Suing a Trustee in California: What the Law Allows and How It Works

Yes, a beneficiary or co-trustee in California can take a trustee to court. The case is usually a petition filed in the Superior Court asking a judge to order the trustee to account, to stop or undo a breach, to repay losses, or to step aside. A three-year deadline generally applies to breach of trust claims.

Most people facing this question are not starting from a theory. They are starting from a feeling that something is wrong: a sibling who became trustee after a parent died and has gone quiet, a house that was sold or moved into without explanation, a bank account that seems smaller than it should be, or repeated requests for paperwork that go unanswered. The reader is usually trying to work out whether what they are seeing is a legal wrong or just a slow, frustrating administration, and what a court could actually do about it.

This page walks through what "suing a trustee" means under the California Probate Code, which duties a trustee owes, what counts as a breach, what a judge may order, and the deadlines that decide whether a claim can still be brought. It describes what the law lets each side do. It does not assume that any trustee has done wrong.

What It Means to Sue a Trustee Under California Law

A trustee is a fiduciary, meaning a person the law requires to act for someone else's benefit rather than their own, with care, loyalty and honesty. When a trustee falls short of those duties, the wrong is called a breach of trust, and California gives beneficiaries and co-trustees a defined set of court tools to respond.

The starting point is Probate Code section 17200(a). Except as section 15800 provides, "a trustee or beneficiary of a trust may petition the court under this chapter concerning the internal affairs of the trust or to determine the existence of the trust." In plain terms, "internal affairs" covers how the trust is being run: what the document means, what the trustee is doing, and who gets what. A petition is the written request that opens the case, and the person filing it is the petitioner.

The second anchor is Probate Code section 16420(a). If a trustee commits a breach of trust, or threatens to commit one, a beneficiary or co-trustee may start a proceeding for purposes that include forcing the trustee to perform, stopping a breach, recovering money, and removing the trustee. The full list appears in the remedies section below. Section 16420(b) adds that those remedies "do not prevent resort to any other appropriate remedy provided by statute or the common law," so the list is a floor, not a ceiling.

People often ask whether they are suing "the trust" or "the trustee." The statutes here are written around the trustee. Section 16420 speaks of proceedings when "a trustee commits a breach of trust," and the remedies run against the trustee's conduct, the trustee's compensation, and property the trustee controls or disposed of. A breach of trust case is generally brought against the trustee in the trustee's fiduciary role, the capacity in which that person holds and manages the trust property.

Trust and estate cases in a county are heard by the Superior Court of California for that county. Which county is proper in a given dispute is a venue question that turns on the facts. The broader landscape of these cases is laid out in the overview of California trust litigation.

Grounds for Suing a Trustee: What Qualifies as a Breach

California's Probate Code sets out specific duties, and a petitioner's case generally rests on showing that one of them was not met. Three categories come up most often: self-dealing, failure to inform, and failure to account.

Self-dealing. Probate Code section 16004(a) states the duty of loyalty directly:

"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."

Self-dealing is the shorthand for breaking this duty: a trustee buying trust real estate for themselves, living in a trust house without arrangement, lending trust money to their own business, or steering a deal toward a company they own. Section 16004(c) goes further. A transaction between the trustee and a beneficiary, made while the trust exists or while the trustee's influence over the beneficiary remains, by which the trustee obtains an advantage from the beneficiary, is presumed to violate the trustee's fiduciary duties. That presumption affects the burden of proof, which means the trustee, not the beneficiary, generally has to show the transaction was fair. It does not apply to an agreement between trustee and beneficiary about hiring or paying the trustee.

Failure to inform. Under Probate Code section 16060, the trustee "has a duty to keep the beneficiaries of the trust reasonably informed of the trust and its administration." Section 16061 adds a duty to respond: except as section 16069 provides, on reasonable request by a beneficiary, the trustee must provide requested information about the administration of the trust that is relevant to that beneficiary's interest.

Failure to account. An account is a formal written report of what the trust held, what came in, what went out, and what remains. Under Probate Code section 16062(a), except as that section and section 16064 provide, 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 person whose share comes only at some later point may fall outside that duty. Section 16062 also carves out certain older trusts, including living trusts created by instruments executed before July 1, 1987.

Section 16064 lists situations where the account is not required, including where the trust instrument waives it and where a beneficiary has waived it in writing. Even then, the court may compel the trustee to account "upon a showing that it is reasonably likely that a material breach of the trust has occurred." A waiver, in other words, does not close the door when there is real reason to think something went wrong.

