When Convertible Notes Mature: Extensions, Conversions and Hard Conversations

Founders sign convertible notes thinking of them as early equity with the paperwork deferred. That is roughly how they behave — right up until the maturity date.

A convertible note is a loan. It has a principal amount, an interest rate and a date on which it becomes due and payable. If no priced round has happened by then, the company owes money it almost certainly does not have.

This is one of the most predictable crises in early-stage finance, and one of the most avoidable. This guide covers what actually happens at maturity, how extensions are negotiated, what to say to holders, the stacked-note problem, and why SAFEs sidestep the issue entirely.

1. What Maturity Actually Means

A typical note converts automatically into equity on a qualified financing — a priced round above a defined size — at a discount, a valuation cap, or the better of the two.

The failure case is when no qualified financing occurs before maturity, and this is far more common than founders expect. Notes are frequently written with 18 or 24 month terms by founders who assume a Series A within a year.

At maturity, depending on the document, one or more of the following applies:

• Principal and accrued interest become due and payable. The default position in most notes.
• Optional conversion at the holder's election, usually at the cap or a stated valuation, if the note provides for it.
• Automatic conversion at maturity into common or a defined preferred series — a founder-friendly provision that far too few notes contain.
• Extension by consent, usually of a majority in interest of holders.

If the note is simply payable and the company cannot pay, the company is in default. In principle holders can demand repayment, accelerate, and in an insolvency stand ahead of every equity holder. In practice they rarely do — a defaulted early-stage company has nothing worth taking — but the leverage has shifted entirely, and everything that follows is negotiated from that position.

2. Read Your Own Documents First

Before speaking to anyone, establish the facts. Founders routinely misremember these.

• The exact maturity date of every outstanding note. Different notes frequently have different dates.
• What happens at maturity — payable, optionally convertible, automatically convertible?
• Who can amend, and by what threshold. Most notes permit amendment by a majority in interest, which means you do not need unanimity to extend — an enormously useful fact.
• The interest rate, and whether interest converts or is payable in cash.
• The qualified financing threshold. If it is set at a size you cannot reach, your notes will not convert even when you do raise.
• Any most-favoured-nation clauses, which may give earlier holders the benefit of better terms you give later ones — this matters enormously when negotiating extensions.
• Change of control provisions — what holders receive if you are acquired before conversion, commonly a multiple of principal or conversion at the cap.

3. The Options, Realistically

Close a priced round

The clean answer. Notes convert as designed and the problem disappears. If you are within reach of a round, maturity pressure is a reason to move rather than a reason to renegotiate.

Extend

The most common outcome. Holders agree to push the date out, generally in exchange for something. Requires the amendment threshold, not unanimity, in most documents.

Convert at a negotiated price

Rather than extending, agree a conversion now into a defined series. This cleans up the cap table and removes the debt. Requires agreeing a valuation, which is exactly the conversation the note was written to avoid — but is frequently better than carrying the overhang.

Repay

Rare, but real for companies that became profitable or found revenue and would rather not dilute. Worth remembering that this is a genuine option and occasionally the cheapest one.

Restructure

Where multiple notes with incompatible terms have accumulated, a comprehensive clean-up — converting everything into one series at an agreed price — may be the only way to make the company fundable. This sits close to the territory covered in our guide to down rounds and recapitalizations.

4. Negotiating an Extension

Start six months out. This is the single most important piece of advice here. Holders approached early, with a clear plan and honest numbers, extend readily. Holders contacted three weeks before maturity conclude — correctly — that they were not being kept informed, and negotiate accordingly.

What holders typically want in exchange:

• A lower valuation cap, improving their conversion terms. The most common ask.
• A larger discount to the next round price.
• A higher interest rate for the extended period.
• Warrants, giving upside beyond the conversion.
• Information rights, if they have been receiving nothing — a request that is usually reasonable and cheap to grant.
• Pro rata rights in the eventual priced round — see our guide to pro rata rights.

