Post-money SAFE calculator
The post-money SAFE (the YC standard) is how most pre-seed rounds happen. Enter the amount and the post-money cap and we tell you how much you dilute: the investor gets amount ÷ cap, and that dilution (plus the option pool) falls on you.
Founder dilutioni
20%
Investor stake
10%
Founders keep
80%
✅Standard dilution for a single SAFE at this cap.
Post-money SAFE (the YC standard): the investor gets amount ÷ cap of the company, and the dilution falls on you, not on other SAFEs. Multiple SAFEs stack — see your full dilution across rounds in the model.
See your dilution across SAFEs and a priced round.
The full model stacks multiple SAFEs and a round, with your real effective dilution and the cap table.
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Last updated: June 25, 2026. For information only — not financial advice.