The fiduciary duty of care requires anyone managing another person’s affairs or assets to make informed, deliberate decisions using the diligence a reasonable person would apply in the same situation. It is one of two core fiduciary obligations, sitting alongside the duty of loyalty, and it governs how a decision is made rather than whose interests it favors. A director who approves a merger after skimming a single page of a hundred-page report has not stolen anything, but they have still breached this duty by failing to inform themselves.
What the Duty Requires
The Model Business Corporation Act, which has shaped corporate law in most states, frames the duty around three obligations. A fiduciary must act in good faith, with the care a person in a similar position would reasonably find appropriate under the circumstances, and in a manner they reasonably believe serves the beneficiary’s best interests. These prongs work together. Good faith without diligence is not enough, and diligence without honest intent does not satisfy the standard either.
In practice, this means gathering and evaluating all material information reasonably available before making a significant decision. A board voting on an acquisition should review financial projections, consult legal and financial advisors, consider alternative strategies, and weigh the risks. A trustee selecting investments should analyze market conditions, the beneficiary’s needs, and the portfolio’s overall balance. The standard does not demand perfection. It demands a reasonable process.
How It Differs From the Duty of Loyalty
The duty of loyalty asks whether the fiduciary put the beneficiary’s interests ahead of their own. It targets self-dealing, hidden conflicts, and diverted opportunities. The duty of care asks a different question: did you do your homework before making that decision?
The distinction matters because the legal consequences diverge sharply. Courts and legislatures have made it far easier for fiduciaries to shield themselves from duty of care liability than from duty of loyalty claims. Exculpation provisions and the business judgment rule can effectively immunize a careful fiduciary from monetary damages for honest mistakes. No such escape hatch exists for disloyalty.
The Prudent Person Standard
The benchmark is objective: what would a reasonably careful person in a similar position have done? This “prudent person” standard prevents fiduciaries from defending themselves by claiming they personally did not know any better. The question is not what you thought was adequate diligence. It is what a competent person handling the same responsibilities would have done.
For trustees managing investment portfolios, this standard has been codified in the Uniform Prudent Investor Act, adopted in some form by every state. Trustees must invest and manage trust assets as a prudent investor would, exercising reasonable care, skill, and caution. Individual investments are evaluated not in isolation but as part of the overall portfolio strategy, and trustees must consider general economic conditions, inflation, tax consequences, the beneficiary’s other resources, and liquidity needs.1Legal Information Institute. Prudent Investor Rule A trustee who concentrates the entire portfolio in a single speculative stock has not just made a bad bet. They have breached the duty of care by ignoring diversification.
Fiduciaries who possess special skills or were appointed because of claimed expertise face a heightened version of this standard. A professional investment manager is measured against what a prudent professional in that field would do, not what an ordinary layperson might consider sufficient. The Uniform Prudent Investor Act makes this explicit. A trustee with special skills, or one who represented having them, has a duty to use those skills in managing the trust.
Relying on Professional Advice
Fiduciaries are not expected to be experts in every field. Under Delaware law, which influences corporate governance nationwide, a board member is protected when relying in good faith on reports and opinions from corporate officers, board committees, or outside professionals whose competence the director reasonably trusts and who were selected with reasonable care.2Delaware Code Online. Title 8, Chapter 1, Subchapter IV – Directors and Officers The MBCA contains a parallel provision covering reliance on employees, legal counsel, accountants, and board committees.
The key limitation is that reliance becomes unwarranted if the fiduciary has independent knowledge suggesting the expert’s advice is wrong. You cannot hide behind an advisor’s opinion when you already know the facts point the other direction.
Documentation and Deliberation
Courts routinely look at board minutes, meeting records, and internal memos to determine whether a fiduciary actually engaged in a deliberative process. Well-prepared minutes reflecting presentations received, questions asked, alternatives considered, and the reasoning behind a final vote serve as strong evidence that the duty was met. The goal is to show an informed decision, not necessarily the right one. Fiduciaries who skip meetings, rubber-stamp proposals without discussion, or fail to document their reasoning leave themselves exposed to claims of gross negligence.
