SAFE
Use a SAFE when
You are raising with investors who will take a standard post-money SAFE, you want no interest and no maturity, and you can model the stack before you add another one. Faster close. Cleaner if everyone is on the same form.
SAFE vs Convertible Note
SAFE or convertible note: which paper should you sign?
Reviewed August 15, 2026 by Robb
SAFEs and convertible notes both postpone a priced round. They do not behave the same at conversion, and they do not behave the same if the next round is late. Picking the wrong one costs equity or puts a maturity date on the calendar. We treat this as a close decision, not a branding decision.
Convertible note
Use a convertible note when
Investors want debt features — interest and a maturity date — you are dealing with a bridge, or the lead will not sign a SAFE. Notes carry a real conversation if you hit maturity without a priced round. Put that date on the cash calendar.
Interest and maturity are not details
A note accrues and comes due. A SAFE does not. That is why notes still show up on bridges and with investors who want a debt wrapper. It is also why a note you forgot about becomes a negotiation at the worst time. If you sign a maturity, we put it next to payroll in the forecast.
The dilution trap is the stack
Multiple post-money SAFEs at different caps dilute founders more than a single instrument suggests. Notes convert with their own math — cap, discount, accrued interest. Mixing both in one raise is possible and usually sloppy. Model the fully converted table, including the option pool, before you sign the third instrument of any kind.
Pick one form per raise when you can
One instrument, one cap story, one conversion path. If you cannot get there, write down why the exception exists so the next priced round does not become an archaeology project. CFO For Rent will sit in that modeling work with you before the paper goes out.
Frequently asked questions
Do investors still use notes?
Yes — especially outside a standard US angel SAFE process, and on bridges. Ask what they will actually sign before you draft.
Can I mix SAFEs and notes in one round?
You can. It complicates conversion math and the story at the next close. Pick one instrument per raise when possible.
What happens if a note matures?
You negotiate — extend, convert, or repay. None of those are free. Treat maturity as a real date, not a footnote.