Practical guidance:

• Ask for a long enough extension. Twelve to eighteen months, not six. You do not want this conversation twice, and a second extension is negotiated from a weaker position than the first.
• Treat holders consistently. Different terms to different people creates resentment and may trigger most-favoured-nation clauses that apply your best terms to everyone anyway.
• Bring a plan, not a request. What has changed, what the money achieved, what the milestone to a priced round is, and what runway you have.
• Identify the majority in interest early. Securing the largest holders first makes the remainder straightforward.
• Use counsel. Amendments must comply with the amendment provisions exactly, and a defective amendment is worse than none.

5. What to Actually Say to Holders

Founders dread this conversation and therefore delay it, which is precisely what turns a routine amendment into a confrontation. A few things make it go considerably better.

Lead with the fact, not the ask. Open with the maturity date and the position — “your note matures in February, we will not have closed a priced round by then, and I want to agree how we handle it now rather than in January.” A holder who hears the problem stated plainly by the founder reads competence. A holder who works it out themselves reads avoidance.

Show the runway honestly. Current cash, monthly burn, months remaining, and what happens at the end of them. Understating the pressure is tempting and always backfires, because the holder will see the real numbers eventually and will then re-read everything else you said.

Explain what the money bought. The note funded something. Say what it achieved, including the parts that did not work. Holders are far more willing to extend for a founder who can articulate what they learned than for one presenting an unbroken narrative of success that the maturity date contradicts.

Name the milestone that unlocks the round. Not “we hope to raise next year” but the specific thing that makes you fundable — a revenue level, a product release, a regulatory clearance — and when you expect to reach it. Then ask for an extension that comfortably clears that date with margin.

Say what you are offering. Arriving with a proposed package — a revised cap, information rights, pro rata — is far stronger than asking what they want. It signals you have thought about their position, and it anchors the negotiation.

Talk to the largest holder first, alone. If the biggest holder agrees, you have most of your majority in interest and a reference point for everyone else. Approaching everyone simultaneously with an open question produces a negotiation with several counterparties at once, which is the hardest version of this.

Then put it in writing, the same day. A short email summarising what was discussed and agreed. Memories of these conversations diverge, and the amendment will be drafted weeks later from whatever people believe was said.

6. The Stacked Note Problem

Companies that raise repeatedly on notes accumulate layers — different caps, different discounts, different maturity dates, different most-favoured-nation clauses.

Two consequences:

Conversion arithmetic becomes unpredictable. When a priced round finally happens, several instruments convert simultaneously at different prices. Founders regularly discover they own far less post-conversion than they modelled, because they used a single blended assumption rather than converting each instrument on its own terms. Model each note individually — cap table software will do it correctly if you enter the terms accurately, as our comparison of cap table platforms notes.

New investors get uncomfortable. A lead looking at a company with six note layers, one already matured and two maturing next quarter, sees a negotiation with existing holders that must be resolved before they invest. Frequently they will require the notes to be cleaned up as a condition of closing — which means you conduct that negotiation with a deadline and a watching investor.

The lesson: notes are for bridging to a round, not for serial financing. Three consecutive note rounds is a signal that the priced round conversation is being avoided rather than deferred.

7. Why SAFEs Sidestep This

A SAFE is not debt. It has no maturity date, no interest, and no repayment obligation. It converts on a qualified financing, and if that never happens it simply sits there.

That eliminates the maturity crisis entirely, which is the single strongest argument for SAFEs over notes and the main reason they became dominant at early stage.

The trade-offs are real. Because a SAFE never matures, there is no forcing event — no moment that compels a conversation about a priced round. Some investors prefer notes precisely because maturity gives them a seat at the table. And a SAFE holder has no creditor claim in an insolvency, which is worse for them and better for you.

Our comparison of convertible notes versus SAFEs works through the choice in detail. Note also the tax consequence: neither instrument starts the QSBS holding period until it converts into actual stock, which is a genuine cost of leaving instruments outstanding for years.

