Contract Terminology/Fiduciary Duty
Legal Duty

Fiduciary Duty

A legal obligation to act in another's best interests - the highest standard of care in law.

While straightforward in theory, many businesses fail to actively track obligations tied to this concept - often resulting in missed deadlines, unintended renewals, penalties, or loss of contractual rights.

US Law  ·  For business owners and founders

Legal disclaimer: This page is for informational purposes only. It does not constitute legal advice. Contract law varies by state and circumstance. Always consult a qualified US attorney before signing or drafting any contract.

What is a Fiduciary Duty?

A fiduciary duty is the highest legal obligation one party can owe another. A fiduciary is someone entrusted to act on behalf of another person - and must put that other person's interests above their own. The law imposes this duty whenever a relationship involves trust, dependence, and the power to act on someone else's behalf.

In business, fiduciary duties most commonly arise for corporate directors and officers, general partners in a partnership, managing members of an LLC, attorneys representing clients, and financial advisors managing assets. Breaching a fiduciary duty can result in personal liability, forced disgorgement of profits gained at the beneficiary's expense, and removal from the fiduciary role.

In practice, many teams rely on a contract expiry tracking system to stay on top of dates and obligations tied to clauses like this.

Key Elements
Duty of Loyalty
Requires the fiduciary to act in the best interests of the beneficiary - not in their own interest. This means disclosing and avoiding conflicts of interest, not self-dealing, not taking corporate opportunities for personal gain, and not competing against the entity they serve.
Duty of Care
Requires the fiduciary to make decisions with the care a reasonably prudent person would exercise in a similar position. For corporate directors, this means being informed before voting, attending meetings, reviewing materials, and seeking expert advice when needed.
Duty of Disclosure
Fiduciaries must disclose all material information relevant to the beneficiary's decisions. Withholding information that affects a business decision - like a conflict of interest in a transaction - can itself be a breach.
Business Judgment Rule
Courts give corporate directors and officers significant deference when they make informed, good-faith business decisions. The business judgment rule protects fiduciaries from personal liability for bad outcomes as long as the decision was reasonably informed and made in good faith - not to enrich themselves at the company's expense.
Fiduciary Duty in LLCs and Partnerships
In partnerships and many LLCs, general partners and managers owe fiduciary duties by default. In most states, LLC operating agreements can contractually modify or waive some fiduciary duties - but courts scrutinize those waivers carefully. Delaware allows significant customization; other states are more restrictive.
Real-World Example
Scenario

Marcus is the CEO of a software startup. A commercial real estate company approaches Marcus personally - not the startup - with a licensing deal for the startup's core technology. Marcus negotiates and signs the license in his own name, collecting $200,000 in fees without telling the board. The startup could have signed the exact same deal.

Marcus has breached his fiduciary duty of loyalty by taking a corporate opportunity for personal gain. The startup had a clear interest in that licensing deal. Courts can order Marcus to disgorge the $200,000 to the company, hold him personally liable for any additional losses, and remove him as CEO. This is a textbook self-dealing violation. The proper course would have been to disclose the opportunity to the board and allow the company to evaluate it first.

This is why many businesses adopt automated deadline tracking to ensure no critical dates are missed before they pass.

Watch Out For
Conflicts of interest not disclosed to the board
Directors and officers who have a personal financial interest in a transaction the company is considering must disclose that conflict and recuse from the vote. Participating without disclosure is a breach of the duty of loyalty, regardless of whether the deal was fair.
Assuming fiduciary duties have been waived in your LLC agreement
Many founders include boilerplate LLC operating agreements that purport to waive fiduciary duties. Whether those waivers are enforceable depends on your state's law and how the waiver is drafted. Do not assume you have no obligations just because your operating agreement says so.
Co-founder or investor agreements that create competing loyalties
A board member who also sits on a competitor's board has a potential conflict of interest. Fiduciary duty requires them to manage that conflict carefully - including recusing from discussions that could benefit the competitor.
Don't let fiduciary duty deadlines catch you off guard

Key dates tied to fiduciary dutys - renewal windows, expiry cutoffs, notice periods - can easily slip through the cracks when tracked manually. Missing them triggers automatic extensions, penalties, or lost rights. ExpiryEdge tracks every critical deadline and sends automated reminders before they're due - so nothing slips.

Instead of relying on spreadsheets or manual follow-ups, a centralized renewal reminder system ensures every deadline is visible, tracked, and actioned automatically.

How to Use This in Your Favor
Adopt a conflict of interest policy for your board
Require directors and officers to annually disclose all outside business interests and to flag conflicts before any board vote. A clear written policy provides a process for managing conflicts and creates a record showing the company took fiduciary obligations seriously.
Document board deliberations on major decisions
The business judgment rule protects informed decisions made in good faith. Keep thorough minutes showing that directors reviewed relevant materials, asked questions, and voted with the company's interest in mind. Sparse records make it harder to defend against breach of fiduciary duty claims.
Use D&O insurance to protect directors and officers
Directors and Officers liability insurance covers defense costs and damages from claims alleging breaches of fiduciary duty. For any company with outside directors or investors on the board, D&O insurance is essential.
Frequently Asked Questions

Generally no - shareholders do not owe fiduciary duties to each other simply by owning stock. However, controlling shareholders can owe a duty of fairness to minority shareholders when they use their control to benefit themselves at the minority's expense. This is particularly relevant in closely held corporations.

As shareholders alone, generally no. But if co-founders are also directors or officers of the company, they owe fiduciary duties in those roles. In a general partnership, all partners owe fiduciary duties to each other by default.

Yes, this is a real tension. A venture capital partner on a portfolio company's board owes fiduciary duties to the company's stockholders. But they also owe duties to their fund's limited partners. When a transaction benefits one and not the other - like a sale at a low valuation - conflicts can arise. Many VC-backed companies have experienced these tensions during acquisitions.

A contractual duty arises from an agreement - you promised to do something, and the other side can hold you to it. A fiduciary duty is imposed by law based on the nature of the relationship, regardless of what the contract says. The standard is much higher: you must actively prioritize the other party's interests.

Quick Facts
StandardHighest duty of care in US law

Core ObligationsDuty of loyalty and duty of care

Common ContextsCorporate directors, officers, partners, attorneys, financial advisors, trustees

Breach ConsequencePersonal liability, disgorgement of profits, damages

Can Be Waived?Partially in some states by contract (e.g., LLC agreements), but not entirely
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