Equity & Ownership
Pre-money versus Post-money
Understand pre-money vs. post-money — the two ways to state a valuation (post = pre + investment) — and why the investor's ownership is investment ÷ post-money, so the same headline number can mean very different real ownership depending on the basis and the option-pool/conversion mechanics.
- Beginner
- 16 min total
- 13 chapters
What decision this helps you make: How pre-money and post-money differ (by exactly the new money) — and why founders must clarify the basis and watch the option pool and converting instruments.
- Related case study: An Equal-Split Partnership That Fractured
- Related data & research: Cap Table Modeling Template
What this topic is
Pre-money is the company's value before the new investment; post-money is its value after — simply pre-money plus the amount invested (post = pre + investment). The investor's ownership percentage is the amount invested ÷ the post-money valuation.
Why it matters
The same headline valuation means different ownership depending on whether it's pre- or post-money — a frequent source of confusion and misaligned deals. And the treatment of the option pool and converting SAFEs/notes shifts who bears the dilution, so the mechanics — not just the headline — decide real ownership.
Who should learn it
Founders raising a priced round, and anyone reading a valuation.
What you will understand
- Understand that post-money = pre-money + investment
- Know the investor's ownership is investment ÷ post-money
- See how the option-pool shuffle shifts dilution onto founders
- Clarify the basis and watch how converting instruments are treated
Prerequisites
Common misconception
"A valuation is a valuation — pre or post-money is just jargon." No — the difference between pre- and post-money is exactly the new money, and it changes the ownership split. The investor's stake = investment ÷ post-money. So "a $10M valuation" means 20% for a $2M investment if it's post-money, but ~17% if it's pre-money (post = $12M). Always clarify the basis. And watch the option pool and converting SAFEs/notes — how they're treated shifts who bears the dilution. The mechanics, not just the headline, decide real ownership.