Stock Options vs. SAFEs vs. Convertible Notes: What Founders Need to Know

Stock Options

As a founder, you'll encounter a range of financial instruments across your startup's lifecycle — stock options for employees, SAFEs and convertible notes for early investors, and priced equity in later rounds. Each works differently, carries different legal implications, and requires different documentation.

Stock options give employees and advisors the right to purchase company shares at a fixed price — the "exercise price" — at a future date. Options are not shares; they are the right to buy shares. The key elements:

• Grant date: when the options are issued
• Vesting schedule: typically four years with a one-year cliff
• Exercise price: set by a 409A valuation (must equal fair market value for ISOs)
• Expiration: options typically expire 10 years from grant, or 90 days after termination
• Tax treatment: ISOs get favorable tax treatment for employees; NSOs do not

SAFEs (Simple Agreement for Future Equity)

A SAFE is an investment instrument developed by Y Combinator that converts to equity in a future priced round. Investors give you cash now; in exchange, they receive shares when you raise a priced round — typically at a discount to the round price, or based on a valuation cap.

SAFEs are the dominant seed-stage fundraising instrument because they're simple, cheap to issue, and well-understood by both founders and investors. Key terms to understand:

• Valuation cap: the maximum valuation at which the SAFE converts (protects early investors)
• Discount rate: a percentage reduction on the next round's price
• MFN (most-favored nation): investor gets the best terms of any subsequent SAFE

Convertible Notes

Convertible notes are debt instruments that convert to equity at a future round. Unlike SAFEs, they have an interest rate (typically 4–8%) and a maturity date. If the company doesn't raise a qualifying round by maturity, investors can demand repayment.

Most seed-stage founders prefer SAFEs — but convertible notes still appear in some markets and investor relationships where the debt structure is preferred.

Which Should You Use?

For most pre-seed and seed raises: SAFEs. For larger seed rounds where investors specifically prefer notes: convertible notes. For employees: stock options. Zecca Ross Law helps founders structure and document all three instruments — and advises on which approach fits the founder's goals, investor expectations, and cap table math.