Wrongful Disinheritance in California: What the Law Allows and When a Challenge Is Possible

If you were left out of a parent's or spouse's will or trust, California law generally treats that as the person's choice to make. A disinheritance becomes legally challengeable when something defective happened in how the document was made. That includes a lack of mental capacity, undue influence, fraud, duress or forgery. A challenge must also be filed within strict deadlines.

Most people facing this question have just read a will or trust, or a recent amendment, and found their name missing or their share cut to almost nothing. Often the change came late in life, after a decline in health, or after a new caregiver, relative or friend became closely involved. The hurt is real. The question underneath it is a practical one: does California give an excluded heir any way to challenge what happened, or is an unfair result simply final?

This page explains how California separates a disinheritance that feels wrong from one the law will undo. It covers the grounds a court recognizes, the deadlines for will and trust contests, how no-contest clauses work, and the remedies available when property has been wrongfully taken.

What Wrongful Disinheritance Means Under California Law

The starting rule in California is freedom of disposition. A person who makes a will (the testator) or creates a trust (the settlor) may generally leave property to whomever they choose. They may also leave nothing to an adult child or another heir. An heir is a person who would inherit if there were no will. Some family members, particularly spouses, have limited protections that fall outside this page. Outside those situations, being excluded is not unlawful in itself, even when it seems harsh or out of character.

"Wrongful disinheritance" is not a term found in the Probate Code. It is a shorthand for a disinheritance that came about through a legal defect in the document, rather than through the person's own free and informed choice. Courts do not weigh whether a plan was fair. They ask whether the document reflects what a capable person actually intended.

The main grounds that can make a disinheritance contestable include the following:

• Lack of testamentary capacity. The person did not have the mental ability the law requires when the document was signed. For wills, the elements appear in Probate Code section 6100.5.
• Undue influence. The term has the meaning given to it by Probate Code section 86, which adopts a definition from the Welfare and Institutions Code.
• Fraud. The person was deceived into signing, or into signing a document with particular terms.
• Duress or forgery. Duress means the person was coerced into signing. Forgery means the person never signed the document, or the document was altered.

For will contests, Probate Code section 8252 sets out who must prove what. The people offering the will must prove it was properly signed and witnessed. The people contesting it carry "the burden of proof of lack of testamentary intent or capacity, undue influence, fraud, duress, mistake, or revocation."

Similar grounds are raised against trusts, trust amendments and restatements. The procedures and deadlines differ, as later sections explain. A person who has been excluded is usually trying to decide whether any of these grounds fits. That is a question about facts and evidence, not about how unfair the result looks.

Testamentary Capacity: What the Law Requires When a Will or Trust Is Signed

Probate Code section 6100.5 measures capacity for a will "at the time of making the will." Under that section, a person lacks capacity if they cannot do any one of the following:

• understand the nature of the testamentary act, meaning that they are making a will;
• understand and recollect the nature and situation of their property; or
• remember and understand their relations to living descendants, spouse and parents, and to those whose interests the will affects.

A person also lacks capacity if a mental health disorder with symptoms including delusions or hallucinations caused them to leave property in a way they otherwise would not have.

The test focuses on a single point in time. A diagnosis such as dementia does not, by itself, make a will invalid. Someone with a cognitive diagnosis may still have met each element on the day of signing. Someone with no diagnosis may not have. The real question is what the person could understand when they signed.

Trust amendments and restatements raise the same core question: was this person able to understand what they were signing and what it would do? The precise standard a court applies to a trust document can depend on the document and how complicated the transaction was. An attorney who reviews the instrument can say which standard is likely to govern.

The burden of proof matters a great deal here. In a will contest, section 8252 places the burden of proving lack of capacity on the contestant. In practice, the evidence usually includes medical records from around the signing date and testimony from the people who were present. It may also include the drafting attorney's file and evidence of how the person managed their affairs during that period.

Undue Influence: When Someone Else's Will Replaces the Decedent's

Probate Code section 86 provides that "undue influence" has the same meaning as defined in the Welfare and Institutions Code. Section 86 adds that this statutory meaning supplements, and does not replace, the common-law understanding that courts have developed over time.

