Trustee Conflict of Interest Under California Law
Last updated October 9, 2026
The problem
Under Probate Code sections 16002 and 16004, a California trustee must act solely for beneficiaries. What counts as self-dealing and what a court may order.
A trustee has a conflict of interest under California law when a personal stake competes with the duty to run the trust solely for the beneficiaries. Buying trust property, borrowing trust money, or steering trust business to the trustee's own company are typical examples. The conflict itself is not always a breach; what the trustee does with it decides that.
Most people facing this question have noticed something that does not sit right. A sibling serving as trustee has moved into the family house. A trust account shows payments to a business the trustee owns. A co-trustee sold a property and will not say who bought it. The person asking may be a beneficiary, a co-trustee, or a trustee who has been accused, and the question underneath is the same: is this actually against the rules, or does it only feel unfair?
This page explains how California's Probate Code defines a trustee's conflict of interest, the situations where conflicts tend to appear, what the trustee must disclose, what a court may order, and the time limits that apply. It is written for people in or near a dispute, as part of this site's broader coverage of California trust litigation.
What a Trustee Conflict of Interest Means Under California Law
Probate Code section 16002(a) sets the starting rule: "The trustee has a duty to administer the trust solely in the interest of the beneficiaries." This is called the duty of loyalty, and every conflict-of-interest question in California trust law grows out of it.
A trustee is always a fiduciary. A fiduciary is a person who holds money or property for someone else and must act for that person's benefit, not their own. The word "solely" in section 16002 matters. A trustee who acts partly for the beneficiaries and partly for themselves is not meeting the standard.
Probate Code section 16004(a) makes the duty more specific. It provides that "the trustee has a duty not to use or deal with trust property for the trustee's own profit or for any other purpose unconnected with the trust, nor to take part in any transaction in which the trustee has an interest adverse to the beneficiary." An adverse interest means the trustee stands to gain from an outcome that costs the beneficiary something. Self-dealing is the common name for a trustee doing business with the trust on their own behalf.
Two related terms are easy to blur, so it helps to keep them apart:
- A conflict of interest is a situation. The trustee has a personal stake that pulls against the beneficiaries' interests. It describes where the trustee stands.
- A breach of trust is an act or a failure to act. It means the trustee violated a duty owed to the beneficiaries. It describes what the trustee did.
A conflict can exist without a breach, and many disputes turn on whether a conflict ever became one. Section 16005 also addresses a related situation: a trustee may not knowingly become trustee of another trust whose interests run against the first trust's beneficiaries, and must eliminate the conflict or resign when it is discovered.
These duties do not change with who the trustee is. A family member serving without pay, a professional fiduciary, and a bank or trust company all owe the same duty of loyalty under section 16002.
Common Situations Where a Conflict of Interest Arises
Picture a trust that owns a rental house, a brokerage account and a share of a family business. Each of those assets gives a trustee chances to benefit personally, and that is where most conflict disputes begin.
Self-dealing sales. A trustee sells trust property to themselves, a spouse, a child, or a company the trustee controls. Even if the price looks reasonable, the trustee was on both sides of the deal, which is the kind of transaction section 16004(a) addresses.
The trustee who is also a beneficiary. Many California trusts name an adult child as both trustee and beneficiary. That person has a built-in tension. Decisions about when to sell, what to distribute, and how to value property affect their own share and everyone else's at once. The dual role is permitted, but the trustee must still administer the trust for all beneficiaries.
Borrowing or pledging trust assets. A trustee who takes a loan from the trust, or uses trust property as security for a personal debt, is using trust property in a way that can benefit the trustee and expose the trust to risk.
Steering trust business. A trustee who is a real estate agent, accountant, contractor or property manager may hire their own practice, or a company they have money in, to do trust work. The work may be competent, but the trustee is choosing to pay themselves with trust funds.
Deals with a beneficiary. Probate Code section 16004(c) adds a rule for transactions between the trustee and a beneficiary. A transaction "which occurs during the existence of the trust or while the trustee's influence with the beneficiary remains and by which the trustee obtains an advantage from the beneficiary is presumed to be a violation of the trustee's fiduciary duties." The statute calls this "a presumption affecting the burden of proof," which means the trustee, not the beneficiary, carries the burden of showing the transaction was proper. The presumption does not apply to the parts of an agreement between a trustee and a beneficiary about hiring or paying the trustee. A common example is a trustee buying out a sibling's share of an inherited house.
These examples are not a complete list. The duty of loyalty is written broadly, and a court looks at the substance of what happened rather than whether it matches a familiar pattern.
The Duty to Disclose and Keep Beneficiaries Informed
Beyond avoiding conflicts, a California trustee has affirmative duties to tell beneficiaries what is going on. These duties often decide whether a beneficiary ever learns about a conflict.
Probate Code section 16060 provides that the trustee "has a duty to keep the beneficiaries of the trust reasonably informed of the trust and its administration." Section 16061 adds that, except as section 16069 provides, the trustee must respond to a beneficiary's reasonable request by providing requested information about the trust's administration that is relevant to that beneficiary's interest.
