Equity management
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A convertible note is a short-term loan to a startup. Instead of being paid back in cash, it turns into shares (equity) later, usually in the startup's next funding round. The investor provides money now and receives shares later, often at a lower price than new investors pay in that round.
It lets them raise money quickly, without having to agree on what the company is worth right now. That question gets settled later, when there's more evidence to base it on.
Legally, a convertible note is debt. It has a loan amount (principal), an interest rate, and a due date (maturity date), and if the company fails, noteholders get paid back before shareholders. But in practice, almost no one expects the loan to be repaid. Both sides expect it to convert into shares. The debt terms mostly exist as a backup plan in case the next funding round never happens.
Convertible notes are most common at the earliest stages: pre-seed and seed. They are often used to bridge the gap between two priced funding rounds or when a company needs cash fast and doesn't have time to negotiate a full round.
1. Principal: The amount invested. This is the base on which interest accrues and which converts into shares at the trigger event.
2. Interest rate: Notes typically carry a modest rate, often between 2 and 8 percent annually. Interest usually accrues rather than being paid in cash, and the accrued amount is added to the principal at conversion, giving the investor slightly more shares.
3. Maturity date: The date the note falls due if it has not converted, commonly between 12 and 24 months from issue. What happens at maturity is negotiated and matters more than founders often assume.
4. Valuation cap: The highest company value the note can convert at, no matter how high the next round's actual valuation is. This protects early investors from missing out if the company's value jumps a lot. For example: if a note has a $10 million cap and the next round values the company at $30 million, the note still converts as if the company were worth $10 million.
5. Discount rate: A discount on the price per share in the next round, usually 10% to 30%, with 20% being typical. It rewards investors for taking on early risk.
6. Cap and discount together: Most notes carry both, and the investor receives whichever produces the better outcome for them, not both applied in sequence.
7. Qualified financing: The event that triggers the note to convert automatically, usually a funding round above a certain size. If this minimum size is set too low, even a small raise could accidentally trigger conversion.
8. Conversion mechanics: This spells out what the note actually turns into, usually the same type of shares issued in that round, though sometimes a separate class with slightly different rights, since the noteholder is effectively paying less per share.
9. Change of control provision: What happens if the company gets acquired before the note converts. Usually, the investor can choose between getting their money back (often 1x to 2x what they put in) or converting to common shares right before the sale.
The lifecycle runs through four stages.
1. Issue: The company and investor agree on the amount, interest rate, maturity date, cap, discount, and what counts as a "qualified financing." The note gets signed, and the company gets the cash. No shares change hands yet, and no valuation is set, so this step is fast and cheap compared to a full funding round.
2. Accrual: Interest builds up over the life of the note while the company works toward the milestones needed for its next round. Because no shares have been issued yet, the note won't show up on the cap table, which is easy to forget but important to track.
3. Trigger: A qualifying funding round happens, and the note automatically converts into shares.
4. Conversion: The number of shares the investor gets is calculated by taking the principal plus any accrued interest and dividing it by the conversion price. The conversion price is whichever is lower: the price set by the valuation cap, or the discounted price from the new round.
To see the mechanics, take an investor who puts in 500,000 on a note with a 5 million valuation cap and a 20 percent discount. The company later raises a Series A at a 20 million pre-money valuation with a share price of 2.00.
The discount route gives a price of 1.60 per share, which converts the investment into 312,500 shares.
The cap route values the company at 5 million rather than 20 million, so the effective price is a quarter of 2.00, which is 0.50 per share. That converts the investment into 1,000,000 shares.
The investor takes the better of the two, so the cap applies. This is the usual outcome when a company raises the next round at a substantially higher valuation than the cap.
Speed: A note can be signed and funded in days. A full equity round means negotiating terms, doing due diligence, and updating legal documents, which usually takes weeks or months.
1. Lower cost: Legal fees for a note are much smaller than for a priced round, which matters most when the raise itself is small.
2. Deferred valuation: Neither side has to agree on a number before there is evidence to support one. Founders avoid locking in a low valuation too early, and investors avoid overpaying for a company with no track record.
3. Flexibility on round size: A company can issue notes to investors over a period rather than closing everyone at once, which suits raising from angels who commit at different times.
4. Bridge funding: Notes are the standard way to extend a company's runway between funding rounds, whether it's waiting on a milestone or better market conditions.
5. Familiarity: Angel investors and early-stage funds know the structure well, and the terms are largely standardized, which reduces negotiation friction.
6. Wider applicability: In markets where SAFEs are not well established under local company law, convertible notes remain the practical default because they are documented as ordinary debt.
Convertible notes do not avoid dilution; they postpone it. The effect is invisible on the cap table until conversion.
Three mechanics drive the outcome.
1. The valuation cap sets the conversion price. When the next round is priced well above the cap, noteholders convert at the cap's implied price rather than the round price, receiving more shares than the investment amount alone would suggest. Counterintuitively, a strong up round can produce greater dilution from the notes than a modest one.
2. Accrued interest adds shares. Interest converts alongside principal. Over two years at 6%, a $1 million note converts at roughly $1.12 million in value, and the additional shares come from existing shareholders' pool.
3. Multiple notes compound. When a company issues several notes over time, each with different caps and discounts, their combined conversion can dilute founders more significantly than any single note would indicate in isolation.
Another point regularly catches founders. In many rounds, the new investor negotiates for their percentage to be calculated after the notes convert and after the option pool is topped up. When that happens, the dilution from both the notes and the pool falls entirely on existing shareholders rather than being shared with the incoming investor.
