Congratulations on taking the plunge into the exciting world of startups! Securing funding is crucial, and navigating the various financing options can be overwhelming. Two popular instruments, Simple Agreements for Future Equity (SAFEs) and convertible notes, often cause confusion.
This comprehensive guide will break down everything you need to know about SAFEs vs convertible notes, empowering you to make an informed decision for your fundraising strategy.
Understanding the Basics
What are SAFEs?
Imagine a handshake deal with an investor. A SAFE is a founder-friendly way of raising capital where investors provide capital in exchange for the right to convert that investment into equity at a later date, typically during a priced financing round (e.g. Series A) or a liquidity event (e.g. acquisition, IPO). Think of it as a placeholder for future shares.
Key features include:
- No Interest or Maturity Date: Unlike loans, SAFEs are interest-free and lack a repayment deadline, offering funding flexibility for startups.
- Conversion Trigger: SAFEs convert upon a qualified financing event, often triggered by a priced equity round, a liquidity event, or a predetermined date.
- Valuation Cap and Discount: To incentivize early investment, SAFEs may include a valuation cap (maximum valuation used for conversion) and/or a discount (percentage reduction in the price per share).
For more information on SAFEs, check out our article: How SAFEs Convert: A Look Under the Hood.
What are Convertible Notes?
Think of a convertible note as a short-term loan that converts to equity under certain condition(s). Startups issue convertible notes to investors, promising to repay the principal amount with interest, if specific milestones aren’t met.
Here’s a breakdown of key features:
- Interest and Maturity Date: Convertible notes accrue interest and have a maturity date. At this point, they either convert into equity or are repaid with interest.
- Conversion Discount and Cap: Similar to SAFEs, convertible notes may include conversion discounts and valuation caps to entice investors.
- Debt Instrument: Unlike SAFEs, convertible notes are considered debt, creating a legal obligation for repayment if not converted into equity by the maturity date. However, the maturity date for a convertible note can be extended if the investor provides written consent.
The Great SAFEs vs Convertible Notes Debate
Choosing Your Champion: Factors to Consider
- Startup Stage: Early-stage startups with uncertain valuations might prefer SAFEs due to their flexibility. Convertible notes, with their clearer repayment terms, can be suitable for later-stage startups with more defined valuations.
- Investor Preferences:
- Angel Investors: Angel Investors usually prefer SAFEs more than convertible notes, but the interest payments can also be favorable to them depending on how long they’ve been invested in the company (for example, if it’s a note for a bridge between Seed and Series A and they are invested in the Pre-Seed). This is also dependent on macro factors such as the overall economy and the sentiment of risky investments.
- Institutional Investors: While Institutional Investors generally shy away from both SAFEs and convertible notes, they are typically okay with using them as bridge rounds. These investors may lean more towards convertible notes since they can at least accrue interest and get some of their allocation back.
- Financial Runway: If you need runway without the pressure of interest payments, SAFEs might be ideal. Convertible notes, with their set maturity date, can create repayment pressure if a financing round isn’t secured.
Beyond the Basics: Key Considerations
- Negotiations: Both SAFEs and convertible notes offer room for negotiation, particularly regarding valuation caps and discounts.
- Legal and Tax Implications: Consult with legal and tax professionals to understand the specific implications of each instrument for your startup.
- Long-Term Impact: Consider how each instrument impacts your future capital structure, dilution (percentage ownership), and fundraising efforts.
SAFEs vs. Convertible Notes: Which is Right for Your Startup?
From a founder’s standpoint, SAFEs are generally the more attractive option. They avoid the debt burden of interest payments and maturity dates associated with convertible notes. However, the decision isn’t always straightforward.
Investors may favor convertible notes, especially if they’re confident your startup’s business model suggests strong future cash flow to repay potential debt. By carefully considering your needs, investor preferences, and long-term goals, you can navigate the choice between SAFEs and convertible notes and fuel your startup’s growth.
Have any follow-up questions or need additional help?
Reach out to our team with your questions or book a demo to learn how Mantle helps you manage SAFEs and convertible notes with our equity management software.
Good luck on the rest of your fundraising journey!

