFEs, the market shifted toward post-money forms because they make it more transparent how much ownership is being sold (especially when multiple SAFEs are issued). Even so, raising “too much” SAFE capital at low caps can lead to more cumulative dilution than founders intuitively expect.
Risk of overly high valuations: down rounds and anti-dilution
An aggressive pre-money valuation may “sell less equity” today, but it also creates an implicit requirement: the startup must grow enough to justify a subsequent round at a higher price. If it does not, a down round can occur, typically with two effects:
- Reputational impact and greater difficulty attracting new capital,
- Potential activation of anti-dilution clauses (common in preferred equity) that adjust the prior investor’s conversion price.
Conceptually, anti-dilution can be:
- Full ratchet (harsher for founders), or
- Weighted average (more balanced and more common).
There is no need to go into formulas in an introductory article, but the key message is: valuation is not only “how much it’s worth,” but also what happens if market conditions change.
Conclusion on pre-money and post-money valuation:
Understanding dilution—and the difference between pre-money and post-money valuation—is not only crucial for accurately calculating ownership stakes, but also for properly managing founder and shareholder dilution across successive funding rounds. A correct understanding of these concepts is essential to avoid common mistakes, enable successful negotiations, and ensure all parties involved have realistic expectations about value and ownership after an initial (or subsequent) funding round.
The difference between a healthy round and a problematic one often lies in the “details” that sit behind the numbers: fully diluted definitions, option pools, convertibles, and protection mechanisms in adverse scenarios.
Rules of thumb:
- Model the cap table before signing (scenarios with/without a pool, with/without convertibles, and with assumptions for future rounds).
- Clarify definitions: what is included in the denominator (current shares vs. fully diluted) and when the option pool is created.
- Avoid dilution surprises, especially if you use SAFEs/convertible notes in successive tranches.
- Balance ambition and sustainability: a “high” valuation is not always better if it increases down-round risk or leads to harsher terms.
In Spain, Ley 28/2022 (the Startup Law) has reinforced the use of incentives (especially to attract talent through equity) and introduced a certification framework to access benefits, which makes it even more advisable to professionalize funding-round planning and capital structure.
If you are considering raising capital through one (or multiple) funding rounds or a capital increase, or if you need financial advisory support, Maraz Corporate Finance can help.
Javier de Rojas Roca de Togores
Partner – Maraz Corporate Finance