Proving undue influence is usually the challenger's job. California shifts that burden for certain recipients, however. Under Probate Code section 21380(a), a provision making a donative transfer (a gift) is presumed to be the product of fraud or undue influence when it goes to any of these people:

1. The person who drafted the instrument.
2. A person who transcribed the instrument, or had it transcribed, and was in a fiduciary relationship with the transferor at the time. A fiduciary relationship is a relationship of special trust.
3. A care custodian of a transferor who is a dependent adult. This applies only if the instrument was signed while the care custodian was providing services, or within 90 days before or after that period.
4. A care custodian who began a marriage, cohabitation or domestic partnership with a dependent adult transferor while providing services, or within 90 days after services ended. This applies only if the transfer occurred, or the instrument was signed, less than six months after that relationship began.
5. A relative by blood or marriage, within the third degree, of a person in categories 1 through 3.
6. A cohabitant or employee of a person in categories 1 through 3.
7. A partner, shareholder or employee of a law firm in which a person in category 1 or 2 has an ownership interest.

Under section 21380(b), the presumption "is a presumption affecting the burden of proof." The recipient may rebut it by proving, by clear and convincing evidence, that the gift was not the product of fraud or undue influence. Clear and convincing evidence is a demanding standard of proof.

Section 21380(c) makes one important exception. For a gift to the drafter, or to someone related to or associated with the drafter as described in paragraphs (5), (6) or (7), the presumption is conclusive. It cannot be rebutted. Section 21380(d) adds that a beneficiary who fails to rebut the presumption "shall bear all costs of the proceeding, including reasonable attorney's fees."

These categories are narrow. Not every gift to a caregiver, relative, neighbor or helper is presumed invalid. A gift outside the section 21380(a) categories carries no presumption, so the challenger must prove undue influence directly.

In cases without a presumption, courts tend to look at the whole picture. That may include whether the person had become isolated from family or longtime friends, and whether they depended on the beneficiary for care, transportation or finances. It may also include whether the beneficiary helped arrange the new document, and whether the change departed sharply from a plan the person had kept for years. None of these facts decides a case alone. They are the kinds of facts a court weighs together.

Contesting a Will in California: How the Process Begins

Probate Code section 8250 sets out how a will contest begins before the will is admitted to probate. The contestant files an objection to probate of the will. A summons is then issued and served, with a copy of the objection, on the persons entitled to notice of the petition for administration. The summons directs those persons to file a written pleading in response within 30 days after service. Under section 8250(b), a person named as executor has no duty to defend the contest until that person is appointed personal representative.

A will can also be challenged after the court admits it. Probate Code section 8270(a) allows an interested person to petition to revoke the probate of the will within 120 days after the will is admitted to probate. The petition must set out written grounds of opposition. Two groups cannot use this route: parties to an earlier will contest, and people who had actual notice of a will contest in time to have joined it.

Section 8270(b) creates an exception. A person who was a minor when the will was admitted, or who was incompetent and had no guardian or conservator at that time, may petition to revoke probate at any time before the court enters an order for final distribution.

An "interested person," in plain terms, is someone whose property rights the outcome could affect. Examples include an heir who would inherit if the will fails, or a beneficiary named in an earlier will. A person with no stake in the result generally cannot bring a contest.

Will contests, like other trust and estate disputes, are heard by the Superior Court of California for the county where the case is pending. The California courts' self-help guide offers general background on probate proceedings in those courts.

Contesting a Trust in California: The 120-Day Notice Deadline and How It Works

Trust contests follow a different timetable, and it starts with a notice from the trustee. Probate Code section 16061.7(a) requires the trustee to serve a "notification by the trustee" when certain events occur. Those events include:

• a revocable trust, or part of one, becoming irrevocable because a settlor died; and
• any change of trustee of an irrevocable trust.

The statute lists other events as well, so this list is partial. Depending on the event, the notification goes to beneficiaries and to the deceased settlor's heirs. It must tell recipients that they are entitled, on reasonable request, to a true and complete copy of the trust's terms.

Probate Code section 16061.8 then sets the contest deadline for a person served 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 possible deadlines therefore run, and the later one controls:

• 120 days, which runs from the date the trustee's notification is served on the person.
• 60 days, which runs from the date a copy of the trust's terms is delivered to the person, provided the delivery happens within that 120-day window.

