SAFE Investment Calculator

Simple Agreement for Future Equity โ€” angel investor equity calculator

What is this? A SAFE (Simple Agreement for Future Equity) is a popular startup investment instrument used by Y Combinator and most seed-stage investors. This calculator shows what equity stake you receive based on the valuation cap and/or discount rate, and what your investment is worth at the next funding round.

Who it's for: Angel investors evaluating SAFE terms, startup founders understanding dilution, or anyone considering investing in a SAFE-note startup.
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Your SAFE Investment
Next Funding Round
Your Ownership at Next Round
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calculating...
Equity Calculation Details
Price per share (cap basis)โ€”
Price per share (discount basis)โ€”
Effective price per shareโ€”
Your SAFE sharesโ€”
Total shares outstanding (incl. you)โ€”
Investment Performance
Investment Multiple
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Cap Applies?
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Discount Applies?
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At Next Round
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If Exit at Valuation
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MOIC
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How SAFE Pricing Works

SAFE vs Discount: A SAFE investor gets the BETTER of either (a) the valuation cap price, or (b) the discount price. The cap sets a maximum valuation โ€” if the next round is at a higher valuation, the cap price (cap/shares) gives more shares. If the next round is at a lower valuation, the discount gives more shares.

Post-Money SAFE: Most modern SAFEs (YC standard since 2018) are post-money, meaning the cap is calculated against the post-money valuation โ€” giving investors certainty about maximum dilution.

Tools for Angel Investors

Track your startup portfolio, manage SAFE agreements, and calculate returns with these platforms:

Carta โ€” Cap Table Management โ†’
Recommended Tools

From equity management to incorporation, these tools help founders navigate SAFEs, equity grants, and incorporation.

Gusto Equity Guide โ†’ Stripe Atlas โ€” Incorporate โ†’ ๐Ÿ  DoorLoop โ€” Property Management Software ($250/qualified referral)

FTC Disclosure: This link is an affiliate link. We may earn a commission at no extra cost to you if you sign up through this link. This compensation helps support this free calculator.

For educational purposes. SAFE terms vary. Consult a securities attorney before making any investment. This calculator uses simplified assumptions and does not account for option pools, liquidation preferences, or MFN clauses.

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