Note maturity

A SAFE never comes due. A note does. Maturity is the date the loan is payable if it has not converted. Founders sometimes treat it as "we'll raise before then." Markets freeze. Plan runway that clears maturity with margin, or negotiate an automatic extension tied to good-faith fundraising.

The big idea

A balloon loan on a house you plan to refinance is the picture. If rates (or your metrics) die, the balloon is still due. The analogy breaks because most young companies cannot repay in cash — so maturity becomes leverage, not a wire.

At maturity with no priced round, typical outcomes:

1. Extend (often with a sweetener: higher cap break, bigger discount, or a warrant).
2. Convert into equity at a negotiated price, or into a SAFE-like instrument.
3. Repay principal + interest in cash (rare for cash-poor startups; can force a fire sale or insider bridge).
4. Default — investor leverage rises sharply; relationships and future fundraising suffer.

Walking through it

A $1.2M note stack matures in four months. Cash is $900k. Burn is $150k/month. You will be empty at about the due date. Options: cut burn and extend; convert into a priced round or a new SAFE; ask insiders for a bridge; or hope. Hope is how default language shows up in the next term sheet.

Treat upcoming maturities as hard calendar risk, same as runway. Ask for a schedule of all convertibles: principal, rate, maturity, cap, discount, qualified-financing threshold, side letters. Model conversion with interest into the next priced round before you quote ownership. Mismatched note forms across investors are a cleanup tax — standardize when you can.

Common mistakes

• Dating maturity to "when we planned to raise." Date it past a realistic process plus slack.
• Mixing notes and SAFEs without a waterfall. In a soft landing, debt is ahead of SAFE holders.
• Ignoring default as a relationship event. Future leads read how the last due date went.

Check yourself

Why is maturity the main founder risk versus a standard YC SAFE?

A SAFE does not come due. A note can demand repayment, an extension fight, or a default.

You have $900k cash, $150k monthly burn, and notes due in four months. What is the first number to face?

You run out of cash at about the due date. Extension, conversion or a cut in burn has to start now.

Key takeaways

• Maturity is a real due date. Plan runway past it.
• Outcomes are extend, convert, repay or default — not "we'll see."
• Notes fit bridges and seniority needs; SAFEs fit a standard US seed with no clock.

Further learning

YC — SAFE vs convertible note vs priced roundHow YC's SAFE compares to convertible notes and priced rounds — interest, maturity, valuation, legal cost, and ownership clarity, and when to use each.Y Combinator

Down rounds and bridges