A Simple Agreement for Future Equity: an IOU for preferred stock that is neither debt nor equity, carries no interest or maturity date, and converts into the next priced round; the default early-stage instrument for raises under roughly $5M.

Why does SAFE matter to a founder?

A SAFE round costs a few thousand dollars in legal fees and closes in days; a priced round costs on the order of $100–150K and takes a month or more. That cost gap is why SAFEs dominate below about $5M. The risk is that SAFE dilution is invisible until conversion, so founders who stack several SAFEs at different caps can discover they have sold 35–40% of the company before any priced round happens.

What are the common mistakes with SAFE?

Stacking SAFEs across multiple caps without modeling the combined dilution at conversion. Leaving an oversized unused option pool, which inflates the share count every SAFE converts against. Misreading the discount terminology: a 90% discount rate in SAFE language means a 10% discount. Paying advisors or contractors in SAFEs, which creates taxable income with no cash to pay it.

SAFE

CONCEPT · LAST REVIEWED 2026-09 · SOURCED FROM 3 SESSIONS, FEB–MAY 2026

A SAFE is an IOU for preferred stock. The investor gives you money now; you promise them shares later, when you close a priced round, at a price set by the SAFE’s valuation cap or discount. Until then the holder has no stockholder rights, earns no interest, and faces no maturity date. It is a contract, not debt and not equity. When conversion happens, SAFE holders get the same preferred stock as the new investors, with the same liquidation preference.

Why it matters

The instrument choice is mostly a cost decision at the early stage.

From the room

“You’re now paying $150K to get a million dollars into the company… probably not the best use of funds.”

— Partner at a top-tier venture law firm, ~19 years of practice, on priced rounds · session, Feb 2026

A priced round means 200–250 pages of documents, four-plus weeks, and the company paying both sides’ counsel. A SAFE round is the standard YC form, board approval, and an SEC Form D filing. The calculus flips around a $3–5M raise, when lead investors want real preferred stock, information rights, and a board seat.

The trap is that SAFEs feel free because the dilution is deferred. $1M on a $10M post-money cap is about 10% dilution; $3M at the same cap is 30%. Founders who stack $5–6M of SAFEs across $10M, $12M, and $15M caps can wake up having sold 35–40% of the company.

Where founders get it wrong

Stacking SAFEs without modeling combined dilution.
Leaving a fat unused option pool in the conversion denominator.
Misreading the discount terminology.
Paying people in SAFEs.

Numbers from the room

Figure	Value
SAFE round legal cost	A few thousand dollars
Priced round legal cost (company pays both sides)	~$100–150K
Raise size where a priced round makes sense	~$3–5M
Pre-seed median post-money cap (Carta data, cited May 2026)	~$10M

Go deeper

SAFEs vs. notes vs. priced rounds is the full decision.
Related concepts: Valuation cap, Liquidation preference.