What is Post-Money Valuation?
Post-money valuation is what your company is worth immediately after a new investment closes. It's the pre-money valuation plus the new money coming in. This number directly determines how much of the company the new investor owns.
Why Post-Money Valuation Matters
Post-money sets the ownership math. If an investor puts in $2M at a $10M post-money valuation, they own exactly 20%. No ambiguity. This is why post-money SAFEs became popular: the dilution is known upfront.
It also sets the benchmark for your next round. Your Series A post-money becomes the floor expectation for Series B pre-money. A down round means raising below that number.
Pre-Money vs. Post-Money
The difference is simple but critical:
- Pre-money = what your company is worth before new money enters
- Post-money = pre-money + new investment
When a VC says "we'll invest $5M at $20M," clarify whether that's $20M pre or post. At $20M pre, they own 20% ($5M / $25M post). At $20M post, they own 25% ($5M / $20M post). That 5% gap is massive.
Post-Money Valuation = Pre-Money Valuation + New Investment
Investor Ownership = New Investment ÷ Post-Money Valuation
Your SaaS startup raises a Series Seed:
- Pre-money valuation: $8M
- New investment: $2M
- Post-money valuation: $8M + $2M = $10M
Investor ownership: $2M ÷ $10M = 20%
If you had negotiated a $10M pre-money instead:
- Post-money: $10M + $2M = $12M
- Investor ownership: $2M ÷ $12M = 16.7%
That $2M difference in pre-money saved you 3.3% dilution.