How to Contest a Trust in California

Yes, a trust can be contested in California. A trustee or beneficiary files a petition in Superior Court claiming the trust or a provision is invalid, for example for lack of capacity, undue influence, fraud or duress. After the trustee serves the notification, the deadline is 120 days from service, or 60 days from delivery of a copy of the trust terms during that 120-day period, whichever is later (Probate Code section 16061.8).

Most people facing this question have just learned something that does not sit right. A parent's trust was changed late in life, a new person appears as the main beneficiary, or a sibling who helped with care now stands to receive the house. Some have a trustee's notice on the kitchen table and are unsure what it starts. They are trying to work out whether what happened can be challenged at all, on what basis, and how much time remains to decide.

This page walks through what a trust contest is under California law, the grounds courts recognize, the deadline, how no-contest clauses work, how the case moves through court, and how a trust contest differs from a will contest.

What It Means to Contest a Trust in California

A trust contest is a court proceeding that challenges whether a trust, or one of its provisions, is valid. It asks the court to decide that a document should not be given effect, in whole or in part. It is not a complaint about how a trustee is running the trust.

That distinction matters, because California law treats the two disputes differently. A validity contest attacks the instrument itself. A trustee-misconduct proceeding accepts that the trust is valid and asks the court to address what the trustee has done, such as failing to account, self-dealing or refusing to distribute. Both are available, and some disputes involve both, but they are different actions with different rules. This page focuses on validity contests; trustee removal and breach of trust are separate topics.

Trust and estate cases in a California county are heard by the Superior Court of California for that county. The general authority for these cases is Probate Code section 17200(a), which says that, 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." Among the internal-affairs proceedings the statute lists is "determining the validity of a trust provision."

Under Probate Code section 17200(a), a trustee or beneficiary of a trust may petition the court about the trust, except as section 15800 provides. That might be a named beneficiary whose share shrank, a family member left out entirely, or someone who was a beneficiary under an earlier version of the trust and lost that position in a later amendment. Who may file a particular claim depends on the nature of the claim and the person's relationship to the trust.

Grounds for Contesting a Trust Under California Law

California recognizes several grounds for challenging a trust. The Probate Code's definition of a "direct contest" in section 21310(b) is a useful map, because it lists the grounds on which an instrument's validity is attacked: forgery; lack of due execution; lack of capacity; menace, duress, fraud or undue influence; revocation, including revocation of a trust under section 15401; and disqualification of a beneficiary under section 6112, 21350 or 21380.

Lack of capacity. The question is whether the settlor, the person who created the trust, had the legal capacity to make or change it at the time the trust was signed or amended. Capacity is measured at that moment. A diagnosis, by itself, does not answer the question; the evidence usually centers on what the settlor understood when the document was signed.

Undue influence. Probate Code section 86 gives undue influence its meaning by reference to the Welfare and Institutions Code, and says that meaning supplements the common law. It is one of the most frequently raised grounds in late-life amendment disputes.

Fraud and duress. Both are recognized grounds for setting aside an instrument or a provision.

Improper revocation or amendment. A trust that was revoked or changed without following the method the law or the trust itself requires may be challenged. Probate Code section 15401 also provides that a trust may not be modified or revoked by an attorney in fact under a power of attorney unless the trust instrument expressly permits it.

The section 21380 presumption. Probate Code section 21380 creates a presumption, meaning a legal starting point the court assumes unless it is disproved, that certain gifts are the product of fraud or undue influence. It applies to a provision making a donative transfer to people the section lists, including:

• the person who drafted the instrument;
• a person who transcribed the instrument, or caused it to be transcribed, and was in a fiduciary relationship with the transferor at the time;
• a care custodian of a transferor who is a dependent adult, but only if the instrument was executed while the care custodian provided services, or within 90 days before or after that period;
• certain relatives, cohabitants, employees and law-firm associates of those people, and a care custodian who began a marriage, cohabitation or domestic partnership with the dependent adult under the timing the section describes.

The presumption affects the burden of proof and may be rebutted by proving, by clear and convincing evidence, that the transfer was not the product of fraud or undue influence. For a transfer to the drafter, and to the people section 21380(c) associates with the drafter, the presumption is conclusive. A beneficiary who fails to rebut it bears all costs of the proceeding, including reasonable attorney's fees.

The presumption is narrow. It does not mean every gift to a caregiver, relative or helper is presumed invalid. It reaches only the categories the statute describes, under the conditions it sets.

The Deadline to Contest a Trust: California's 120-Day Rule

Probate Code section 16061.8 sets the deadline for a person served with the trustee's notification under section 16061.7(a)(1). That person "shall not bring an action to contest the trust more than 120 days from the date the notification by the trustee is served upon the person, or 60 days from the date on which a copy of the terms of the trust is delivered pursuant to Section 1215 to the person during that 120-day period, whichever is later."

Two events drive the calculation:

• Service of the trustee's notification starts the 120-day period.
• Delivery of a copy of the trust terms during that 120-day period starts a separate 60-day period.

Whichever ends later controls. If the trust terms arrive near the end of the 120 days, the 60-day period can extend the deadline past day 120.