The duty to account is narrower. An account is a formal written report of what the trust held, received, spent and distributed. Under Probate Code section 16062(a), and subject to exceptions in that section and in section 16064, the trustee must account at least annually, at the termination of the trust, and upon a change of trustee, to each beneficiary to whom income or principal is required or authorized in the trustee's discretion to be currently distributed. Not every beneficiary is owed an annual account. A beneficiary whose share is entirely in the future, for example, may not fall within that group.
An account can also be waived, either by the trust instrument or by a beneficiary in writing. Section 16064 limits those waivers: regardless of the waiver, "upon a showing that it is reasonably likely that a material breach of the trust has occurred, the court may compel the trustee to account." Section 16062(e) also voids a waiver in the trust instrument as to certain sole trustees the statute describes.
Concealment makes a conflict worse. A trustee who leaves a related-party sale out of an account, or does not answer questions about payments to their own business, may be adding a failure to inform on top of the original problem.
When requests go unanswered, Probate Code section 17200(b)(7) gives a path to court. A beneficiary may petition to compel information under section 16061 if the trustee has failed to provide it within 60 days after the beneficiary's reasonable written request and the beneficiary has not received the requested information within the six months before the request. A beneficiary may petition to compel an account, subject to section 16064, if the trustee has failed to submit a requested account within 60 days after written request and no account has been made within the six months before the request. For beneficiaries who have been asking for months with no answer, this is often the first concrete step the law offers.
What Beneficiaries Can Do When a Conflict Exists
California organizes trust remedies around a breach of trust or a threatened one. Under Probate Code section 16420(a), if a trustee commits or threatens to commit a breach of trust, a beneficiary or cotrustee may start a proceeding for any of these purposes that is appropriate:
- to compel the trustee to perform the trustee's duties;
- to enjoin, meaning stop by court order, the trustee from committing a breach;
- to compel the trustee to redress a breach by payment of money or otherwise;
- to appoint a receiver or temporary trustee to take possession of the trust property and administer the trust;
- to remove the trustee;
- subject to section 18100, to set aside acts of the trustee;
- to reduce or deny the trustee's compensation;
- subject to section 18100, to impose an equitable lien or a constructive trust on trust property;
- subject to section 18100, to trace trust property that has been wrongfully disposed of and recover the property or its proceeds.
A constructive trust is a court order treating property held by someone as belonging to the trust. Section 16420(b) adds that these remedies do not prevent resort to any other appropriate remedy under statute or common law.
The usual vehicle is a petition under Probate Code section 17200(a), which allows a trustee or beneficiary, except as section 15800 provides, to petition the court concerning the internal affairs of the trust or to determine its existence. Section 17200(b) lists many purposes, including settling accounts, instructing the trustee, appointing or removing a trustee, and compelling redress of a breach by any available remedy. That list "include[s], but [is] not limited to" those purposes. A separate page explains the Probate Code 17200 petition in more detail.
Removal. Probate Code section 15642(a) allows removal in accordance with the trust instrument, by the court on its own motion, or on petition of a settlor, cotrustee or beneficiary under section 17200. The grounds in section 15642(b) include a breach of trust, insolvency or unfitness to administer the trust, hostility or lack of cooperation among cotrustees that impairs administration, failing or declining to act, and excessive compensation, among others.
Surcharge. A surcharge is a court order requiring the trustee to pay money back to the trust. Under Probate Code section 16440(a), a trustee who commits a breach of trust is chargeable with whichever of the following is appropriate: any loss or depreciation in value resulting from the breach, with interest; any profit the trustee made through the breach, with interest; or any profit that would have accrued to the trust if the lost profit resulted from the breach. Under section 16440(b), the court may, in its discretion, excuse a trustee who acted reasonably and in good faith under the circumstances known to the trustee, in whole or in part, if it would be equitable to do so.
Double recovery. Probate Code section 859 applies where a court finds that a person has in bad faith wrongfully taken, concealed or disposed of property belonging to a trust or a decedent's estate (among others), or has taken, concealed or disposed of it by undue influence in bad faith or through elder or dependent adult financial abuse. A person found liable on that basis is liable for twice the value of the property recovered by an action under that part, and may, in the court's discretion, be liable for reasonable attorney's fees and costs. None of this follows from a conflict alone; it depends on the court making that finding.
The Statute of Limitations for Breach of Trust Claims in California
Probate Code section 16460(a) sets a three-year limit with two branches, and which branch applies depends on what the beneficiary received.
The first branch applies when a beneficiary has received an interim or final account, or other written report, that adequately discloses the existence of the claim. The claim is barred unless a proceeding is started within three years after the beneficiary receives that account or report. An account adequately discloses a claim if it gives enough information that the beneficiary knows of the claim or reasonably should have inquired into it.
The second branch applies when no account or report adequately discloses the claim, or the beneficiary receives no written account or report at all. The claim is then barred unless a proceeding is started within three years after the beneficiary discovered, or reasonably should have discovered, the subject of the claim.
