Pre-money valuation is the enterprise value assigned to a company immediately before a primary investment closes—excluding the new money about to enter the cap table.

How it works

Standard relationship: post-money valuation equals pre-money plus new primary investment. A $2M investment at $8M pre-money implies $10M post-money and roughly 20% new investor ownership before pool nuances. Term sheets specify whether option pool expansions count in pre-money calculations—a critical detail for founders.

Prior round pre-money comps inform negotiation, along with traction metrics and market conditions. Down rounds reset pre-money below the last preferred round’s effective valuation, activating protective provisions for some investors.

Why it matters

• Founders: Higher pre-money reduces dilution for the same dollars raised—but only if structure matches; pool shuffle can offset headline wins.
• Investors: Entry pre-money sets required exit size for target returns; paying up shifts power-law math unfavorably if growth slows.

Common mistake

Comparing pre-money valuations across rounds without normalizing for revenue, pool size, or participating preferred terms—headline numbers mislead.

Related ideas

See post-money valuation, price round math, and benchmark rounds.