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Convertible Note Reached Maturity Date Cannot Repay: United States Startups Guide

When a convertible note hits maturity without a qualifying financing round or cash to repay it, a startup faces an immediate default risk. Because convertible notes are legal debt instruments rather than pure equity, founders must quickly leverage amendment thresholds, negotiated equity conversions, or standstill agreements before noteholders accelerate the debt or assert creditor remedies under United States corporate law.

The Legal Status of Matured Convertible Notes Under United States Law

In the United States, convertible promissory notes are fundamentally debt obligations governed by state contract law, commercial paper rules, and the corporate laws of your state of incorporation (most commonly the Delaware General Corporation Law, or DGCL). When a convertible note reaches its stated maturity date without triggering a qualified equity financing, the debt becomes immediately due and payable upon demand by the holder, including the principal balance plus any accrued interest.

Unlike standard equity investments, an unpaid mature note is a legal default unless the contract explicitly provides for automatic conversion at maturity. Under Delaware corporate precedent, such as North American Catholic Educational Programming Foundation, Inc. v. Gheewalla, 930 A.2d 92 (Del. 2007), directors owe fiduciary duties to the corporation for the benefit of its shareholders while solvent, but once the startup enters actual insolvency, creditors gain standing to bring derivative claims against directors for breaches of fiduciary duty. This makes ignoring a matured debt an acute corporate governance and liability issue for the board of directors.

Contractual Defenses, Majority Consents, and Restructuring Options

Founders should not assume that an inability to pay means immediate corporate death. Most institutional convertible note agreements, including the National Venture Capital Association (NVCA) model notes and standard Series Seed debt forms, contain amendment and waiver provisions governed by a 'Majority-in-Interest' threshold. This clause typically permits holders of at least 50% or 66.7% of the aggregate outstanding note principal to amend the maturity date or force an equity conversion across all noteholders, binding dissenters.

If your note agreement lacks a majority amendment provision, each individual noteholder possesses a separate claim. In that scenario, the board must approach noteholders directly with a restructuring proposal. Common resolutions include extending the maturity date by 12 to 24 months in exchange for a lower conversion cap or interest rate bump, executing an optional conversion into common or series seed preferred stock at an agreed valuation, or rolling the debt into a post-money Simple Agreement for Future Equity (SAFE).

Creditor Remedies, Insolvency Risks, and Immediate Legal Strategy

If negotiations break down and noteholders issue a formal notice of default and acceleration, creditors have several legal remedies. Unsecured noteholders can file a breach of contract lawsuit in state or federal court to obtain a money judgment and seek post-judgment attachment of corporate bank accounts. Under Title 11 of the United States Code (11 U.S.C. § 303), three or more qualifying creditors with undisputed claims can also petition to force the startup into involuntary Chapter 7 liquidation or Chapter 11 reorganization.

If your notes are secured by company assets or intellectual property under Article 9 of the Uniform Commercial Code (UCC), secured noteholders can initiate foreclosure proceedings against the collateral. Founders must act proactively before formal demands are served. You can use Caunsel to research your contractual rights, organize noteholder documents and cap table impacts in a case file, or consult an independent corporate attorney to negotiate a binding omnibus note extension.

Steps

• Audit the original convertible promissory notes and note purchase agreements to identify the exact maturity dates, default interest rates, and majority-in-interest amendment thresholds.
• Verify whether the note contains an express maturity conversion mechanism, such as optional conversion into common stock or preferred stock at the holder's or company's election.
• Convene a formal meeting of the board of directors to record corporate minutes addressing the maturity date, review current company solvency, and evaluate fiduciary duties.
• Prepare a formal note amendment and extension package offering investor incentives, such as an extended maturity window, an increased interest rate, or an adjusted valuation cap.
• Circulate an omnibus amendment and waiver agreement to obtain written consent from the required majority-in-interest before the maturity date expires.

Common mistakes

• Remaining silent and hoping noteholders do not notice the maturity date, which triggers default and forfeits your negotiating leverage.
• Selectively repaying aggressive individual noteholders out of limited cash reserves, which can constitute a preferential transfer under US bankruptcy law if the company subsequently enters insolvency.
• Assuming that convertible notes automatically convert into equity at maturity without checking the specific contractual language.
• Personally guaranteeing the corporate debt or pledging personal assets during maturity extension negotiations without independent legal counsel.
• Attempting to transfer company intellectual property or assets to a new entity, which violates fraudulent transfer statutes under state and federal law.

Questions people ask

Can a single dissident noteholder force our startup into bankruptcy if the majority wants to extend?

Under 11 U.S.C. § 303, an involuntary bankruptcy petition typically requires three or more creditors with non-contingent, undisputed claims totaling statutory thresholds (or one creditor if the startup has fewer than 12 total creditors). However, if your note lacks a majority-in-interest amendment clause, that single dissident can still sue in state court for breach of contract and obtain an enforceable money judgment against company assets.

Are startup founders personally liable if the company cannot pay back a matured convertible note?

Generally no, provided the note was executed solely by the corporation and the founders did not sign personal guarantees. However, founders can face personal liability if they breach fiduciary duties while the company is insolvent, commingle personal and corporate funds, or commit fraudulent transfers to shield assets from noteholders.

What is the difference between an amendment and a maturity conversion?

An amendment modifies the existing contract terms, usually pushing the maturity date further into the future so the debt remains outstanding. A maturity conversion permanently eliminates the debt by converting the principal and accrued interest into shares of the company's common or preferred stock, removing the default risk from the balance sheet.

General information only, last updated 2026-10-19. Caunsel is not a law firm and does not practise law. AI answers and this guide are not legal advice. Verify filings, deadlines, and statutes with a licensed lawyer in United States — Startups.