Just closed our pre-seed round and spent way too much time on this exact question, so I want to give a practical breakdown for anyone else deciding between a SAFE and a convertible note.
SAFE (Simple Agreement for Future Equity):
- No maturity date, so there is no ticking clock forcing you to raise again or pay investors back
- No interest accrual, which keeps the math simpler
- Standard Y Combinator template is free and widely accepted by angel investors
- Converts to equity only when a priced round happens
- Most common for very early-stage (pre-seed and seed) in the tech startup world
Convertible Note:
- It is actual debt with a maturity date (typically 18-24 months) and interest rate (usually 4-8 percent)
- If you do not raise a priced round before maturity, investors can demand repayment -- this is the big risk for founders
- Gives investors slightly more protection, which is why some angel groups and institutional investors prefer them
- More common outside Silicon Valley and for later-stage bridge rounds
Both instruments typically include a valuation cap and a discount rate (usually 15-25 percent). The valuation cap sets the maximum price at which the instrument converts, protecting early investors if the company valuation shoots up before the priced round.
We ultimately went with a post-money SAFE at a 6M cap with no discount. Our attorney said this is the cleanest structure for a first raise and avoids a lot of the negotiation complexity around notes. The key thing with post-money SAFEs is that dilution is much more predictable for everyone involved.
One caveat: if your investors are more traditional (family offices, non-tech angels), they might push for a note because they are more comfortable with debt instruments. In that case, do not fight it -- just make sure the maturity date is long enough (24 months minimum) and negotiate a friendly conversion clause at maturity rather than a hard repayment obligation.