What Is a SAFE Note?
A SAFE (Simple Agreement for Future Equity) is a contract between a startup and an investor. The investor gives you money now. In return, they get the right to receive equity later - when a priced round happens. No interest, no maturity date, no monthly payments.
~90% of pre-seed rounds in 2026 use SAFEs. Y Combinator created the instrument in 2013 to make early-stage investing faster and simpler. It worked - SAFEs replaced convertible notes as the default for angel and pre-seed deals.
How a SAFE Actually Works
Here's the lifecycle of a SAFE in simple terms:
Day 1: An angel investor gives you $100K. You sign a SAFE with a $3M valuation cap. No equity changes hands yet.
Months later: You raise a seed round - a priced round at $10M pre-money valuation.
Conversion: The SAFE converts to equity at the $3M cap (not the $10M price), because the cap protects the early investor. The angel's $100K buys equity as if the company were worth $3M, giving them roughly 2.9% ($100K / $3.5M post-money at cap).
The key insight: SAFEs are not debt. There's no interest rate, no repayment obligation, and no maturity date. The investor gets equity only when a qualifying event happens (priced round, acquisition, or IPO).
The Two Key Terms in Every SAFE
1. Valuation Cap
The maximum valuation at which the SAFE converts to equity. This is the most important number in the agreement.
Example: $3M valuation cap means the investor's money converts as if the company is worth $3M, regardless of whether your next round values it at $10M or $50M.
| Valuation Cap | Investment | Effective Ownership at Conversion |
|---|---|---|
| $2M | $100K | ~4.8% |
| $3M | $100K | ~3.2% |
| $4M | $100K | ~2.4% |
| $5M | $100K | ~2.0% |
What cap should you set? Pre-seed caps in 2026 typically range from $2M to $5M. Don't set it too high (investors won't get enough equity to care) or too low (you'll give away too much of your company).
2. Discount Rate
An alternative or additional benefit that gives the investor a percentage discount on the next round's price.
Example: A 20% discount means if your seed round prices shares at $1.00, the SAFE holder pays $0.80 per share.
In practice: Most SAFEs in 2026 use a valuation cap with NO discount. This is simpler and has become the standard. Some SAFEs have both a cap and a discount, and the investor gets whichever produces more equity.
The 4 Types of SAFEs
Y Combinator publishes standard SAFE templates. The four versions are:
| Type | Best For |
|---|---|
| Cap, no discount | Most common. Simple. Standard for pre-seed. |
| Discount, no cap | Rare. Used when valuation is hard to determine. |
| Cap and discount | Investor gets the better of both. More investor-friendly. |
| MFN (Most Favored Nation) | No cap or discount, but investor gets the best terms of any future SAFE. |
My recommendation: Use the cap, no discount SAFE for pre-seed. It's the simplest, most founder-friendly standard that investors accept.
This is the kind of deal structure I discuss with founders on advisory calls - what cap makes sense for your stage and how to negotiate terms that work for both sides. Learn more about Angel Calls.
Common SAFE Mistakes Founders Make
Stacking too many SAFEs at different caps
If you raise $100K at a $2M cap, then $200K at a $4M cap, then $150K at a $3M cap - your cap table becomes a conversion nightmare. Try to raise on a single SAFE with one cap.
Setting the cap too low to "close quickly"
A $1M cap sounds attractive to investors, but it means you're giving away a massive chunk of your company. At a $1M cap, a $200K SAFE converts to roughly 17%. That's too much for pre-seed.
Not understanding dilution math
SAFEs don't show up on your cap table until they convert. But the dilution is coming. If you have $500K in outstanding SAFEs at a $3M cap, you've already committed roughly 14% of your company. Track this.
Raising too much on SAFEs before a priced round
SAFEs are meant for small early raises. If you have $2M+ in outstanding SAFEs, the conversion math at your seed round gets complicated and can surprise both you and your investors.
Not sure what terms to offer on your SAFE? I work with pre-seed founders to structure their raises - cap size, round amount, and investor mix. The $300 session fee is credited toward my investment if I invest. Book an Angel Call
SAFE vs. Convertible Note: Quick Comparison
| Feature | SAFE | Convertible Note |
|---|---|---|
| Interest rate | None | Yes (typically 2-8%) |
| Maturity date | None | Yes (12-24 months) |
| Repayment obligation | None | Technically yes |
| Complexity | Simple (5 pages) | More complex (10+ pages) |
| Legal costs | Minimal ($0-$500) | Higher ($2K-$5K) |
| Standard at pre-seed | Yes (~90% of deals) | Less common |
The bottom line: SAFEs are simpler, cheaper, and more founder-friendly. Use them for pre-seed. Convertible notes still have a place in specific situations (bridge rounds, international deals where SAFEs aren't recognized).
Your SAFE Checklist Before Signing
- Valuation cap is in the $2M-$5M range for pre-seed
- You're using a standard Y Combinator SAFE template
- No unusual terms added (board seats, veto rights, information rights beyond standard)
- You understand how much dilution the SAFE represents
- Total outstanding SAFEs won't exceed 20-25% dilution at conversion
- You've discussed the cap with at least one advisor or experienced founder
- The investor understands that SAFEs are not debt and have no repayment obligation
Frequently Asked Questions
Is a SAFE note equity or debt?
A SAFE is neither equity nor debt - it's a contract for future equity. The investor doesn't receive shares immediately (not equity) and there's no obligation to repay (not debt). Shares are issued only when a qualifying event occurs, typically a priced funding round.
What is a good valuation cap for a pre-seed SAFE?
Pre-seed valuation caps in 2026 typically range from $2M to $5M. The right cap depends on your traction, team strength, and market. A cap that gives investors 10-20% combined ownership for the round is standard. Don't over-optimize - closing the round quickly matters more than squeezing an extra $500K on the cap.
Can a SAFE note expire?
No. Standard SAFEs have no maturity date and no expiration. They remain outstanding until a conversion event (priced round, acquisition, or IPO) or dissolution. This is a key advantage over convertible notes, which have maturity dates that can create pressure.
How many SAFEs can a startup have?
There's no legal limit, but keep it manageable. Having 3-10 SAFEs is common at pre-seed. More than 15-20 individual SAFEs creates administrative complexity. Try to raise on a single SAFE template with one valuation cap to keep things simple.
Do I need a lawyer for a SAFE?
For a standard Y Combinator SAFE with no modifications, you don't need a lawyer. The template is designed to be used as-is. If an investor wants to add custom terms or you're modifying the standard SAFE, get legal review. Budget $500-$2,000 for a lawyer to review modified terms.
Artem Luko is an angel investor based in Marbella, investing $25K-$3M in pre-seed and seed startups. Learn more at artemluko.com.