The Business Judgment Rule
The business judgment rule is the most important shield available to corporate fiduciaries facing duty of care claims. It creates a presumption that directors who make a business decision acted on an informed basis, in good faith, and in the honest belief that the decision served the company’s best interests.3Justia Law. Smith v Van Gorkom When the presumption holds, courts will not second-guess the decision, even if it turns out badly.4Delaware Corporate Law. The Delaware Way – Deference to the Business Judgment of Directors Who Act Loyally and Carefully
Three conditions must be met. Directors must have no personal financial interest in the decision, they must have informed themselves to the extent they reasonably believed appropriate, and they must have rationally believed the decision served the corporation’s interests. Lose any one of these, and the presumption collapses. A board member who voted on a deal without reading the key documents, or who stood to profit personally from the transaction, cannot invoke the rule.
The 1985 Delaware Supreme Court decision in Smith v. Van Gorkom established what happens when directors fail this test. The Trans Union board approved a $55-per-share cash-out merger after a two-hour meeting based on a twenty-minute oral presentation by the CEO. No written summary was distributed and no independent valuation was conducted. The court held that the approval was not the product of an informed business judgment and that the directors were grossly negligent, setting gross negligence as the standard for measuring whether a board decision was truly informed.3Justia Law. Smith v Van Gorkom
Exculpation Provisions
After Van Gorkom, Delaware’s legislature added Section 102(b)(7) to its corporate code, allowing companies to include a charter provision that eliminates directors’ personal liability for monetary damages for breaching the duty of care.5Delaware Code Online. Title 8, Chapter 1, Subchapter I – Formation Delaware later expanded this protection to officers. The vast majority of public companies incorporated in Delaware have adopted these provisions.
The protection has clear boundaries. Exculpation cannot cover breaches of the duty of loyalty, acts or omissions not in good faith, intentional misconduct, knowing violations of law, or transactions where the director derived an improper personal benefit.5Delaware Code Online. Title 8, Chapter 1, Subchapter I – Formation For officers, exculpation does not extend to claims brought by or on behalf of the corporation itself. The practical result is that for most public companies, duty of care claims seeking monetary damages are effectively dead on arrival. This has shifted the center of gravity in fiduciary litigation toward the duty of loyalty, where exculpation does not apply. Trustees, executors, guardians, and other non-corporate fiduciaries rarely benefit from comparable protection, and personal liability for careless management remains a real risk for them.
The Ongoing Duty to Monitor
Beyond individual business decisions, the duty of care imposes an ongoing obligation on corporate boards to monitor what is happening inside the company. This oversight duty, shaped by the Delaware Chancery Court’s decision in In re Caremark International Inc. Derivative Litigation, requires boards to implement and maintain reasonable information and reporting systems so that legal compliance problems and operational risks surface before they become crises.6Justia Law. In re Caremark Intern, Inc. Derivative Litigation
Liability under Caremark requires more than a bad outcome. A plaintiff must show either that the board completely failed to implement any reporting system, or that the board consciously failed to monitor an existing system. Courts describe this as requiring a “sustained or systematic failure” amounting to bad faith, not merely an oversight that slipped through an otherwise functioning compliance program.
The duty has teeth when clear warning signs emerge. Complaints from regulators, internal reports flagging compliance problems, or patterns of grievances tied to the company’s core operations can constitute red flags that trigger a board’s obligation to investigate. A food manufacturer that ignores repeated safety violations, or a financial institution that receives regulatory warnings about lending practices and does nothing, risks crossing the line from poor judgment into conscious disregard.
The Duty of Care Outside the Boardroom
The duty applies well beyond corporate directors and officers. The standard varies by role, but the core obligation is the same: make informed, careful decisions on behalf of the person or entity relying on you.
Trustees
A trustee must administer the trust as a prudent person would, considering the trust’s purposes, terms, distribution requirements, and other circumstances, while exercising reasonable care, skill, and caution. The Uniform Trust Code, adopted in the majority of states, codifies this standard and requires trustees to verify relevant facts before making investment and management decisions. Failing to diversify, ignoring a beneficiary’s distribution needs, or concentrating assets in speculative holdings can all constitute breaches.
