A fiduciary manages money, property, or legal affairs for another person and is legally bound to put that person’s interests ahead of their own. So what does a fiduciary do in practice? They take control of assets, invest or protect those assets prudently, pay legitimate debts in the correct order, file the required tax returns, keep detailed records, communicate with beneficiaries, and make discretionary decisions guided by the governing document. Every one of those tasks carries personal financial liability if it is handled carelessly or dishonestly.
The Two Duties Behind Every Fiduciary Task
Whatever title a fiduciary holds, two obligations shape the role: the duty of loyalty and the duty of care.
The duty of loyalty requires acting solely in the beneficiary’s interests, never for personal benefit. Courts have described this standard as demanding far more than ordinary honesty, calling for “the punctilio of an honor the most sensitive.” The clearest violation is self-dealing: a fiduciary who profits from a transaction involving the assets they manage, such as buying estate property below market or steering business to a family-owned company. A fiduciary cannot sit on both sides of a deal, because the two roles have directly opposed interests. If a conflicted transaction is discovered, the beneficiary does not have to prove it was unfair; courts treat it as voidable on the conflict alone, and the fiduciary absorbs any resulting losses.1Federal Deposit Insurance Corporation. Section 8 Compliance/Conflicts of Interest, Self-Dealing and Contingent Liabilities
The duty of care requires managing affairs with the diligence and skill a reasonably careful person would apply in similar circumstances. For investments, most states follow the Uniform Prudent Investor Act, which judges performance on the overall portfolio rather than on any single holding and requires diversification across different types of assets. A single stock that drops in value is not automatically a breach if it was part of a sound overall strategy. A fiduciary without financial expertise can hire a professional advisor; a fiduciary who selects a qualified advisor, provides clear instructions, and monitors their work at reasonable intervals is generally not personally liable for the advisor’s individual decisions.
When a fiduciary fails the duty of care, a court can impose a surcharge, ordering the fiduciary to reimburse the estate or trust from personal funds for losses caused by the negligence.
Taking Control of Assets
One of the first jobs is identifying and locating every account, piece of real estate, and valuable item, then retitling each one into the name of the estate or trust rather than the fiduciary’s personal name. Clear titling prevents later disputes about ownership.
Physical property needs active protection throughout administration. Insurance on real estate, vehicles, and other tangible assets must stay in force. Letting a policy lapse and then suffering a fire or theft loss can expose the fiduciary personally.
Commingling is a hard rule. Personal funds and estate or trust funds must never mix, even temporarily. The estate or trust needs its own bank accounts, used only for its own transactions. A fiduciary who violates this rule can be removed by the court and held personally liable for any losses.
Paying Debts in the Correct Order
Before any beneficiary receives a distribution, the fiduciary identifies and pays the legitimate debts of the estate. That usually means notifying known creditors, publishing a notice to unknown creditors, and allowing a claim window that runs roughly one to seven months depending on the jurisdiction.
Not every debt has equal priority. Federal law requires that when a deceased person’s estate lacks assets to pay all debts, claims owed to the United States government must be paid first. A fiduciary who pays lower-priority debts before government claims can become personally liable for the unpaid federal amount.2Office of the Law Revision Counsel. 31 U.S. Code 3713 – Priority of Government Claims State law layers additional priorities on top, generally putting administration expenses, funeral costs, and family allowances ahead of unsecured debts like credit cards. Paying creditors out of order is one of the easiest ways to incur personal liability, which is why most fiduciaries work with an attorney before writing checks.
Filing the Required Tax Returns
A fiduciary is responsible for several separate tax filings, and penalties for missing any of them can land on the fiduciary personally.
An estate or trust that earns income is a separate taxpayer. Form 1041 must be filed if the estate has gross income of $600 or more during the tax year, or if a trust has any taxable income at all.3Internal Revenue Service. About Form 1041, U.S. Income Tax Return for Estates and Trusts The return covers income, deductions, gains, losses, and any amounts distributed to beneficiaries.4Internal Revenue Service. Instructions for Form 1041 and Schedules A, B, G, J, and K-1 For calendar-year estates and trusts, Form 1041 is due by April 15 of the following year.5Internal Revenue Service. Forms 1041 and 1041-A: When to File A late return triggers a penalty of 5% of the unpaid tax per month, up to 25%. If the return is more than 60 days late, the minimum penalty is the lesser of $525 or the total tax due.
