What it means
Every priced funding round rests on a single agreed number for what the business is worth today, before the new cash. That number is rarely produced by a formula, because early-stage companies have little history to model, so it emerges from negotiation informed by revenue, growth rate, market size, comparable deals and how competitive the round is.
It matters because it determines dilution. A higher pre-money valuation means the same amount of money buys a smaller slice of the company, so founders naturally push for a higher figure while investors push the other way.
The mechanics are straightforward once the number is fixed. Price per share equals the pre-money valuation divided by the fully diluted share count before the round, and the new investors receive shares at that price.
The main complication is the option pool shuffle. Investors often require a new or enlarged employee option pool to be created before the money goes in, which means the pool dilutes only the existing shareholders and quietly lowers the founders' effective pre-money valuation.
Convertible instruments add a second complication. Notes and SAFEs from earlier rounds usually convert at the priced round, often at a discount or subject to a valuation cap, and if those converted shares sit in the pre-money share count they reduce the price per share and increase founder dilution.
In practice
Real-world examples
Example 1
A robotics startup with no revenue but a working prototype agrees a $6,000,000 pre-money valuation on a $1,500,000 seed round. The post-money valuation is $7,500,000 and the seed investors own 20%, leaving the three founders with 80% between them.
Example 2
A B2B payments company raising a Series A receives two term sheets, one at a $22,000,000 pre-money valuation with a 15% option pool and one at a $19,000,000 pre-money valuation with no pool requirement. After adjusting for the pool, the lower headline offer turns out to be slightly better for the founders.
Example 3
An agency-turned-software business raises at a $9,000,000 pre-money valuation, but $1,000,000 of convertible notes from two years earlier convert at a 20% discount as part of the round. The effective price per share for the new investor is lower than expected, and the founders' stake ends up four percentage points below their model.
Think of it
Imagine buying a house that needs renovation. The pre-money valuation is the agreed price of the house today, before the buyer puts down cash to build an extension.
Formula
Calculation
Pre-money valuation = post-money valuation - amount invested
Post-money valuation = amount invested / investor ownership %
A consumer subscription business is offered $5,000,000 for 25% of the company.
Post-money valuation = $5,000,000 / 0.25 = $20,000,000
Pre-money valuation = $20,000,000 - $5,000,000 = $15,000,000
Now add the option pool. The investor also requires a 10% post-money option pool created before the round, which is 10% x $20,000,000 = $2,000,000 of value carved out of the existing shareholders.
Effective pre-money valuation = $20,000,000 - $5,000,000 - $2,000,000 = $13,000,000
So although the term sheet says $15,000,000 pre-money, the founders are in economic terms being valued at $13,000,000, a difference of $2,000,000. Negotiating the pool down to 6% would leave 6% x $20,000,000 = $1,200,000 carved out and an effective pre-money valuation of $13,800,000.Case study
Seen in the real world
Larkfield Diagnostics is a fictional laboratory software company created for this illustrative example. It had reached $2,200,000 of annual recurring revenue and was growing at roughly 70% a year when it opened a Series A process.
Two funds bid. One offered $8,000,000 at a $24,000,000 pre-money valuation with a 12% post-money option pool; the other offered $8,000,000 at a $22,000,000 pre-money valuation with a 5% pool. On headline numbers the first looked $2,000,000 better, but the finance director modelled both on a fully diluted basis. Under the first offer the founders and existing shareholders ended up with 62.5% of the company; under the second, with the smaller pool coming out of their side, they ended up with roughly 65%.
The company took the second offer and used the saved dilution to fund a small secondary sale for its earliest employees. This illustrative case makes the general point plainly: pre-money valuation is only the starting point, and the option pool, the convertible notes and the share count decide what the number actually means.
Watch out
Common mistakes
- Treating the headline pre-money valuation as the whole deal, when the option pool, convertible notes and liquidation preferences often matter more to the founders' eventual outcome.
- Comparing two term sheets on pre-money valuation alone without modelling the resulting cap table on a fully diluted basis.
- Chasing the highest possible pre-money valuation, which raises the bar for the next round and increases the risk of a down round later.
Questions
People also ask
How is a pre-money valuation decided for a company with no profits?
Through negotiation informed by revenue and growth rate, the size of the market, the strength of the team, comparable recent deals and how many investors are competing for the round.
Is a higher pre-money valuation always better for founders?
Not always, because it reduces dilution now but sets an expectation the company must grow into, and failing to do so can force a down round on worse terms.
What is the option pool shuffle?
It is the practice of requiring a new employee option pool to be created before the round closes, so the dilution falls on existing shareholders rather than being shared with the incoming investor.