Post-Money SAFE · Rolling Round
Rolling SAFEs, and what you keep.
Stack one to four post-money SAFEs at different caps and watch the cap table resolve live. Each investor owns investment ÷ cap; you two founders absorb the dilution.
Founder split
How the math works
On a post-money SAFE, an investor's ownership is locked the moment they invest:
ownership = investment ÷ valuation cap. Because the cap is post-money, that percentage
isn't watered down by later SAFEs — so every SAFE simply adds up, and the two founders carry 100% of the
dilution between them. Classic check: $2,350 ÷ $7,000 = 33.57%.
This is a back-of-envelope simulator for rolling SAFEs only. It ignores option-pool top-ups, discounts, MFN clauses, and the priced round itself — talk to a lawyer before you sign anything.