The 5 fiduciary duties are loyalty, care, obedience, disclosure, and accounting. Together they describe what the law expects from anyone trusted to manage another person’s money, property, or affairs: put the principal’s interests first, act with competence, stay within the authority you were given, share the facts that matter, and keep clean, separate records. When any of these obligations breaks down, courts can order the fiduciary to pay damages, return profits, undo the transaction, or step down from the role.
Who Owes These Duties
Fiduciary duties attach whenever one person holds a position of trust and control over another’s interests. The relationships most often recognized include:
- Trustee and beneficiary
- Executor or personal representative and the heirs of an estate
- Attorney and client
- Corporate director or officer and the company and its shareholders
- Court-appointed guardian and the minor or incapacitated adult in their care
- Registered investment advisor and the client whose money they manage
A fiduciary relationship can also arise informally when one person places special confidence in another and that person accepts the responsibility. Courts look at the actual nature of the relationship, not just whether anyone signed a formal agreement.
Duty of Loyalty
Loyalty is the most fundamental of the five. It requires the fiduciary to act solely for the principal’s benefit in every matter connected to the relationship. Under the Restatement (Third) of Agency, an agent has a duty to act loyally for the principal’s benefit, meaning the fiduciary’s own financial interests always take a back seat.
Self-dealing is the most common violation. It happens when a fiduciary uses the position to gain a personal profit or advantage from a transaction involving the principal’s assets. A trustee who sells trust property to themselves at below-market value, or an executor who loans estate funds to their own business, is self-dealing. Even when the fiduciary believes the terms are fair, courts scrutinize these transactions heavily.
Conflicts of interest trigger a related obligation. When a conflict exists, the fiduciary must either eliminate it or disclose it fully so the principal can decide whether to consent. Transactions tainted by undisclosed conflicts can be voided, and any profits the fiduciary earned may be stripped away through disgorgement, which forces the fiduciary to return every dollar gained through the conflicted transaction even if the principal suffered no direct financial loss.
The Corporate Opportunity Doctrine
Corporate directors and officers face a specific application of the loyalty duty. When a business opportunity arises that falls within the company’s line of work, a fiduciary generally cannot take it personally without first offering it to the corporation. Courts weigh several factors:
- Whether the corporation was financially able to pursue the opportunity
- Whether it fell within the corporation’s existing line of business
- Whether the corporation had a legitimate interest or expectation in it
- Whether taking it created a conflict between the fiduciary’s personal interests and duties to the corporation
A fiduciary who takes a corporate opportunity without disclosing it risks being forced to turn over all profits from that venture.
Duty of Care
The duty of care requires fiduciaries to handle their responsibilities with the skill and diligence a reasonably careful person would use in the same situation. That means investigating relevant facts, reviewing available information, and making thoughtful decisions rather than acting on instinct or ignoring warning signs. A fiduciary with specialized expertise, like a licensed financial advisor or attorney, is held to the higher standard of their profession.
Before any significant decision, a fiduciary must gather the material information reasonably available. For a corporate director, that means reviewing financial statements, consulting advisors, and giving the decision enough time and attention. For a trustee, it means understanding the terms of the trust, the beneficiaries’ needs, and the risks of any investment. Skip the homework and cause financial harm, and the fiduciary can be held personally liable for the resulting losses.
The Prudent Investor Standard
Trustees who manage investments are held to the prudent investor standard, which evaluates their performance based on the overall portfolio rather than any single investment. Under the Uniform Prudent Investor Act, adopted in some form by most states, trustees must diversify trust investments unless special circumstances justify a concentrated position. The Act also requires trustees to weigh risk and return objectives, the beneficiaries’ needs, inflation, tax consequences, and liquidity when building an investment strategy.
The Business Judgment Rule
Corporate directors get an important layer of protection. Not every bad business outcome means a director breached the duty of care. Under the business judgment rule, courts will uphold a decision, even one that turns out poorly, as long as the director made it in good faith, with the care a reasonably prudent person would use, and with a reasonable belief that it served the corporation’s best interests. The rule recognizes that business involves risk, and directors should not be second-guessed every time a well-reasoned decision fails.
