VC & PE Glossary
What Is Post-Money SAFE?
Updated
Definition
A post-money SAFE is a Y Combinator-style investment contract where the investor's ownership at conversion is calculated against a defined post-money valuation cap—not pre-money fully diluted shares—giving founders clearer dilution math.
Useful for: Founders, Investors
Post-money SAFE is a Simple Agreement for Future Equity that sets conversion economics using a post-money valuation cap, so each SAFE holder’s ownership is determined as a fraction of the post-money company at priced round conversion.
How it works
Under the post-money framework popularized by Y Combinator, a $500K SAFE on a $10M post-money cap targets roughly 5% ownership at conversion (before option pool adjustments in the priced round). Multiple post-money SAFEs sum more predictably than stacked pre-money SAFEs, which historically obscured total dilution until a term sheet arrived.
The priced round still adjusts final numbers—option pool refresh, new investors, and discounts affect outcomes—but founders can spreadsheet seed dilution earlier. Investors accept post-money SAFEs for transparency and faster closes without negotiating full preferred terms upfront.
Why it matters
- Founders: Model total SAFE dilution before signing the fifth seed check; post-money caps aggregate more cleanly than opaque pre-money stacks.
- Investors: Post-money clarity reduces renegotiation fights at Series A when everyone thought they owned different percentages.
Common mistake
Ignoring that the priced round’s option pool increase still dilutes founders on top of SAFE conversion—post-money SAFEs clarify investor stake, not eliminate pool economics.
Related ideas
See pre-money SAFE, priced round, and cap table scenario.
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Common questions
Short answers for founders, LPs, and operators