What a Court Can Order: Remedies Available Under California Law

When a breach is proved or threatened, a beneficiary or co-trustee may ask for any of the purposes in Probate Code section 16420(a) that is appropriate:

• to compel the trustee to perform the trustee's duties;
• to enjoin, meaning to order a stop to, a breach of trust;
• 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 (a court-declared claim on specific property, holding it for its rightful owner);
• subject to section 18100, to trace trust property that was wrongfully disposed of and recover the property or its proceeds.

Probate Code section 17206 gives the court wide room on any petition: it "in its discretion may make any orders and take any other action necessary or proper to dispose of the matters presented by the petition, including appointment of a temporary trustee to administer the trust in whole or in part." A judge is not limited to choosing between doing nothing and removing the trustee.

Surcharge. A surcharge is a court order that the trustee pay money to make the trust whole. Under Probate Code section 16440(a), a trustee who commits a breach is chargeable with whichever of these 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 estate if the loss of profit resulted from the breach. Surcharge is not automatic. Section 16440(b) allows the court, in its discretion, to excuse a trustee in whole or in part if the trustee acted reasonably and in good faith under the circumstances as known to the trustee and excusing them would be equitable.

Double recovery for bad-faith takings. Probate Code section 859 applies only if the court finds that a person in bad faith wrongfully took, concealed, or disposed of property belonging to a trust or a decedent's estate (among others), or took, concealed, or disposed of it by undue influence in bad faith, or through elder or dependent adult financial abuse as defined by statute. On that finding, the person is liable for twice the value of the property recovered by an action under that part of the Probate Code. The person may also, in the court's discretion and except as otherwise required by law, be liable for reasonable attorney's fees and costs. Neither the doubling nor the fees follows from a dispute alone; both depend on the court's finding. Section 859 ties the doubled recovery to an action brought under that part of the Probate Code.

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 (the person who created the trust), co-trustee or beneficiary under section 17200. The grounds in section 15642(b) include a breach of the trust; the trustee being insolvent or otherwise unfit to administer the trust; hostility or lack of cooperation among co-trustees that impairs administration; the trustee failing or declining to act; and compensation that is excessive under the circumstances. The statute names other grounds as well, so this list is partial.

Suing a Trustee Personally: What That Actually Means

The word "chargeable" in section 16440(a) is where personal liability lives. When a court surcharges a trustee for a breach, the trustee is the one charged with the loss, the profit made through the breach, or the profit the trust should have earned. That obligation falls on the trustee, not on the beneficiaries' shares.

For many beneficiaries, this is the heart of the question, because the person they are worried about is often a relative who also stands to inherit. The law does not make a trustee personally liable simply for being trustee, and it does not shield a trustee who breached their duties either. What it does is set conditions. A breach must be shown, the remedy must be appropriate to the circumstances, and the court keeps the discretion described above to excuse a trustee who acted reasonably and in good faith.

Section 859, discussed in the remedies section, sits on top of that baseline. It reaches further only where the court makes one of the bad-faith or abuse findings that section requires.

Some readers are also thinking about theft or elder financial abuse as crimes. Criminal exposure is a separate matter handled in criminal court. This page covers civil proceedings in the Superior Court under the Probate Code only.

How to Start: Petitioning the Court and Compelling Information

A case against a trustee typically begins with a petition under section 17200(a), filed in the Superior Court of California for the proper county. The proceedings that section 17200(b) lists, such as construing the trust, settling accounts, instructing the trustee, and compelling the trustee to act, "include, but are not limited to" those purposes. The list is not exhaustive. A more detailed treatment of this tool is in the guide to the Probate Code 17200 petition.

Section 17200(b)(7) lets a beneficiary ask the court to compel the trustee to do any of three things: provide a copy of the terms of the trust; provide information under section 16061, if the trustee has failed to provide the requested information within 60 days after the beneficiary's reasonable written request and the beneficiary has not received it within the six months preceding the request; or account to the beneficiary, 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 preceding the request.

Where the concern is not missing paperwork but conduct, section 16420(a) allows a proceeding as soon as a trustee commits or threatens to commit a breach. A beneficiary does not have to wait for property to be gone before asking the court to step in. The general workings of the state court system are described on the California Courts website.

In the first weeks of working with an attorney on a dispute like this, the focus is usually on the documents: the trust instrument and any amendments, any notice the trustee has sent, every written request and reply, any accounts or statements, and records showing what happened to specific property.

Deadlines: The Statute of Limitations for Breach of Trust Claims

Probate Code section 16460(a) sets a three-year limit with two branches, and which branch applies depends on what the beneficiary received.

