In startup finance, what does the investment instrument SAFE stand for?

In startup finance, SAFE stands for Simple Agreement for Future Equity.

Y Combinator introduced the SAFE in 2013 as a simpler alternative to convertible notes for early-stage fundraising. An investor provides money to a startup, and the investment later converts into equity when a priced funding round occurs or another triggering event happens.

A SAFE is not the same as immediate stock ownership and usually does not function like a conventional loan. Unlike a convertible note, it generally has no maturity date and no interest rate. Its terms may include a valuation cap, a discount, or both.

The instrument became widely used in startup funding because founders could close investments with less negotiation and paperwork. Different SAFE versions exist, so the precise economic result depends on the document’s terms and the company’s later financing.