Pre-Money SAFE

TL;DR

The original (2013) SAFE variant where the valuation cap was computed on a pre-money basis, sharing dilution across SAFE holders.

In a pre-money SAFE, the cap refers to the company's pre-money valuation. When multiple pre-money SAFEs convert at the same priced round, they collectively dilute the founders, but they also dilute each other — which means an early SAFE holder's final ownership percentage shrinks as more SAFEs are added.

The pre-money SAFE was retired in 2018 in favor of the post-money SAFE, but a meaningful number of legacy SAFEs are still on cap tables and need to be modeled correctly.

Formula

Pre-Money SAFE Ownership % ≈ SAFE Investment ÷ (Cap + Sum of Other Pre-Money SAFEs)

• SAFE Investment — Dollars invested via the pre-money SAFE
• Cap — Pre-money valuation cap
• Other Pre-Money SAFEs — All other pre-money SAFEs that convert at the same priced round (each dilutes the others)

Unlike post-money SAFEs, pre-money SAFEs dilute each other — stack 4 pre-money SAFEs and you can give up materially more than expected.

Worked example

$1M pre-money SAFE at $10M cap. If three other $1M pre-money SAFEs convert at the same time, the cap effectively expands and each SAFE holder ends up with ~8.3% (not 10%) — a common founder surprise.

Common pitfalls

• Modeling pre-money SAFEs as if they were post-money.
• Issuing new pre-money SAFEs in 2024+ when the post-money form is standard.
• Forgetting that pre-money SAFE ownership shrinks as more SAFEs stack.

When this shows up in a pitch deck

Rarely surfaces in deck content; matters for cap-table modeling and investor diligence.

Related terms

• SAFE — Y Combinator's Simple Agreement for Future Equity — a contract that gives an investor the right to equity in a future priced round, with no debt or interest.
• Post-Money SAFE — The 2018 YC SAFE variant where the valuation cap is computed on a post-money basis, making the investor's ownership share predictable.
• Valuation Cap — The maximum company valuation at which a SAFE or convertible note will convert into equity, protecting early investors from dilution at high prices.
• Dilution — The reduction in an existing shareholder's ownership percentage caused by issuing new shares in a financing or an option grant.
• Pre-Money Valuation — The agreed-upon value of the company immediately before a new investment round closes — pre-money + new money = post-money.

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