April 11, 2025 • 7 Min Read

A Simple Agreement for Future Equity (SAFE) is an investment contract that lets an investor convert their investment into equity at a future funding round or liquidity event. Early-stage startups typically use them when attracting investors and raising money for their operations.
SAFEs trace their origins to 2013 when the startup incubator Y Combinator developed them to make early-stage funding quicker and easier. They’re generally believed to have been created as an alternative to the convertible note, a financial instrument that also converts into equity.
SAFE notes are generally designed to simplify and expedite the investment process for investors and startups. They borrow the core idea behind convertible notes (i.e., the ability to convert to equity in the future) while discarding their excess elements.
For example, unlike convertible notes, SAFE Notes aren’t debt instruments. Thus, they do not contain provisions for interest rates or maturity dates (i.e., the day the invested money must be returned).
The latter point means that an investor may never get their money back if the agreed-upon trigger for the SAFE note’s conversion into equity never materializes.
Founders who are considering issuing SAFE notes may need to form a C-Corporation before doing so.
C-Corps may also help with investor confidence since they show that your company has a clear ownership structure complete with a cap table, and you pay taxes.
SAFE notes can be issued through Regulation CF crowdfunding or Regulation D private placements. Each option has different legal requirements, investor qualifications, and liquidity restrictions. Be sure to understand which structure applies before investing.
From an investor’s point of view, a SAFE investment can seem risky. Thus, startup founders typically include the following clauses to reward investors who express a willingness to take the risk:
The valuation cap clause sets a maximum valuation (e.g., $3,000,000) that the investor’s investment will convert into equity. It protects the investor’s potential stake in the startup from excessive dilution during future funding rounds.
Including a valuation cap clause in a SAFE note ensures that an investor’s investment gets priced at the lower of it. For example, suppose a SAFE has a $3 million valuation cap and the startup is valued at $10 million at a subsequent funding round. In that case, the investor’s SAFE will convert to equity using the $3 million valuation cap.
The discount rate clause ensures that an investor’s capital injection converts to equity at a discounted rate at a future funding round. Early-stage investors who have a discount rate clause in their SAFE notes may receive shares at a lower price than new investors, depending on the terms.
Startups include it in SAFE notes to incentivize early-stage investments and compensate investors for taking a chance on a risky venture.
Not all SAFEs contain a discount rate or valuation cap clause. The inclusion of either or both depends on what makes the most sense to the parties involved. Thus, there are four types of SAFE notes an investor and startup can contract with:
All four types have their pros and cons for investors and startups. It’s best to seek expert advice (legal and financial) before pushing ahead on the SAFE note variant you’re asked to agree to.
Here are few potential benefits and risks these instruments provide and pose to investors and founders:
SAFE notes offer a potential funding mechanism for early-stage startups and an investment opportunity for individuals willing to accept the associated risks. While they may provide a streamlined and flexible alternative to traditional convertible notes, their structure presents unique considerations for both founders and investors.
Given the potential for dilution, illiquidity, and loss of investment, individuals considering SAFE notes should carefully assess their risk tolerance and seek professional guidance to ensure alignment with their financial goals.
Disclaimer:The information provided in this article is for informational purposes only and should not be considered financial, legal, or investment advice. SAFE notes are complex financial instruments that may not be suitable for all investors. Investing in early-stage companies carries a high risk of loss, including the potential for a total loss of capital. Investors should conduct their own due diligence and consult with qualified financial, tax, and legal professionals before making any investment decisions. The inclusion of any specific terms or examples does not constitute a recommendation or endorsement of any particular investment strategy or security.