The Standard That Isn't Safe to Sign Blindly
What every founder should understand before signing their first SAFE.
A SAFE (Simple Agreement for Future Equity) lets a startup accept investor capital now and defer valuation until a future priced round, with two key terms — the valuation cap and the discount — controlling how much equity the investor receives at conversion. According to Carta’s Q1 2025 data, SAFEs accounted for 90% of all pre-seed rounds on their platform, with post-money SAFEs now the industry standard. Startup and venture capital attorney Jake Denham, writing at the Denham Dispatch, argues that the instrument isn’t the problem — founders signing without understanding the difference between pre-money and post-money SAFEs is.
I. The Scene
“But the SAFE I agreed to was ‘standard.’”
The founder on the phone said this to me, frustrated, as we went over their company’s new cap table (the spreadsheet that shows who owns what percentage of the company) after their first priced round.
They owned 52% of their company.
They expected to own 70%.
The worst part? This was preventable. The founder wasn’t cheated. They signed something they didn’t understand before having any counsel review it. The result was dilution (a reduction in the founder’s ownership percentage as new shares are issued) they never saw coming.
This happens all the time — not because SAFEs are predatory, but because “standard” has become a reason for founders to say: “I don’t need to read this.”
According to Carta, SAFEs made up 90% of all pre-seed (the earliest stage of fundraising, usually before a company has significant revenue or traction) deals on their platform in Q1 2025. That ubiquity has a side effect: founders treat the document like a formality instead of a binding legal instrument.
This piece exists to fix that.
II. How a SAFE Actually Works
Your company needs money. But your valuation (what the market says your company is worth) is still up in the air, because investors simply do not have enough data. A SAFE solves this by letting your company accept capital now and defer the valuation question until later, when there’s real data.
Here’s the mechanic:
An investor gives your company money.
The investor doesn’t get equity immediately. They get the right to equity in the future.
That right converts into actual equity (meaning the investor’s SAFE turns into real shares in the company) when your company does a priced round — a fundraising event where the company and its investors agree on a specific valuation and issue shares at a set price per share.
Two terms control how much equity the SAFE gets: the cap and the discount.
The valuation cap sets a ceiling on the price the SAFE investor pays when converting. If your company’s valuation at the priced round exceeds the cap, the SAFE investor converts at the lower cap price — meaning they get more equity for their original dollar, and the investor doesn’t get punished for the company being even more successful than either the founder or investor dreamed of at its current stage.
The discount gives the SAFE investor a percentage reduction on the price per share (the dollar amount assigned to each individual share of stock) at conversion. If the discount is 20%, the SAFE investor pays 80% of what new investors in the priced round pay.
Both terms exist because early investors took a bet on a founder before the company had “real” numbers. The trade-off is they get a better price when the numbers arrive.
Three quick clarifications.
A SAFE is not a loan — no maturity date (no deadline by which the money must be repaid), no interest, no repayment schedule.
It’s not an immediate grant of equity — the name says it: Simple Agreement for Future Equity.
It is not a handshake deal. Just because the document is templated doesn’t mean it isn’t a binding legal obligation.
So, now that we’ve got part of the basics covered, there are two more critical terms that a founder or investor must understand before signing a SAFE.
III. Pre-Money vs. Post-Money — And Why It Matters
There are two versions of the SAFE: pre-money and post-money.
The difference comes down to one question: does the valuation cap include the SAFE money or not?
A pre-money SAFE sets the cap before the new investment is counted. The investor’s ownership is calculated on top of the cap, which means the founder’s dilution is harder to predict, especially when multiple SAFEs have to be taken into account.
A post-money SAFE — now the industry standard — sets the cap after the SAFE money is included. The math is cleaner. A founder can look at the cap and the investment amount and calculate exactly how much ownership the SAFE investor will get at conversion.
A quick example: say an investor puts in $500K on a SAFE with a $5M cap. Under a post-money SAFE, that investor gets 10% at conversion — $500K divided by $5M. Clean. Under a pre-money SAFE with the same terms, the investor’s ownership depends on how much total capital comes in at the priced round, making the founder’s final percentage harder to pin down until the round closes.
But a founder who doesn’t know which version they signed is flying blind — and that’s one way you end up owning 52% when you expected 70%.
We break down the full math — what the numbers look like side by side across a complete round — in Part 2.
IV. The Skeptic’s Case (And Why It’s Wrong)
Some argue that because the SAFE has become “standard” and “easy,” it’s no longer founder-friendly — that it’s a vehicle for investors to pull a fast one, and emerging companies should avoid it entirely.
However, the SAFE was built to be founder-friendly.
Before the SAFE, startups raised early capital through convertible notes — instruments with interest rates and maturity dates. Companies that couldn’t cover their bills were expected to project whether they could repay the note. The SAFE eliminated those burdens. That’s not a trap. That’s a better tool.
The skeptics are right about one thing: standardization has made founders lazy about reading the document. But the answer isn’t to abandon the instrument. The answer is to read it.
V. Two Things Before You Sign
If you decide to raise on a SAFE, do two things.
First, call counsel before signing anything.
Second, be able to answer two questions:
What are my cap and discount?
Is this pre-money or post-money?
If you can answer both, you’re on solid footing. If you can’t, you’re the founder from the opening of this piece.
The Denham Dispatch covers the structural decisions underneath venture fundraising — the ones that don’t show up on a pitch deck but shape the outcome anyway. If that’s useful, subscribe.
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