8. Preventing the Problem

• Negotiate longer maturities at issuance. Twenty-four to thirty-six months rather than twelve to eighteen. This costs almost nothing at the time and is difficult to obtain later.
• Include automatic conversion at maturity into a defined series at a stated valuation. Many investors accept it; very few founders ask.
• Set a realistic qualified financing threshold. A threshold set above what you will plausibly raise means the notes do not convert when they should.
• Track maturity dates centrally, with reminders twelve and six months out.
• Send investor updates to noteholders. Holders who have followed your progress for two years extend without drama. Holders who have heard nothing since they wired the money do not.
• Use SAFEs where the choice is yours, unless there is a specific reason a note is better.

Frequently Asked Questions

What if a noteholder refuses to extend?

Check your amendment provisions — most notes allow amendment by a majority in interest, which binds dissenting holders. If a single holder can block, you are negotiating with them individually. Options include repaying that one note, converting it separately on agreed terms, or in a genuine impasse, taking advice on the company's position.

Does accrued interest convert into equity?

Usually yes, increasing the principal that converts and therefore the dilution. Two years at 6% on a substantial note is a meaningful number, and it is routinely omitted from founder models.

Can we just ignore the maturity date?

Companies do, and holders frequently take no action. But the note is in default, which must be disclosed in diligence, and it gives holders a claim they can assert at any time — including at the least convenient moment, such as during a financing or an acquisition. Fix it rather than hoping.

What happens to notes in an acquisition before conversion?

The change of control provision governs. Common structures give holders the greater of a multiple of principal or conversion at the cap. Read this before you sign an LOI, because it affects what selling shareholders actually receive — see our guide to selling your startup.

Should we tell new investors about matured notes?

Yes, and proactively. They will find them in diligence, and disclosure that arrives late is far more damaging than the underlying problem. Most leads are entirely willing to help structure a clean-up as part of their round — provided they learn about it early.

Does a note in default affect the directors personally?

It can, and it is worth understanding rather than discovering. As a company approaches insolvency, directors' duties begin to take creditors' interests into account, and a matured unpaid note makes the holder a creditor. That does not mean personal liability follows automatically — it means decisions taken in that period are judged against a different standard, and board process matters more than usual. Take advice if you are operating with defaulted debt and limited runway, and make sure your D&O cover is current.

Can we extend some notes and repay others?

Yes, and sometimes it is the cleanest route — repaying one small holder who will not agree can be cheaper than the alternatives. Two cautions. Check for most-favoured-nation clauses, because differential treatment can propagate. And be careful about the optics and the fairness of paying one creditor while others wait, particularly if the company's solvency is genuinely uncertain; that is a question for counsel rather than a judgement call.

What if the holder has died or the entity has dissolved?

More common than expected over a multi-year note. The interest passes to an estate or a successor, and you need to identify who now has authority to consent to an amendment. Start early, because probate and entity records move slowly, and an untraceable holder can block a clean-up you need for a financing. This is also a reason to keep contact details current for every holder rather than relying on the address on a document signed three years ago.

How do noteholders view an extension request in practice?

Usually pragmatically. A holder facing a company that cannot repay has two realistic choices — extend and preserve the option, or force a default and recover nothing — and most understand that arithmetic perfectly well. What determines the terms is not their legal position but their read on you: whether they have heard from you regularly, whether the plan is credible, and whether they believe the next conversation will be better than this one. That is why the update discipline matters more than the negotiation itself.

The Bottom Line

A convertible note is debt with a date on it. Read your documents now, know every maturity date, and start the extension conversation six months out with a plan rather than a request.

At issuance, negotiate longer maturities and automatic conversion. And if the choice is available, a SAFE removes this failure mode entirely.

Global Capital Network connects founders with investors and the counsel who handle these clean-ups. See upcoming events or get in touch.

This article is general information, not legal advice. Note terms vary substantially between documents. Have counsel review your own instruments before acting.