The short answer
A valuation cap is the maximum valuation at which a SAFE or convertible note converts into shares. If your next priced round values the company above the cap, early investors convert as if the valuation were the cap, so they get more shares for their money as a reward for investing early.
- The cap is a ceiling on the conversion valuation, not a valuation of your company today.
- Above the cap, investors convert at the cap; below it, they convert at the round price (or their discount, if they have one).
- On a post-money SAFE, ownership sold = amount raised ÷ cap.
- A cap that's too high can stall a raise; too low gives away more than you need to.
How it works
A cap only matters at conversion. When you raise a priced round, the SAFE or note converts at the lower of two prices: the price implied by the cap, or the round price (minus any discount). Y Combinator puts it plainly: if the priced round values the company above the cap, the SAFE converts at the cap. On a post-money SAFE, the ownership you sell equals the investment amount divided by the cap.
Worked example (hypothetical)
An angel puts $100,000 into a post-money SAFE with a $5M cap. That's $100,000 ÷ $5,000,000 = 2% of the company, locked in before the next round.
- A seed round later prices the company at $12M pre-money: well above the cap, so the angel converts at the $5M cap and keeps that 2% going in, far more than $100,000 would buy at the seed price.
- If the seed round priced below $5M, the cap wouldn't bite and the angel would convert at the round price.
Common mistakes
- Quoting a cap without saying whether it's pre-money or post-money.
- Setting the cap from a headline you read about a hot startup in another city rather than from your own traction and raise size.
- Forgetting that several SAFEs on different caps add up to more dilution than any one of them suggests.
Why it matters to a pre-seed founder
The cap is usually the one number you negotiate on a SAFE. Y Combinator suggests working backward: decide how much you want to raise and how much ownership you're willing to sell, and the cap follows. Raising $1M while selling 15% implies a post-money cap of about $6.7M. Investors outside the big hubs often compare your cap with local deals, so be ready to explain your number with traction, not hype. See post-money valuation and our SAFE vs priced round guide.
Frequently asked questions
Is a valuation cap the same as a valuation?
No. It's a ceiling on the valuation used when the SAFE or note converts. Your actual valuation is set later, in the priced round.
Can I raise on more than one cap?
Yes. Y Combinator's SAFE page gives an example of raising part of a round on one cap and the rest on a higher one.
What if my priced round is below the cap?
Then the cap doesn't apply, and investors convert at the round price, or at their discount if the SAFE or note has one.