SAFE Note

A Simple Agreement for Future Equity - an investment instrument that converts to equity at a future priced round.

Definition

SAFE (Simple Agreement for Future Equity) was created by Y Combinator in 2013 as a simpler alternative to convertible notes. Unlike convertible notes, SAFEs have no interest rate, no maturity date, and are not debt. They're a promise to give the investor equity at a future priced round, subject to a valuation cap and/or discount. Post-money SAFEs (YC's standard since 2018) make dilution more transparent.

SAFEs are now the most common early-stage investment instrument in Silicon Valley. They close faster (often in days), have lower legal costs ($0-$2K vs. $5K-$15K for priced rounds), and are founder-friendly.

Why it matters for founders

SAFEs let you raise money quickly with minimal legal friction. But founders must understand how multiple SAFEs stack and dilute. A common mistake is raising too much on SAFEs without understanding the cumulative dilution when they all convert.

Example

A YC startup raises $500K on a post-money SAFE with a $5M cap. This means the investors will own 10% ($500K / $5M) when the SAFE converts, regardless of the next round's valuation. If the startup raised at $20M, the SAFE investors get shares as if they invested at $5M.

How Foundra helps

Foundra's structured validation helps you raise on SAFEs with confidence, because you can demonstrate clear progress milestones that justify your valuation cap.

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