What is a SAFE? A SAFE (Simple Agreement for Future Equity) is a startup financing instrument that allows investors to provide funding in exchange for the right to receive equity in a future financing round. Popular among early-stage startups, a SAFE offers a simpler and faster alternative to traditional equity financing or convertible notes. At AngelSchool, founders and investors can learn how SAFEs work, their benefits, and how they are commonly used in venture capital fundraising.