Neither period runs from the date of death or from the date the trust became irrevocable. Each is tied to service of the notification or delivery of the trust terms. That is also why not every trust contest must be filed within 120 days. The timing depends on whether, and when, the notification was served.

Missing the applicable deadline can bar a challenge that might otherwise have succeeded. For that reason, the date the notice arrived, the date any copy of the trust arrived, and the delivery method are often the first facts examined in a dispute. Further background on how to contest a trust appears elsewhere on this site.

No-Contest Clauses: What They Can and Cannot Do

Probate Code section 21311(a) limits enforcement of a no-contest clause to three types of contest. A no-contest clause is a provision that takes away the share of a beneficiary who challenges the document. The three types are:

1. A direct contest brought without probable cause.
2. A pleading challenging a transfer of property on the ground that the property did not belong to the transferor at the time. This applies only if the clause expressly says so.
3. The filing of a creditor's claim, or an action based on one. This also applies only if the clause expressly says so.

A direct contest, broadly, is a court challenge claiming that the will, the trust, or a provision in it is invalid. Lack of capacity, undue influence, fraud and forgery are typical grounds for one.

Section 21311(b) defines probable cause. 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."

The practical result is significant. A no-contest clause does not automatically disinherit everyone who challenges a will or trust. A direct contest brought with probable cause does not trigger the clause, even if the contest ultimately fails. The test looks at what the contestant knew when they filed. Many excluded heirs worry that a challenge could cost them even a small remaining gift, and the probable-cause standard is the rule that answers that worry.

Intentional Interference with Expected Inheritance

Intentional interference with expected inheritance, often shortened to IIEI, is a tort claim. A tort is a civil lawsuit for a wrong, brought outside the will or trust contest itself. California courts have recognized it in limited circumstances. It addresses situations where a third party's wrongful conduct caused someone to lose an inheritance or gift they would otherwise have received.

The claim generally arises when probate and trust remedies are inadequate or unavailable. One example is when the person accused of wrongdoing is not a party to the estate or trust proceeding, so a contest would not reach them.

The elements a plaintiff generally must establish are:

• an expected inheritance;
• intentional interference by the defendant, through conduct that is wrongful independent of the interference itself, such as fraud;
• causation, meaning the interference caused the loss; and
• damages.

The boundaries of this claim in California are still developing. Whether it is available often depends on whether a contest or another probate remedy could have provided relief. It is best understood as a narrow, fact-dependent theory, not a general alternative to a contest.

What Happens When Property Is Wrongfully Taken from an Estate or Trust

Some disinheritance disputes concern property that left the estate or trust, not just the wording of a document. Probate Code section 859 provides a remedy for these situations. If a court finds that a person did any of the following with property belonging to a trust or a decedent's estate, among others, that person is liable for twice the value of the property recovered by an action under that part of the Probate Code:

• in bad faith wrongfully took, concealed or disposed of the property;
• took, concealed or disposed of it by undue influence in bad faith; or
• did so through elder or dependent adult financial abuse, as defined in the Welfare and Institutions Code.

None of this is automatic. Double liability follows only after the court makes one of those findings. Section 859 also states that the person "may, in the court's discretion, be liable for reasonable attorney's fees and costs," except as otherwise required by law. Fees and costs may be awarded against a person liable under that section, but the court decides whether to award them. The section's remedies add to, and do not replace, other available remedies.

Recovery of this kind typically proceeds by petition in the probate court. These cases often involve a house transferred shortly before death, bank accounts that were retitled, or assets moved under a power of attorney. When a trust is involved, related proceedings may be brought under a Probate Code 17200 petition concerning the trust's internal affairs. A broader overview of California trust litigation, including removal and surcharge, is also available on this site.

If You'd Like to Talk Through Your Situation

Disinheritance disputes tend to turn on details that are easy to overlook. These include the exact date a trustee's notice was served, how a trust copy was delivered, who arranged the last amendment, and what records exist from the week it was signed. A consultation is where an attorney can look at those documents and dates. That includes the will or trust and any amendments, the trustee's notification, medical and care records, and any transfers of property. The attorney can then say which grounds, deadlines and remedies may apply. This page is written for people already facing a dispute over an existing will or trust. Readers interested in planning their own estate will find it is not about that subject.

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