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SAFE (Simple Agreement for Future Equity)

A SAFE (Simple Agreement for Future Equity) is a financing instrument, introduced by Y Combinator in 2013, that lets an investor give a startup cash now in exchange for the right to receive equity later, when the company raises a priced round. It isn't debt: there's no interest rate and no maturity date.

What is a SAFE Note? How Startup Convertible Financing Works

A SAFE converts into equity at the next priced round, usually the Series A, based on two terms negotiated up front: Valuation cap: the maximum valuation at which the SAFE converts, protecting early investors from being diluted at a much higher price later. Discount rate: a percentage off the priced round's valuation, typically 10-20%, giving the SAFE holder a better price than new investors. Example: An angel invests $200,000 on a SAFE with a $5 million cap. A year later the company raises a Series A priced at a $10 million valuation. Instead of converting at $10 million, the SAFE converts at the $5 million cap, so the angel ends up owning roughly twice the equity a new investor at the priced round would get for the same check. Why founders use SAFEs: speed and simplicity. A SAFE is a one to two page document with no valuation negotiation and no board seat, and can close in days. Priced equity rounds require agreeing on a valuation and drafting a full stock purchase agreement, which takes weeks of legal work. Watch for SAFE stacking: raising multiple SAFEs at different caps before a priced round can create more dilution than founders expect, since every SAFE converts at once. Track the fully diluted cap table as you stack SAFEs, not just the cash raised.

Examples

A pre-seed startup raises $500,000 across three SAFEs at caps of $4M, $5M, and $6M. When the Series A prices at $12M, all three convert at their respective caps, meaning the founders have given up more equity than a single $500k SAFE at one cap would have cost.
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Related Terms

Angel Investor

An angel investor is an individual who invests their own money in early-stage startups in exchange for equity. Angels typically write $10k-$100k checks and invest before VCs enter.

Pre-Seed

Pre-seed is the earliest funding round before seed, typically $50k-$500k. Founders raise from angels, friends, family, or micro VCs to build an MVP and validate the idea before raising institutional seed.

Seed Funding

The first significant round of venture capital funding for a startup, typically used to validate product-market fit and build the initial team. Seed rounds usually range from $500k to $3M.

VC (Venture Capital)

Venture capital (VC) is money that professional investment firms put into high-growth, high-risk startups in exchange for equity. Firms raise capital from limited partners such as pension funds and endowments, then invest it across a portfolio of startups, expecting most to fail and a handful to generate the fund's returns.

A/B Testing

A/B testing (split testing) means showing two versions of something to different users and measuring which performs better. Version A vs. Version B. Data wins, opinions lose.

Account-Based Selling

Account-based selling is a sales strategy that targets a curated list of specific named companies individually, tailoring outreach and pitch to each one, instead of casting a wide net across anyone who might vaguely fit.

View all terms