SAFE vs Convertible Note vs Priced Round: Which to Use at Pre-Seed

Most US pre-seed rounds use a SAFE because it is fast, cheap, and has no interest or maturity date. A convertible note is a SAFE with debt attached: an interest rate and a deadline to convert or repay. A priced round sells equity now at a set valuation and costs more in legal fees and time. For a first B2B SaaS pre-seed, the SAFE is usually the right default.

If you are about to approach angels and you genuinely do not know which structure to use, you are in the right place. These three instruments are not interchangeable, and the difference shows up later, on your cap table, when you can least afford a surprise.

What each instrument actually is

A SAFE, the Simple Agreement for Future Equity, is a promise that an investor's money converts into equity at your next priced round. It is not a loan. There is no interest, no maturity date, and nothing to repay. The standard version today is the post-money SAFE, which fixes the investor's ownership percentage at the time you sign, making the dilution easier to read.

A convertible note is a loan that converts to equity. It carries an interest rate and a maturity date, which is the date by which it must convert or be repaid. That maturity date is the catch. If your next round slips past it, you are technically in default unless the investor agrees to extend, which puts you in an awkward spot at the worst time.

A priced round sells equity now. You agree on a valuation, issue shares, and the investor owns a defined percentage from day one. It needs more legal work, a 409A valuation if you are issuing options, and usually a lead investor who sets terms.

How each one hits your cap table

The mechanics matter less than the dilution they produce. Here is the practical comparison.

The column that trips up first-time founders is "converts to equity." A SAFE and a note both delay the dilution to your next round. That feels great while you are raising, because your cap table looks clean. It feels worse later, when several SAFEs convert at once and you realize how much you actually sold. The post-money SAFE helps because it tells you the exact percentage each investor will own, so you can add them up before you sign the next one.

Valuation cap and discount, in plain terms

Both SAFEs and notes usually carry a valuation cap, a discount, or both. The cap is the highest valuation at which the money converts, so if your next round prices high, early investors still convert at the lower capped price and get the upside for taking early risk. The discount is a percentage off the next round's price, often in the 10 to 20 percent range. When an instrument has both, the investor gets whichever gives them more shares.

These two terms drive your real dilution far more than the headline number. A founder who agrees to a low cap to close fast can give away more than they would have in a clean priced round. Run the conversion math before you sign, not after.

So which should you use

For a typical first-time B2B SaaS pre-seed, default to a post-money SAFE. It is cheap, fast, and standard, and angels expect it. Reach for a convertible note only when a specific investor wants the debt protections, and go in knowing the maturity date is a real obligation. Move to a priced round when you are raising enough that a lead wants defined terms and a board seat, or when you have stacked so many SAFEs that your dilution has become hard to predict.

Whatever you choose, size the round before you pick the instrument. The structure is downstream of how much you need to reach your next milestone, which I break down in how much to raise at pre-seed. If you want the SAFE-versus-priced decision in more depth, see SAFE vs priced round at pre-seed, and for where this decision fits in the full raise, walk through the pre-seed fundraising process step by step. The complete playbook, including the cap-table math behind every one of these instruments, is in The Funding Framework.

The instrument is not the hard part. Understanding what it does to your ownership two years from now is, and that is the difference between a clean pre-seed and a cap table you regret.