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SAFE Note

A Simple Agreement for Future Equity — a startup financing instrument that converts to equity at a future priced round, without accruing interest or setting a maturity date.

A Simple Agreement for Future Equity (SAFE) is a financing instrument developed by Y Combinator in 2013 that allows startups to raise capital from investors without immediately establishing a share price or company valuation. The investor provides cash now in exchange for the right to receive equity in a future priced funding round, typically at a discount and/or valuation cap relative to that round.

SAFEs have largely replaced convertible notes for pre-seed and seed-stage fundraising because they are simpler (no interest rate, no maturity date, no debt instrument), faster to execute (often just 2–3 pages), and lower cost (minimal legal fees). Y Combinator provides standardized SAFE templates that have become industry standard, dramatically reducing negotiation.

The two key economic terms in a SAFE are: the Valuation Cap — the maximum company valuation at which the SAFE converts to equity (protecting early investors from excessive dilution if the company's valuation skyrockets); and the Discount Rate — typically 10–20%, allowing SAFE holders to convert at a lower price than the priced round investors pay.

At conversion (triggered by a priced equity round, typically Series A), the SAFE converts to preferred stock at whichever provides more shares: the cap or the discount. Post-Money SAFEs (the current Y Combinator standard) calculate the ownership percentage at signing based on the cap — giving investors certainty about their minimum ownership before the priced round dilutes them.

SAFEs are not debt — they appear as neither debt nor equity on the balance sheet until conversion (typically classified as a liability or mezzanine equity). This means they don't accrue interest and have no default risk, though they do create dilution at conversion that founders must model carefully.

FAQs

What is the difference between a pre-money SAFE and a post-money SAFE?

A post-money SAFE (Y Combinator standard since 2018) calculates the investor's ownership percentage at signing: investment ÷ valuation cap = ownership. This gives investors and founders certainty about dilution. A pre-money SAFE's final ownership depends on how many other SAFEs and option pool expansion are included before conversion — making dilution harder to predict.

What triggers SAFE conversion?

Standard SAFEs convert upon: an equity financing round above a minimum size (typically $1M+); a liquidity event (acquisition or IPO); or dissolution of the company. Some SAFEs also allow conversion at the investor's election after a specified period. SAFEs do not have a maturity date and don't automatically convert or default if no priced round occurs.

How does a SAFE valuation cap affect founders?

The cap limits the price at which the SAFE converts, so if a startup's Series A valuation is higher than the cap, SAFE investors convert at the cap price (getting more shares than new investors for the same dollar amount). This dilutes founders and new investors. Founders should model multiple SAFE scenarios to understand dilution before committing to a cap.

Related Terms

Tools for this concept

AngelList Equity encompasses the equity management and investment infrastructure services that AngelList provides to startups, investors, and syndicates within its sprawling startup ecosystem. AngelList's position as the largest online platform for startup-investor connections gives its equity services unmatched distribution — millions of founders and investors interact through AngelList, making its equity infrastructure an natural extension of those relationships. The Stack product provides startups with US company formation, initial cap table setup, SAFE issuance, and banking in a bundled startup-in-a-box package. AngelList's SPV (Special Purpose Vehicle) service enables angel investors to pool capital and invest as a single vehicle into startups, with AngelList handling fund administration, K-1 generation, and regulatory compliance for each SPV. Rolling Funds allow investors to raise capital on a quarterly subscription basis, democratizing venture fund management for emerging managers. The equity management tools track option grants, vesting schedules, and cap table updates through the AngelList platform with integration into AngelList's broader investor and talent marketplaces. Carry tracking and distribution management handle the economics of SPV and fund investments. For founders deeply embedded in the AngelList ecosystem — using it for recruiting talent or raising angel rounds through syndicates — the equity management services create natural integration. For investors running multiple SPVs or building an emerging manager brand, AngelList's fund infrastructure eliminates significant operational complexity.

Gust is a startup investment platform that connects early-stage founders with angel investors, accelerators, and startup programs, providing equity management tools alongside the funding relationship infrastructure. Originally launched as the standard platform for organized angel investing globally, Gust has expanded to offer cap table management, online SAFE and note issuance, and equity documentation tools for pre-seed and seed-stage startups. The platform is used by thousands of angel groups, accelerators, and incubators globally as their standard application, evaluation, and portfolio management system — meaning many accelerator applications are submitted and processed through Gust by default. For startups, Gust provides a managed company profile that serves as a pitching document for investors browsing the platform. Cap table management covers basic equity tracking with support for SAFEs, convertible notes, and common stock. Online closing tools enable remote issuance of SAFEs and convertible instruments with electronic signature, reducing legal costs for standard seed financing documents. The launch package provides access to state-specific formation documents and standard legal templates. Gust's investor portal gives angels a portfolio management view across all their Gust-connected investments. While Gust lacks the equity management depth of Carta or Pulley for post-seed companies, it serves a specific and valuable role as the standard platform for the angel investing ecosystem — making it a natural first equity management tool for companies raising their first institutional money from angel groups and accelerator programs.

Qapita is an equity management and fintech platform serving startups and growth companies across Southeast Asia and India, providing cap table management, employee equity administration, and secondary share liquidity services adapted for regional markets. The platform covers equity management across Singapore, India, Vietnam, Malaysia, Indonesia, and other SEA markets, with jurisdiction-specific compliance for each country's company law, tax regulations, and securities requirements. Cap table management tracks equity across multiple share classes, convertible instruments, and option pools with real-time dilution calculation and shareholder analytics. Employee ESOP administration handles option grant documentation, vesting schedule tracking, exercise workflows, and the jurisdiction-specific tax compliance for employees in each covered country. The secondary marketplace capability is a distinctive feature — Qapita provides a liquidity platform where employees and early investors can sell equity in private companies, addressing the illiquidity problem that makes pre-IPO equity difficult to value for retention purposes. This secondary market functionality has particular relevance in Southeast Asia where IPO timelines are less predictable and employees may need liquidity options before an exit event. 409A equivalents and local valuation support cover the fair market value determinations required for option pricing in each jurisdiction. Integration with legal tools and cap table-aware document management simplifies the due diligence process for fundraising. For Southeast Asian and Indian founders managing equity complexity across multiple legal jurisdictions where US-centric platforms provide inadequate regional coverage, Qapita's multi-market expertise provides meaningful practical value.