Reliance on Professional Advice
A fiduciary does not need to be an expert in every field. Directors and trustees can rely on the opinions of attorneys, accountants, and other professionals, as long as the reliance is reasonable. The defense has limits. A fiduciary cannot rely blindly on an expert’s advice when there are obvious warning signs that the advice is wrong, when the expert has a financial stake in the transaction, or when the advice contradicts other information the fiduciary already has.
Duty of Obedience
A fiduciary must follow the lawful instructions given by the principal and stay within the authority set out in the governing document, whether that document is a trust agreement, power of attorney, corporate bylaws, or court order. If a trustee’s authority is limited to managing investments, the trustee cannot use trust funds to start a business. Acting outside the scope of granted authority can make the fiduciary personally responsible for any resulting losses or unauthorized expenses.
The duty has a clear exception. It does not require carrying out illegal instructions. When a principal’s directive would violate the law, such as an instruction to commit fraud, hide assets from creditors, or file false tax returns, the fiduciary must refuse. The same principle applies in a corporate setting when a memo or supervisor’s order conflicts with the law. Refusing an illegal instruction is not a breach of obedience; carrying it out could expose both the fiduciary and the principal to criminal prosecution.
Duty of Disclosure
A fiduciary must proactively share all material facts that could influence the principal’s decisions. That includes potential risks, hidden costs, conflicts of interest, and changes in circumstances that affect the principal’s assets or position. The test is whether a reasonable person in the principal’s shoes would want to know the information before making a decision. The fiduciary cannot selectively filter what gets passed along.
Disclosure also means making sure the principal actually understands the information, not just handing over paperwork. A fiduciary should explain complex documents, flag unusual provisions, and answer questions in plain terms. If a trustee discovers that a trust investment has lost significant value, the duty requires prompt notice to the beneficiaries, not silence until the next scheduled report. Withholding material facts, even by silence rather than active deception, is a breach that can lead to damages and removal.
Duty of Accounting
Every fiduciary must keep the principal’s money and property completely separate from their own. Mixing personal and client funds, known as commingling, is one of the most serious violations a fiduciary can commit, because it makes it impossible to trace what belongs to whom and creates openings for misuse. Attorneys, for example, must hold client funds in a dedicated trust account under professional conduct rules.
Beyond separation, the fiduciary must keep detailed records of every transaction involving the principal’s assets. Income, expenses, transfers, and investment activity should be documented thoroughly enough to create a clear audit trail. National fiduciary accounting standards call for each transaction to be described in enough detail that any interested party can understand its purpose and effect. Extraordinary costs, like special appraisals or tax penalties, should be reported separately with an explanation.
The principal or beneficiary has the right to request a financial accounting at any time, and the fiduciary must be able to produce one. Failure to keep or provide adequate records is one of the most common grounds for a court to remove a fiduciary. In serious cases involving misappropriation, a fiduciary who diverts funds for personal use can face criminal prosecution, with penalties that include prison time under federal statutes governing fiduciary misconduct.
What Happens When a Duty Is Breached
When a fiduciary violates one of the five duties, the remedies are designed to put the injured party back in the position they would have been in without the breach. The most common consequences:
- Monetary damages for the actual financial losses caused by the breach
- Disgorgement of profits, requiring the fiduciary to return every dollar gained through disloyal conduct even if the principal cannot prove a direct financial loss
- Voided transactions, canceling contracts or deals tainted by self-dealing or an undisclosed conflict
- Removal from the fiduciary role, most often for self-dealing, gross mismanagement, failure to account, or violations of a court order
- Criminal prosecution when the misconduct rises to embezzlement or misappropriation; under federal law, a fiduciary who embezzles or misappropriates funds from a beneficiary can be imprisoned for up to five years
Separately, a fiduciary who distributes estate or trust assets to others before paying outstanding government claims, including taxes, can become personally liable for those unpaid amounts up to the value of the distributions made.1Office of the Law Revision Counsel. 31 U.S. Code 3713 – Priority of Government Claims That is why identifying and resolving outstanding debts has to come before any distribution to beneficiaries.