ERISA Retirement Plan Fiduciaries
Federal law imposes its own duty on anyone managing retirement plan assets. Under ERISA, a plan fiduciary must act “with the care, skill, prudence, and diligence under the circumstances then prevailing that a prudent man acting in a like capacity and familiar with such matters would use in the conduct of an enterprise of a like character and with like aims.”7Office of the Law Revision Counsel. 29 USC 1104 – Fiduciary Duties The phrase “familiar with such matters” is deliberate. ERISA fiduciaries are measured against professionals who understand retirement plan management, not everyday investors.
Department of Labor regulations require fiduciaries selecting plan investments to give appropriate consideration to the role each investment plays in the overall plan portfolio, the risk of loss versus opportunity for gain, and how it compares to reasonably available alternatives.8eCFR. 29 CFR 2550.404a-1 – Investment Duties The duty does not end at selection. Hiring and monitoring service providers is itself a fiduciary function, requiring documented selection processes and formal review at reasonable intervals.9U.S. Department of Labor. ERISA Fiduciary Advisor Unlike corporate law, ERISA has no exculpation provision that lets fiduciaries off the hook for carelessness.
Executors and Estate Administrators
Executors collect the deceased person’s assets, pay outstanding debts and taxes, and distribute remaining property according to the will. Throughout this process, they owe a duty of care to the estate’s beneficiaries. An executor who delays liquidating a volatile asset, fails to file tax returns on time, or neglects to secure property can be held personally liable for resulting losses.
Partners
In a general partnership, each partner owes a duty of care to the partnership and the other partners. The Revised Uniform Partnership Act, adopted in most states, defines this duty narrowly. A partner must refrain from grossly negligent or reckless conduct, intentional misconduct, and knowing violations of law. Ordinary carelessness by a partner does not automatically create liability.
Agents Under a Power of Attorney
An agent acting under a power of attorney must exercise the care, competence, and diligence that agents in similar circumstances would ordinarily use. The Uniform Power of Attorney Act, adopted in a majority of states, holds agents with special skills, or those who represented having them, to a higher standard. An accountant managing an elderly parent’s finances under a power of attorney faces a stiffer benchmark than a family member with no financial background.
Guardians and Conservators
Guardians and conservators manage the personal affairs and finances of individuals who cannot do so themselves. A guardian must exercise reasonable care, diligence, and prudence on behalf of the person under guardianship, maintain regular contact to understand their needs, and monitor the quality of care being provided. A conservator managing financial assets must invest as a prudent investor would. Both roles require the fiduciary to promote the individual’s self-determination to the extent feasible.
Nonprofit Board Members
Directors of charitable organizations face a duty of care that mirrors the corporate standard in most respects. For institutions managing endowment funds, the Uniform Prudent Management of Institutional Funds Act, adopted in every state except Pennsylvania, provides the legal framework and allows a board to spend from an endowment as much as it determines to be prudent, subject to specific factors including the fund’s duration, the institution’s purposes, economic conditions, inflation, expected total return, and the organization’s investment policy.
Consequences of a Breach
Available remedies depend on the fiduciary relationship and the jurisdiction. Compensatory damages measure the difference between the actual value of the assets and what they would have been worth had the fiduciary acted properly. Disgorgement forces the fiduciary to surrender any profits gained through the breach. Courts can also remove a fiduciary, appoint a replacement, and in trust contexts impose a “surcharge” requiring the trustee to personally restore losses to the trust estate.
Under ERISA, personal liability is direct. A breaching fiduciary must restore all plan losses and return any profits made through misuse of plan assets, and courts have broad authority to impose whatever additional equitable relief they find appropriate, including removal.10Office of the Law Revision Counsel. 29 USC 1109 – Liability for Breach of Fiduciary Duty In corporate settings, exculpation provisions mean that duty of care claims against public company directors rarely result in monetary damages. The more common outcome is injunctive relief or a shift in the standard of judicial review that forces directors to prove the challenged transaction was entirely fair.4Delaware Corporate Law. The Delaware Way – Deference to the Business Judgment of Directors Who Act Loyally and Carefully For fiduciaries outside the corporate setting, personal liability for careless management remains enforceable and real.