The notification itself comes from Probate Code section 16061.7, which requires the trustee to serve it in the events that section lists, including when a revocable trust becomes irrevocable because of a settlor's death and whenever the trustee of an irrevocable trust changes. The notice goes to each beneficiary of the irrevocable trust, subject to section 15804, and, where the triggering event is a settlor's death, to each heir of the deceased settlor.

The clock in section 16061.8 does not run from the date of death or from the date the trust became irrevocable. Not every trust situation starts it, and not every trust contest is governed by a 120-day limit; the section applies to the person served under section 16061.7(a)(1).

The practical consequence is significant. Once a person has been served and the applicable period passes without a contest, section 16061.8 bars that person from bringing an action to contest the trust. For a family member who received a notice weeks ago and set it aside while grieving, that date is often the first fact worth pinning down.

No-Contest Clauses and Probable Cause

A no-contest clause is a provision in a trust or will that tries to reduce or eliminate a beneficiary's share if that beneficiary challenges the instrument. Section 21310 describes it as a provision that, if enforced, "would penalize a beneficiary for filing a pleading in any court."

California limits when these clauses bite. Under Probate Code section 21311(a), a no-contest clause "shall only be enforced" against:

1. a direct contest brought without probable cause;
2. a pleading challenging a transfer of property on the ground that it was not the transferor's property at the time of the transfer, but only if the clause expressly provides for that application; and
3. the filing of a creditor's claim or prosecution of an action based on it, again only if the clause expressly provides for that application.

Probable cause is defined in section 21311(b): it "exists if, at the time of filing a contest, the facts known to the contestant would cause a reasonable person to believe that there is a reasonable likelihood that the requested relief will be granted after an opportunity for further investigation or discovery."

So a no-contest clause does not automatically disinherit anyone who challenges a trust. A direct contest filed with probable cause is outside what the clause may be enforced against. The test looks at what the contestant knew when filing, not at whether the contest ultimately wins.

For a beneficiary who already receives something under the trust, this is often the hardest part of the decision. The weighing usually comes down to what facts are known now, what records or witnesses exist, and how a reasonable person would view those facts.

How a Trust Contest Proceeds in California

A trust contest begins with a petition filed in the Superior Court of California for the county where the trust is administered, under the authority section 17200(a) provides. The proceedings section 17200(b) lists "include, but are not limited to" the purposes it names, so the list is not exhaustive.

The general sequence looks like this:

• Petition. The contestant files a petition setting out the grounds and the relief requested, such as invalidating an amendment or a specific gift.
• Notice. The petition is served on the trustee and other interested parties so they can participate.
• Response. The trustee, and often the beneficiaries who benefit from the challenged document, file written responses or objections.
• Discovery. The parties may exchange documents and take testimony, which is often where medical records, drafting files and witness accounts come in.
• Hearing or trial. The court hears the evidence and rules on the petition.

The court has broad authority once a petition is before it. Under Probate Code section 17206, the court "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." That can matter where the trustee is also the person whose gift is being challenged.

Not every contest ends with a ruling. Parties often resolve trust contests by settlement before a final hearing, and the court's general information about civil and probate proceedings is available through the California Courts website. In the early weeks of working with an attorney on a contest, the work typically centers on gathering the trust versions, confirming the notification date, and identifying what evidence exists about the settlor at the time of signing.

Trust Contests Compared to Will Contests

A common question is whether it is harder to contest a trust or a will. Both challenge an instrument's validity on similar grounds, but they follow different procedural paths.

Will contests before probate. Under Probate Code section 8250, a will contest begins with an objection to probate filed with the court. A summons is then issued and served, with a copy of the objection, and the persons summoned file a written pleading in response within 30 days after service. A person named as executor has no duty to defend the contest until appointed personal representative.

Will contests after admission. Under Probate Code section 8270, within 120 days after a will is admitted to probate, an interested person, other than a party to a will contest and other than a person who had actual notice of a will contest in time to have joined in it, may petition to revoke the probate of the will. Section 8270(b) makes an exception: a person who was a minor, or who was incompetent and had no guardian or conservator, when the will was admitted may petition at any time before entry of an order for final distribution.

Capacity for a will. Probate Code section 6100.5 tests capacity at the time of making the will. A person lacks capacity if, at that time, the person could not understand the nature of the testamentary act, understand and recollect the nature and situation of the person's property, or remember and understand the person's relations to living descendants, spouse and parents and those whose interests the will affects; or if a mental health disorder with delusions or hallucinations caused the person to devise property in a way the person otherwise would not have. A diagnosis alone does not make a will invalid.

Trust contests proceed by petition under section 17200 in the Superior Court; will contests move through the probate process under sections 8250 and 8270. Neither is categorically harder. The difficulty depends on the facts, the available evidence, and which instrument actually controls the property in dispute, which is sometimes both when a will pours assets into a trust.

If You'd Like to Talk Through a Possible Trust Contest

A trust contest turns on details that rarely show up in the documents alone: the exact date the trustee's notification was served, when the trust terms arrived, who was involved in a late amendment, and what the settlor understood at the time of signing. A consultation is the place to walk through those facts, including whether section 21380 might apply, how a no-contest clause in the trust reads, and which deadline governs. For readers whose concern is how a trustee is managing a valid trust, rather than whether the trust itself is valid, a conversation about breach of trust or trustee removal may fit better.

To discuss a possible trust contest with an attorney, you can request a consultation about your dispute through California Trust Litigation Lawyers.