The account or report branch. If a beneficiary received an interim or final written account, or another written report, that adequately discloses the existence of a claim against the trustee, the claim is barred as to that beneficiary unless a proceeding is commenced within three years after receipt. A report adequately discloses a claim if it gives enough information that the beneficiary knows of the claim or reasonably should have inquired into it.

The discovery branch. If no written account or report adequately discloses the claim, or the beneficiary received none at all, the claim is barred unless a proceeding is commenced within three years after the beneficiary discovered, or reasonably should have discovered, the subject of the claim.

Both branches apply only where the claim has not already been barred by adjudication, consent, limitation or otherwise. The phrase "reasonably should have" matters in each. A document a beneficiary set aside unread can still start the clock if it disclosed enough.

A separate deadline for trust contests. Challenging a trustee's conduct is different from challenging the trust itself, for example claiming an amendment was the product of undue influence or lack of capacity. Under Probate Code section 16061.7(a), a trustee must serve a formal notification in events that include when a revocable trust becomes irrevocable because of a settlor's death and whenever the trustee of an irrevocable trust changes; the section lists other events too. A person served with that notification under section 16061.7(a)(1) cannot bring an action to contest the trust more than 120 days from the date the notification is served, or 60 days from the date a copy of the terms of the trust is delivered to the person during that 120-day period, whichever is later (Probate Code section 16061.8). That period runs from service of the notice or delivery of the trust terms, not from the death. How those challenges work is covered in the guide on how to contest a trust.

Trustee Compensation and Fee Disputes

Probate Code section 15681 sets the default: "If the trust instrument does not specify the trustee's compensation, the trustee is entitled to reasonable compensation under the circumstances." Where the trust names a fee, that term generally governs; where it is silent, the question becomes what is reasonable given the work actually done.

A fee increase comes with a notice rule. Under section 15686(b), a trustee may not charge an increased trustee's fee for a particular trust without first giving at least 60 days' written notice to each beneficiary entitled to an account under section 16062, each beneficiary given the last preceding account, and each beneficiary who has asked in writing for notice of an increased fee and given an address. "Trustee's fee" includes the periodic base fee, percentage rate, minimum fee, hourly rate and transaction charges, but not fees for extraordinary services. Under section 15686(c), if a beneficiary files a section 17200 petition to review the increase or to remove the trustee and serves it on the trustee before the 60 days run out, the increase does not take effect until the court orders otherwise or the petition is dismissed.

Fee disputes connect back to the remedies already covered. Excessive compensation under the circumstances is among the grounds for removal in section 15642(b), and reducing or denying compensation is among the purposes listed in section 16420(a). Whether a particular fee is excessive is a fact question for the court.

When a Trustee Refuses to Account or Share Information

Silence is one of the most common reasons beneficiaries look into court action, and it can be hard to know whether a trustee is simply overwhelmed or is avoiding scrutiny. The statutes treat both possibilities the same way at the start: they give the beneficiary a written process and a defined point at which the court can be asked to step in.

The duties themselves were described earlier: the duty to keep beneficiaries reasonably informed under section 16060, the duty to answer reasonable requests under section 16061, and the accounting duty under section 16062, with the waiver override in section 16064. What turns those duties into a court remedy is the written request.

Under section 17200(b)(7), a reasonable written request for information starts a 60-day period. If the trustee does not provide the information within 60 days and the beneficiary has not received it within the six months before the request, a petition to compel becomes available. A written request for an account works the same way: if 60 days pass without an account and none was made in the six months before the request, a petition to compel an account becomes available. These are statutory conditions, and the dates on each letter or email often matter later.

Where refusal is part of a larger pattern, section 16420(a) also allows a proceeding to compel the trustee to perform the trustee's duties and to enjoin a breach. If the trust or a beneficiary's own writing waived accounts, section 16064 still permits the court to compel one on a showing that a material breach is reasonably likely.

If You'd Like to Talk Through a Dispute With a Trustee

Disputes with a trustee tend to turn on details that are easy to overlook from the outside: the exact date a written request was sent, whether an account actually disclosed a problem, whether the trustee served a notification, and what the trust instrument says about fees and accounting. A conversation with an attorney about a dispute like this would typically cover the trust and any amendments, the correspondence with the trustee, any accounts or statements received, and the transactions or property at issue. Readers looking for help creating or updating their own trust are not the audience for this page, and a different first call may be more useful for them.

To discuss what is happening with a trustee, you can request a consultation about your dispute through California Trust Litigation Lawyers.