Concealment matters here too. A trustee who keeps a conflict out of the accounts may push the starting point onto the discovery branch. Whether a beneficiary "reasonably should have discovered" something is a fact-specific question, and courts look at what the beneficiary knew and could have learned. People who have suspected something for a while often want to know whether time has already run; the answer depends on the documents and dates involved. As a plain matter, the period does run, so a suspicion left unexamined for years can affect what remains available.
When a Conflict of Interest Does Not Automatically Mean Removal or Surcharge
Not every conflict ends in removal or a money judgment. California law gives courts discretion, and trustees have room to defend what they did.
Surcharge is not automatic. The good-faith excuse in section 16440(b), described above, allows the court to reduce or eliminate liability for a trustee who acted reasonably on what they knew.
Removal is not automatic either. Section 15642(b) describes grounds a court may act on, but a court weighs the circumstances, and a ground's existence does not require removal.
The section 16004(c) presumption shifts the burden; it does not void the transaction. A trustee who bought a beneficiary's interest can still try to show the deal was fair and properly disclosed.
A trustee who is also a beneficiary is not in breach just by holding both roles. The conflict is structural. Whether it became a breach depends on what the trustee actually did with trust property and information. For trustees who have been accused, this is often the part of the law that matters most.
This site addresses disputes. It does not cover drafting or setting up a trust, or how to run one when no one disagrees. Challenges to whether a trust or amendment is valid at all are a different kind of case, covered under trust contests.
If You'd Like to Talk Through a Trustee Conflict
Conflict-of-interest disputes usually turn on records: the trust instrument, any accounts or written reports, sale and loan documents, invoices paid to related businesses, and the dates a beneficiary asked for information and what came back. Those are the materials an attorney would look at to see which duties and deadlines are in play. For readers whose question is about setting up or running a trust where no one disagrees, this page and this site are not the right starting point.
To discuss a dispute like this with an attorney, request a consultation about your dispute through California Trust Litigation Lawyers.
Remedies that may apply
Related disputes
- Trustee Breach of Fiduciary DutyTrustee Misconduct
- Trustee Removal Attorney in CaliforniaTrustee Misconduct
- Can You Sue a Trustee in California?Trustee Misconduct
- Trustee Self-DealingTrustee Misconduct
- Trustee Stealing From a TrustTrustee Misconduct
- Trustee Misappropriation of Trust AssetsTrustee Misconduct
Frequently asked questions
Is a trustee always a fiduciary?
Yes. Under California law, a trustee is a fiduciary, meaning a person who must act for someone else's benefit rather than their own. Probate Code section 16002 requires the trustee to administer the trust solely in the interest of the beneficiaries. That duty applies whether the trustee is a family member, a professional or a corporate trustee.
What is deemed a conflict of interest for a trustee?
A conflict exists when the trustee has a personal stake that competes with the duty to run the trust solely for the beneficiaries. Probate Code section 16004(a) bars a trustee from using trust property for their own profit or taking part in a transaction in which they have an interest adverse to the beneficiary. Selling trust property to themselves, borrowing trust funds, and hiring their own company with trust money are common examples.
What are a trustee's fiduciary duties under California law?
The principal duties discussed here are the duty of loyalty (section 16002), the duty not to self-deal or hold an adverse interest (section 16004), the duty to keep beneficiaries reasonably informed (section 16060), the duty to report requested information (section 16061), and the duty to account to certain beneficiaries (section 16062). The Probate Code imposes other duties as well; this is not a complete list.
Can a trustee who is also a beneficiary have a conflict of interest?
Yes, the dual role creates a structural conflict. The trustee-beneficiary must still administer the trust for all beneficiaries, and section 16004(a) applies to them fully. Holding both roles is not itself a breach; whether a breach occurred depends on what the trustee actually did.
What can a beneficiary do if a trustee has a conflict of interest?
A beneficiary may petition the court under Probate Code section 17200. If a breach of trust has occurred or is threatened, section 16420(a) allows proceedings to compel performance, stop a breach, compel redress, remove the trustee, reduce compensation and more. None of these remedies is automatic; each depends on the facts and the court's findings.
Can a trust beneficiary be sued by the trustee?
A trustee can go to court too. Probate Code section 17200(a) allows a trustee, as well as a beneficiary, to petition the court concerning the internal affairs of the trust. That question sits at the edge of this page, which focuses on conflicts on the trustee's side.
How long does a beneficiary have to bring a breach of trust claim in California?
Under Probate Code section 16460(a), the period is three years after the beneficiary receives an account or written report that adequately discloses the claim. If no account or report adequately discloses it, or none is received, the period is three years after the beneficiary discovered or reasonably should have discovered the subject of the claim.
Questions About a Trust or Estate Dispute?
Trust and probate disputes are personal, and often painful. Our attorney is here to listen to what's happening in your family and answer your questions in plain language. Call or send us a message.
Reviewed by Russell E. Griffith, Esq.
California Trusts & Estates Attorney
California State Bar No. 120564
Licensed in California Since 1985
California Western School of Law