Before signing any note, run the conversion at several plausible next-round valuations and see what the founder shareholding looks like in each case. The gap between the optimistic and pessimistic scenarios is usually wider than expected, and it is far easier to negotiate the cap before signing than to fix the outcome afterward.
If no qualifying financing occurs before maturity, the note becomes a legally due debt. What follows depends on the documentation and the commercial reality at the time.
1. Extension: The most common outcome. Both parties agree to push the maturity date back, sometimes in exchange for a better cap, a higher discount, or a higher interest rate. Investors generally prefer this to forcing a repayment the company cannot make.
2. Conversion at a fallback valuation: Many notes specify a valuation at which the note converts automatically if maturity is reached without a qualifying round. This avoids the standoff entirely and is worth negotiating into the document at the outset.
3. Conversion by investor election: Some notes give the investor the right to convert into common shares or into the most recent preferred class at maturity, at their discretion.
4. Repayment demand: The investor can demand repayment of principal plus interest. Most early-stage companies don't have the cash for this, so it's rarely actually enforced, but having the right gives the investor leverage to push for better terms.
5. Default and enforcement: If repayment is demanded and not made, the company is in default. Consequences can include enforcement action, and in some structures directors face questions about continuing to trade when they can't meet obligations.
6. Distressed negotiation: In practice, a note reaching maturity without a round usually signals that the company has not hit its milestones. That is precisely when the founder has the least leverage, and the terms agreed at that point tend to be materially worse than what was available at issue.
1. Set the valuation cap carefully: This is the single most important number. Too low, and you give away more of the company than intended. Too high, and it doesn't really protect the investor, which can make the note harder to sell.
2. Give yourself enough runway to maturity: Match the maturity date to a realistic timeline for reaching the milestones that will support a priced round, then add a buffer. A 12 month note on an 18 month plan creates an avoidable problem.
3. Define qualified financing sensibly: Set the minimum round size high enough that a small bridge does not accidentally trigger conversion of the whole note stack.
4. Track the total note stack: Maintain a running model of all outstanding notes and what they convert into at different next round valuations. This should be visible to the founders at all times, not reconstructed during a round.
5. Negotiate the maturity fallback up front: Agree now what happens if no round occurs, whether that is automatic conversion at a stated valuation or an agreed extension mechanism.
6. Understand the change of control terms: If the company is acquired before conversion, the note terms determine whether the investor takes a repayment multiple or converts to equity. This can meaningfully change what founders receive from an early exit.
7. Watch the interaction with the option pool: A pool top-up agreed alongside the next round compounds with note conversion. Model both together, not separately.
8. Check local regulatory treatment: Convertible instruments are treated differently across jurisdictions, and rules on foreign investment, pricing and reporting can affect how and when a note can convert. This is worth checking before signing rather than at conversion.
9. Keep the cap table current: Notes don't show up as shares until they convert, so a cap table with only issued equity doesn't tell the full story. Keeping a "fully diluted" view that includes outstanding notes avoids nasty surprises later.
Convertible notes solve a real problem at the moment it matters most: a startup that needs cash to hit its next milestone can raise quickly and cheaply, without forcing a valuation conversation neither side is ready to have.
The trade-off is that the dilution doesn't disappear; it's just delayed, and easy to underestimate. Valuation caps, accrued interest, and multiple notes can all combine at conversion, often right when a founder is also dealing with an option pool top-up and a new investor coming in. Founders who model out different conversion scenarios before signing, keep a fully diluted cap table, and lock down the maturity terms early get the speed of a convertible note without an unpleasant surprise at the end.
Equity is an immediate purchase of shares at an agreed valuation, so the investor becomes a shareholder on day one and the cap table reflects it straight away. A convertible note is a loan that turns into shares later, so no valuation is set and no shares are issued at the time of investment. Equity gives the investor voting rights, information rights, and an immediate ownership percentage. A noteholder is a creditor until conversion, with no ownership stake and usually no governance rights, but with a repayment claim that ranks ahead of shareholders if the company fails.
An investor lends a startup 250,000 on a note with a 20 percent discount, a 5 million valuation cap, 5 percent annual interest, and an 18-month maturity. Fifteen months later, the company raises a Series A at a 15 million pre-money valuation. The accrued interest is roughly 15,600, so the conversion amount is about 265,600. The cap values the company at 5 million rather than 15 million, giving an effective share price one-third of the round price. The investor converts at that price and receives roughly three times the shares that the same money would have bought in the round itself.
In venture capital, a convertible note is a bridge instrument used to fund a company between priced rounds or to complete a first institutional raise without setting a valuation. Funds use them when a company needs capital faster than a full round can be documented, when the business is too early to price confidently, or when extending runway to a milestone that will support a stronger round. The valuation cap and discount determine the return, since they set how much equity the note ultimately buys.
Yes. A convertible note is legally debt, so the investor can demand repayment of principal and accrued interest if it reaches maturity without converting. In practice, this is uncommon, because startups at that stage rarely hold enough cash to repay and investors generally prefer an extension or a negotiated conversion to forcing a company into default. Repayment is more likely in a change-of-control situation, where many notes give the investor a choice between taking a repayment multiple, often 1x to 2x the principal, or converting into shares before the sale completes.
Convertible debt financing is a form of startup fundraising where investors provide capital through a loan, a convertible note, that converts into equity at a future priced round, typically at a discount or capped valuation, instead of being repaid in cash.
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