What is a SAFE? (Simple Agreement for Future Equity)
Simple Agreement for Future Equity (SAFE)
Author: The Carta Team
Read time: 13 minutes
Published date: 6 November 2025
Learn the potential advantages and disadvantages of fundraising with SAFE agreements and everything you need to know before issuing SAFEs.
What is a SAFE agreement?
A SAFE (Simple Agreement for Future Equity) is a legal contract between a startup company and an investor that allows the investor to provide funding to your company now in exchange for the right to receive equity in your company at a future date—typically during your company’s next priced round or during a liquidity event.
SAFEs were first developed by Y Combinator in 2013 as an alternative to convertible notes. A SAFE agreement is a type of convertible security, but unlike debt instruments, SAFEs do not accrue interest or have a maturity date, making them an attractive fundraising option for early-stage startups.
Recent data shows just how dominant it has become in early-stage fundraising. For the earliest pre-seed rounds, SAFEs comprised a record high of 90% of all deals on Carta in the first quarter of 2025. Even at the seed stage, where priced rounds are also an option, SAFEs have become the go-to investment vehicle. Over a recent 12-month period, SAFEs were the most popular choice, accounting for 64% of all seed rounds, compared to just 27% for priced equity and 10% for convertible notes.
The main purpose of a SAFE is to allow you to raise capital without needing to set a specific valuation for your startup. This is a common challenge for new companies that have not yet established a track record or generated revenue. Using a SAFE simplifies the fundraising process for first-time founders and their first investors, allowing you to secure funding quickly and focus on building your business.
How does a SAFE agreement work?
The basic mechanic of this financing document is straightforward. An investor gives you capital, and in return, the SAFE contract promises them stock when a specific conversion event occurs in the future. This process is known as conversion, where the investor's initial investment converts into company shares. The Securities and Exchange Commission (SEC) notes that SAFEs are designed to automatically convert into equity upon a defined triggering event, like a priced financing round.
This future event is often called a triggering event. For most startups, the triggering event is the company's first priced round of equity financing. A priced round is when you sell shares to new investors at a set price-per-share, which establishes a formal valuation for your company. At that moment, the investor's SAFE investment converts into shares of stock, making them a part-owner of your company.
A SAFE operates like any other type of legal contract. Key terms like a valuation cap or discount rate incentivize investors with the opportunity to receive shares at a favorable price when the SAFE converts into shares.
SAFEs are flexible, as they don’t carry interest or have a maturity date, which makes them more appealing for startups that want to avoid debt or immediate shareholder obligations. However, until the SAFE converts, investors have no investor rights, voting rights, or ownership in the company because they are not yet shareholders. Once a triggering event occurs, the SAFE converts to equity based on the agreed terms, allowing investors to receive shares at a lower cost than future investors.
Understanding the key terms in a SAFE agreement
While the concept of a SAFE is simple, the agreement contains several key terms that can feel like jargon at first. Understanding these few components is straightforward and will give you confidence in your fundraising conversations. Knowing these terms helps you speak the same language as your investors and negotiate terms that are fair for both you and your early backers.
Valuation cap: The maximum company valuation at which an investor's money converts into equity. If the valuation of the company is higher than the valuation cap of the SAFE, it converts into equity at a lower price-per-share than the price paid by investors in the priced round.
Discount price (conversion discount): This is a percentage off the share price that the SAFE holder receives compared to the new investors in the priced round.
Pre-money vs. post-money SAFEs: This distinction determines when the valuation cap is applied during a priced round. A pre-money SAFE calculates ownership based on the valuation before the new funding, while a post-money SAFE does so after. Post-money SAFEs are more common in early-stage fundraising.
Most Favored Nation (MFN) clause: Protects early investors by ensuring they receive the same terms if better ones are issued later.
How do SAFEs compare to convertible notes and priced rounds?
| Feature | SAFE | Convertible note | Priced round |
|---|---|---|---|
| Is it debt? | No | Yes | No |
| Maturity date? | No | Yes | No |
| Accrues interest? | No | Yes | No |
| Complexity and cost | Low | Medium | High |
The key takeaway is that a SAFE is not a loan, so it doesn't add debt to your company's balance sheet, which is important for maintaining clean books. It also doesn't come with a maturity date, reducing financial pressure on your new company.
SAFEs vs. priced rounds
- Company valuations: During a priced round, funds are based on a negotiated valuation, while a SAFE does not rely on a valuation.
- Equity type: In a priced round, you give investors shares immediately. With SAFEs, you promise future shares in exchange for today's investment.
SAFEs vs. convertible notes
There are two key differences: 1) Debt - A convertible note comes with an interest rate and maturity date, whereas a SAFE does not. 2) Conversion - SAFEs convert during the next priced round regardless of the amount raised.
Why do founders use SAFEs for early-stage fundraising?
SAFEs have become the go-to investment vehicle for seed rounds because they are built for speed and simplicity. Founders appreciate SAFEs for several reasons:
- They are faster to execute than priced rounds.
- Lower legal fees save cash for product development.
- You can close with investors individually, rather than waiting for everyone to commit.
- They allow you to focus on building your business, not on complex fundraising negotiations.
When do startups prefer SAFEs?
Fundraising with SAFEs is beneficial if your company:
- Is not ready to negotiate a formal valuation.
- Wants more flexibility.
What type of company can issue a SAFE?
Generally, your company needs to be classified as a C corporation. While some LLCs may raise SAFEs, it's generally simpler as a C-corp. Consult your lawyer for specific regulations.
How to manage your SAFE fundraising round
Managing SAFEs requires organization. Early-stage fundraising often involves multiple small checks. A clean, well-managed SAFE round sets the stage for a smooth transition to your next growth phase and builds trust with your stakeholders.
Modeling your SAFE conversion and dilution
Founders can use a SAFE and convertible note calculator to model different scenarios.
Issuing and tracking your SAFEs
A modern approach streamlines the management of SAFEs. Carta's SAFE Financing platform allows you to create agreements, collect signatures, and receive funding efficiently.
Four factors to consider before you raise a SAFE
Before fundraising with SAFEs, reflect on your goals and equity distribution plan:
- How much equity do you plan to give up?
- How much money do you want to raise in your next priced round?
- What milestones will you use the money to reach?
- How will you track your SAFE investments?
Advantages and disadvantages of fundraising with SAFEs
| Advantages | Disadvantages |
|---|---|
| Are generally faster and more affordable than priced rounds. | Could lead to excessive dilution if not careful. |
| They’re appealing to investors. | You may have a harder time finding investors without an obvious lead. |
| They give time to reach certain milestones. | Generally do not grant many preferred terms to investors. |
| No interest rates to worry about. | Holding period for QSBS tax benefits starts after conversion. |
From SAFEs to scale: Your partner in growth
Issuing a SAFE often kicks off your fundraising journey, leading to priced rounds and preferred stock issuance. Carta's cap table management software keeps your records organized and up-to-date.
Frequently asked questions about SAFE agreements
Is a SAFE agreement considered debt or equity?
A SAFE is neither debt nor direct equity; it gives an investor the right to receive equity in the future.
What happens if a SAFE never converts?
The SAFE holder may get their investment back or convert into equity at a valuation cap if the company is acquired before a priced round.
Do investors have any rights with a SAFE?
SAFE holders do not have voting rights until it converts into stock.
What legal documents are required for a SAFE?
Mainly the SAFE agreement and updated cap table.