Pre-Money Valuation

In depth

Pre-money valuation is the number that drives almost every other math step in a financing. Once it is fixed, the share price falls out of it, the new investor's ownership falls out of it, and the founder dilution falls out of it. That is why term-sheet negotiations are really negotiations over the pre-money figure and the size of the option pool, not over the headline post-money number.

The NVCA model term sheet defines the Original Purchase Price on a fully-diluted pre-money basis, which means the share-count denominator includes existing common, preferred, all options (granted and reserved), warrants, SAFEs, and convertible notes, plus the new option pool the round will create. Any time the option pool grows inside the pre-money figure, the cost of that growth lands on existing holders. That is the option pool shuffle, and it is the single most common reason a headline pre-money number flatters founders more than the underlying math supports.

Why it matters

Founders fixate on pre-money because it controls dilution. A $10M post-money round can be a $9.5M pre-money round with a fresh 5% option pool inside the pre-money (founders eat the pool) or a $9M pre-money round with no pool change (founders dilute less in this round but will eat a pool later). Reading just the headline number misses that. LPs and IC members read pre-money paired with option pool size and any convertible overhang to see who is actually paying for the round.

Worked example

A founder owns 100% of a startup, 10,000,000 shares outstanding. The Series Seed term sheet is $2M raised at $8M pre-money, no option pool change.

Post-money         = $8M pre + $2M new   = $10M
Investor ownership = $2M / $10M          = 20.0%
Founder ownership  = $8M / $10M          = 80.0%
Price per share    = $8M / 10,000,000    = $0.80
New shares issued  = $2M / $0.80         = 2,500,000
Shares outstanding after close            = 12,500,000

The founder gave up 20% of the company for $2M. Now run the same round with a 10% post-close option pool created inside the pre-money. The pool is 1,388,889 shares (10% of the 13,888,889 post-close total), priced into the pre-money figure. Effective pre-money for founders is $8M minus the pool's $1.11M value, or $6.89M. Founder ownership drops to roughly 70%, the investor still gets 20%, and the pool sits at 10%. Same headline pre-money, materially worse outcome for the founder.