YC Safe Financing Documents
Download the Safe
US companies
There are three versions of the post-money safe intended for use by US companies, plus an optional side letter.
- Safe: Valuation Cap, no Discount
- Safe: Discount, no Valuation Cap
- Safe: "Uncapped MFN" (no Valuation Cap, no Discount)
- Pro Rata Side Letter
- Safe User Guide
Non-US companies
There is one version of the post-money safe, Valuation Cap (no discount), intended for use by companies formed in Canada, Cayman and Singapore, plus an optional side letter for each country. Before using any of these international forms, you should consult with a lawyer licensed in the relevant country.
Canada
Cayman Islands
Singapore
About the Safe
Y Combinator introduced the safe (simple agreement for future equity) in late 2013, and since then, it has been used by almost all YC startups and countless non-YC startups as the main instrument for early-stage fundraising.
The original safe was a "pre-money" safe, designed for startups raising smaller amounts of money in advance of a priced round of financing (typically, a Series A Preferred Stock round). It was a simple and fast way to get that first money into the company, with safe holders viewed as early investors in that future priced round. However, early stage fundraising evolved in the years following the introduction of the original safe. Startups began raising much larger amounts of money as a first "seed" round of financing, making these rounds better considered as wholly separate financings rather than "bridges" into later priced rounds.
In 2018, Y Combinator released the "post-money" safe. By "post-money," safe holder ownership is measured after (post) all the safe money is accounted for—which is its own round now—but still before (pre) the new money in the priced round that converts and dilutes the safes (usually the Series A, but sometimes Series Seed). The post-money safe offers a significant advantage for both founders and investors: the ability to calculate immediately and precisely how much ownership of the company has been sold. It's critically important for founders to understand how much dilution is caused by each safe they sell, just as it is fair for investors to know how much ownership of the company they have purchased.
Key features
The safe has two fundamental features that are critically important for startups:
- High resolution fundraising. Startups can close with an investor as soon as both parties are ready to sign and the investor is ready to wire money, instead of trying to coordinate a single close with all investors simultaneously. High resolution fundraising may be much easier now that both founders and investors have more certainty and transparency into what each side is giving and getting.
- Simplified negotiation and reduced costs. As a flexible, one-document security without numerous terms to negotiate, safes save startups and investors money in legal fees and reduce the time spent negotiating the terms of the investment. Startups and investors will usually only have to negotiate one item: the valuation cap. Because a safe has no expiration or maturity date, there should be no time or money spent dealing with extending maturity dates, revising interest rates or the like.
Using the Safe
Whether you are using the safe for the first time or are already familiar with safes, we recommend reviewing the Safe User Guide (geared primarily at US companies). The Safe User Guide explains how the safe converts, with sample calculations, an explanation of the pro rata side letter, and suggestions for best use.
While the safe may not be suitable for all financing situations, the terms are intended to be balanced, taking into account both the startup's and the investors' interests. There is a trade-off between simplicity and comprehensiveness, so while not every edge case is addressed, the safe covers the most pertinent and common issues. Both parties are encouraged to have their lawyers review the safe if they want to, but it provides a starting point that can be used in most situations without modifications. This belief is based on firsthand experience seeing and helping hundreds of companies fundraise every year, as well as thoughtful feedback from founders, investors, lawyers and accountants.
Legal disclaimer
YC does not assume responsibility for the contents of, or the consequence of using, any version of the safe or any other document found on this website. Before using any of these forms, you should consult with a lawyer licensed in the country where your company was formed.