Financing Instruments: SAFEs, Notes, and Priced Rounds

Three different ways to turn cash today into ownership later.

When an investor hands a startup money, that exchange has to be documented in one of a few standard legal forms. Each one answers the same underlying question (how much of the company does this money buy) on a different timeline and with different mechanics. Three instruments cover the large majority of early-stage deals.

SAFE (Simple Agreement for Future Equity)

A SAFE is an agreement to convert an investor's cash into equity at a future date, rather than issuing shares with a fixed price right now. It carries no interest and no maturity date, so it isn't a loan, and it's become the default instrument for a large share of seed-stage deals because it's fast to sign and cheap to draft.

Valuation cap: the maximum company valuation at which the SAFE converts into shares, protecting the early investor from being diluted down to almost nothing if the company's valuation jumps sharply by the next priced round.
Discount: a percentage reduction on the price per share the SAFE converts at, compared to what the next round's investors pay, rewarding the early investor for taking risk sooner.
MFN (most favored nation): a clause giving the investor the right to swap in better terms if the company later signs a SAFE on more favorable terms for someone else, common when a startup hasn't settled on a cap yet.
Post-money SAFE: the now-standard version, where the valuation cap is defined to already include the money from the SAFE itself, making the resulting ownership percentage calculable up front.
Conversion mechanics: the SAFE sits dormant, holding no shares and paying no interest, until a triggering event, usually the company's next priced equity round. At that point it converts into shares based on the cap, the discount, or the new round's price, whichever gives the investor the better outcome.

SAFEs are typically used at the pre-seed and seed stage, when a company's valuation is hard to pin down and both sides would rather defer that argument to a later round with more evidence to go on.

Convertible note

A convertible note is a SAFE's older sibling: debt, carrying an interest rate and a maturity date, that also converts into equity under similar cap-and-discount terms. Because it's legally debt, it typically ranks ahead of equity if the company fails and its assets get distributed. The maturity date also forces a resolution by a set point (conversion, repayment, or renegotiation) where a SAFE can sit indefinitely.

Notes were the more common instrument before SAFEs existed, and they're still used in some jurisdictions and situations where a SAFE isn't the market standard, or where an investor specifically wants debt-like protections.

Priced equity round

A priced round sets a valuation for the company today and sells shares of preferred stock at an agreed price per share, rather than deferring the valuation question. This is where pre-money and post-money valuation become concrete numbers, worked through in the next article.

Priced rounds carry more legal weight and cost more in legal fees to close than a SAFE, because they involve a full set of financing documents: a stock purchase agreement, an investor rights agreement, and a charter amendment defining what the new preferred shares are entitled to. They're standard by Series A and beyond, once a company's valuation is well-evidenced enough that both sides are comfortable agreeing to a number.

Market convention picks the instrument. SAFEs at pre-seed and seed, notes in specific situations, priced rounds from Series A onward: that's the pattern most rounds follow. A founder trying to force a priced round at pre-seed, or a SAFE at Series A, is swimming against what investors at that stage expect to sign.

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