SAFEs vs. Convertible Notes: What Early-Stage Founders Should Know

Founders raising their first outside capital almost always end up choosing between two instruments: a SAFE (Simple Agreement for Future Equity) or a convertible note. Both delay the question of valuation until a priced round, but they aren't interchangeable.

The core difference

A convertible note is debt. It accrues interest, has a maturity date, and sits on your balance sheet as a liability until it converts or is repaid. A SAFE is not debt — it's a contractual right to receive equity in the future, with no interest and no maturity date.

For most seed-stage companies, that distinction matters less in practice than it sounds, but it does affect a few things:

Balance sheet cleanliness. Notes complicate diligence in a later round because counsel has to account for accrued interest and maturity mechanics. SAFEs are simpler to explain to a new investor.
Investor familiarity. Some investors, particularly outside the U.S. or in more traditional funds, are more comfortable with notes because they're used to debt instruments.
Series of instruments. If you're raising over several months from different investors, stacking SAFEs with different caps and discounts is common and generally easier to track than stacking notes.

What we actually negotiate

The terms that matter most in either instrument are the valuation cap, the discount rate, and — increasingly — the pro rata rights granted to larger checks. Founders often focus on the cap and underweight the pro rata provisions, which can meaningfully affect your cap table's complexity two rounds later.

The right instrument is usually the one your lead investor is comfortable with. Where we add the most value is making sure the cap, discount, and side letter terms are consistent across everyone in the round, so the eventual conversion doesn't produce surprises.

If you're preparing a pre-seed or seed raise, it's worth having this conversation with counsel before you send your first term sheet, not after.