The deceased person also needs a final individual income tax return. The fiduciary files Form 1040 covering January 1 through the date of death, due April 15 of the following year, along with any prior-year returns the decedent never filed.6Internal Revenue Service. Publication 559, Survivors, Executors, and Administrators
If the estate’s total value exceeds the federal estate tax exclusion, which is $15,000,000 for deaths in 2026, Form 706 is due within nine months of the date of death.7Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill An automatic six-month extension is available by filing Form 4768 before that deadline.8Internal Revenue Service. Instructions for Form 706 Some fiduciaries file Form 706 even for estates below the exclusion to elect portability, transferring any unused exclusion to a surviving spouse.
Making Discretionary Decisions
A fiduciary routinely makes significant judgment calls using the authority granted in a will, trust, or power of attorney. Common examples include selling real estate to raise cash for debts or taxes, liquidating investments for cash flow, and choosing which obligations to pay when funds are tight. Every decision has to align with the governing document and applicable law.
Trust documents often give trustees discretion over distributions, commonly phrased as support for a beneficiary’s “health, education, maintenance, and support.” Exercising that discretion means balancing the beneficiary’s current needs against long-term sustainability of the trust and the interests of other beneficiaries. A distribution that clearly violates the trust’s terms can require the fiduciary to repay those funds personally.
Written documentation of the reasoning behind major decisions is the fiduciary’s best defense if a beneficiary later challenges them. Good-faith choices supported by contemporaneous records hold up far better in court than undocumented ones.
Keeping Beneficiaries Informed
A fiduciary owes beneficiaries honest, reasonably prompt information about how the estate or trust is being administered. That means notifying them of the appointment, responding to reasonable requests for information, and providing periodic accountings.
A formal accounting lists income received, expenses paid, distributions made, assets on hand, and their current values. Most states require accountings at least annually and again when the estate or trust closes. Beyond scheduled reports, material changes should be disclosed in advance; if a major asset like real estate is going to be sold, beneficiaries should know before it happens. A fiduciary who hides information or ignores reasonable requests faces liability for breach of duty.
Where the Role Differs by Title
“Fiduciary” covers several specific jobs, and the scope of authority depends on which one a person holds.
- An executor or personal representative is named in a will or appointed by a court to settle a deceased person’s estate: collecting assets, paying debts, filing tax returns, and distributing property.
- A trustee manages assets held in a trust according to the trust’s written terms, often for years, investing funds and making distributions.
- A guardian or conservator is appointed by a court to manage the personal affairs, finances, or both of a minor or an adult who cannot manage their own.
- An agent under a power of attorney is authorized by a principal to make financial or healthcare decisions on the principal’s behalf, usually when the principal becomes incapacitated.
- An ERISA fiduciary exercises discretionary control over a retirement plan’s assets or administration.
The duties of loyalty and care apply in every one of these roles. The particular tasks, deadlines, and governing documents differ.
Fiduciary Compensation
Fiduciaries are generally entitled to be paid for the work. If the will or trust specifies a fee, that controls. Otherwise, the fiduciary receives reasonable compensation based on the complexity of the work, the size of the estate, and the time invested, and a court can adjust the amount if the actual duties turned out materially different from what the document anticipated. Some states use statutory percentage schedules; most apply a reasonable-compensation standard. Fiduciary fees are taxable income to the recipient. Taking excessive compensation without court approval can be ordered reversed and treated as a breach in its own right.
What Happens When a Fiduciary Breaches Their Duties
Courts have a wide range of remedies when a fiduciary falls short, scaled to the severity of the conduct.
- Surcharge, the most common remedy, requires the fiduciary to personally reimburse the estate for losses caused by the breach.
- Disgorgement of profits orders the fiduciary to return any personal gain from a conflicted transaction.1Federal Deposit Insurance Corporation. Section 8 Compliance/Conflicts of Interest, Self-Dealing and Contingent Liabilities
- Voiding transactions sets self-dealing deals aside and restores the estate to its prior position.1Federal Deposit Insurance Corporation. Section 8 Compliance/Conflicts of Interest, Self-Dealing and Contingent Liabilities
- Reduction or denial of compensation cuts or eliminates the fiduciary’s fee.
- Suspension or removal replaces the fiduciary with someone else.1Federal Deposit Insurance Corporation. Section 8 Compliance/Conflicts of Interest, Self-Dealing and Contingent Liabilities
- A constructive trust or lien lets a court trace wrongfully transferred property and impose a claim on it to recover value for beneficiaries.
A fiduciary’s authority ends when the estate is fully administered and assets are distributed under a final court decree, or when the trust terminates by its own terms. Until that point, every decision made during the appointment remains open to review.