Why Use a Convertible Note Instead of a SAFE?
Companies and investors choose convertible notes when debt status matters: the investor wants interest, a maturity date that forces a conversation, and creditor priority if the company fails. Notes also persist in bridge rounds between priced rounds and in markets outside the United States where local investors prefer them. In US pre-seed, notes are now a small minority.
Why the question exists at all
In US early-stage fundraising, the SAFE has largely replaced the convertible note. Among unpriced pre-seed rounds raised by US startups on Carta's platform, SAFEs accounted for 93 percent in Q2 2026, and notes fell to a record low of about 7 percent of rounds in Q1 2026 (Carta). So the useful question is not how notes work but why anyone still picks one.
The short answer: a convertible note is a loan, and a SAFE is deliberately not. Every reason to choose a note traces back to something debt status provides. The mechanics, including caps, discounts, and conversion, are covered in the guide to how convertible notes work. This page is about the choice.
What an investor gets from a note that a SAFE removes
Four features separate the two instruments, and investors who insist on notes usually want at least one of them.
Interest
A note accrues interest, which in startup practice usually converts into extra shares rather than being paid in cash. In one large sample, 240 financings handled by the Canadian law firm Osler in 2024 and 2025, the median note rate was 7.0 percent in 2025, down from 8.0 percent in 2024 (Osler Deal Points, 2025). The return is modest, but it compensates the investor for time if the next round is slow.
A maturity date
A note falls due on a fixed date, a median of 24 months in the same Osler sample. If no qualifying round has happened, holders can extend, convert on the note's fallback terms, or demand repayment. Few early companies can repay, so maturity gives the investor a scheduled negotiation and real leverage in it. A SAFE has no deadline at all.
Creditor priority
Until conversion, note holders are creditors. In a wind-down they rank ahead of every equity holder, and a note can be secured against company assets. SAFE holders also come ahead of common stock on dissolution under the standard form, but they are not creditors and hold no security.
Choice on an acquisition
Notes commonly let holders choose, on a sale before conversion, between repayment, often with a premium, and conversion at the cap. The standard SAFE gives the greater of the investment back or the converted value, which is similar in effect but leaves no room to negotiate a premium.
Why a company might choose one
The investor requires it. Some angels, family offices, and corporate investors have internal rules that favour debt, or simply prefer the protection. A company that wants their money accepts the instrument.
A bridge between priced rounds. Existing investors often extend a short bridge between a Series A and a Series B as a note. The next round is expected soon, so maturity is less of a threat, and the investors are already insiders who want creditor standing for the gap.
The company is past the SAFE's sweet spot. Larger and later-stage convertible raises are more often documented as notes. In the Osler sample, notes were 48.2 percent of convertible deals by count in 2025 but 68.3 percent of convertible dollars, consistent with notes being used for bigger cheques.
Familiarity. In some markets and boardrooms a loan with a conversion feature is simply the structure everyone already understands, and that is worth more than the SAFE's simplicity.
Outside the United States
The SAFE was designed for US companies, and Y Combinator publishes non-US versions only for Canada, the Cayman Islands, and Singapore. Elsewhere, founders either adapt a SAFE with local counsel or use the instrument local investors already know.
Canada. Notes remain common, as the Osler figures show, even though a Canadian SAFE exists.
United Kingdom. The local alternative is usually neither a SAFE nor a note but an advance subscription agreement, because investors want SEIS or EIS tax relief. HMRC will not consider an ASA suitable for SEIS unless it bears no interest, cannot be refunded, varied, or assigned, and has a longstop date, generally no more than six months out (HMRC Venture Capital Schemes Manual, VCM33025). Interest-bearing loan notes do not fit that model.
Many other markets. A loan that converts into shares is a long-established structure in many legal systems, and local investors and counsel may prefer it to a transplanted US form. Check how local law treats the instrument, including usury limits, withholding tax on interest, and whether converted shares need fresh shareholder approvals.
What the note costs the company
Interest is dilution. An illustrative example: 500,000 at 6 percent simple interest for 24 months accrues 60,000, so 560,000 converts. The investor receives 12 percent more shares than the cash alone would buy.
Maturity is a risk you schedule. If fundraising takes longer than planned, the company negotiates an extension from weakness. Many notes let a majority of holders amend terms for all, which helps, but it still costs something.
More drafting, less standardisation. Notes vary more between firms and investors than SAFEs do, so each one needs reading.
This page is general information, not legal or tax advice. Debt treatment, securities exemptions, and tax relief depend on jurisdiction and the specific note; get counsel and tax advice before choosing an instrument.
Frequently asked questions
- Why would an investor prefer a convertible note over a SAFE?
- Because a note is debt. It accrues interest that converts into extra shares, has a maturity date that forces a renegotiation if no round happens, and makes the holder a creditor who ranks ahead of all equity in a wind-down. A SAFE removes all three, which is why investors seeking protection still ask for notes.
- Are convertible notes still common?
- Less so in US pre-seed, where Carta reported notes at a record low of about 7 percent of unpriced pre-seed rounds in Q1 2026. They remain common for bridge rounds, larger convertible raises, and in some markets outside the United States, such as Canada, where local investors and counsel are used to them.
- Why use a convertible note for a bridge round?
- A bridge is usually short, funded by existing investors, and expected to end at a priced round soon. A note suits that: maturity is less threatening when the next round is close, insiders get creditor standing for the gap, and interest compensates them if the round slips. Model the conversion before agreeing.
- Are convertible notes worse for founders than SAFEs?
- Usually somewhat. Interest adds shares at conversion, maturity creates a deadline that can be used as leverage, and creditor status puts holders ahead of founders in a downside. The gap narrows when the note is short, the rate is low, and maturity terms allow conversion or majority extension rather than repayment.