
You can disinherit an adult child in California. You largely cannot disinherit a spouse. That split surprises people, and it comes down to community property. California gives children no automatic right to inherit, so a parent may leave a child nothing as long as the intent is stated clearly. A spouse is different: half the community property already belongs to them by law, and no will or trust can take it away. Everything else about disinheriting someone in California turns on how precisely the document is written, because vague language is what gives a disinherited person an opening to sue.
Yes. California has no forced heirship for children, and no law requires you to leave an adult child anything. You do not need to explain why, and you are not obligated to justify the decision to anyone.
What the law does require is clarity. A will or trust that simply leaves a child out, without naming them, invites the argument that the omission was an accident. That argument has a statutory basis, which is why the safest approach names the person directly and states the intent plainly, for example that you are intentionally making no provision for a specific child.
A few practical notes:
Mostly no, and this is where California differs sharply from common law states.
California is a community property state. Property earned or acquired during the marriage generally belongs to both spouses equally, and your surviving spouse already owns their half. Your will or trust controls only your separate property and your half of the community property. You cannot give away what is already theirs.
There is a way to go further, but it requires the spouse’s agreement. Under Probate Code sections 140 through 147, a spouse may waive inheritance rights in a written agreement, typically a prenuptial or postnuptial agreement, with full disclosure of assets. Without that waiver, attempting to cut a spouse out usually fails as to the community property half.
Interestingly, California does not have the “elective share” that many other states use to guarantee a surviving spouse a fixed percentage. Community property serves that protective function instead. For couples with children from prior relationships, this interacts in ways worth planning around, as our post on estate planning for blended families explains.
California law protects people it presumes you forgot rather than excluded. These are “omitted” or “pretermitted” heirs, and their claims can override your documents.
Omitted spouse. Under Probate Code section 21610, if you marry after signing all of your estate planning documents and those documents make no provision for your new spouse, the omitted spouse receives:
Omitted child. Under Probate Code section 21620, a child born or adopted after you signed all of your testamentary instruments, and left nothing, receives the share they would have received if you had died without a will.
The logic is that a document created before someone existed probably reflects an oversight. The consequence is a court redistributing your estate against your written wishes.
Both omitted heir statutes have exceptions, found in Probate Code sections 21611 and 21621. A claim generally fails when:
Courts read these documents strictly. A generic catch-all clause disinheriting “all heirs not named herein” is weaker than most people assume, particularly against someone who did not exist when the document was signed. Naming the person, or a clearly defined class such as any children born or adopted after the date of the instrument, is far more durable. This precision is a key reason disinheritance belongs in a professionally drafted will or trust rather than a template.
Yes. Disinheriting someone does not prevent them from filing a challenge; it only removes their automatic statutory claim. Common grounds include lack of capacity, undue influence, fraud, duress, and improper execution.
A no-contest clause can discourage this. But California limits enforcement: under Probate Code section 21311, such a clause generally applies only to a direct contest brought without probable cause. Someone with a reasonable, evidence-based basis to challenge the document typically will not lose their inheritance for trying, which also means a no-contest clause alone is not a complete shield.
Practical steps that strengthen a plan against challenge:
Do I have to leave my children something in California?
No. California does not require any inheritance for adult children. A clear statement of intent in the document is what makes the decision stick.
Should I leave a disinherited child one dollar?
It is unnecessary under current California law and can complicate administration by giving that person beneficiary rights, including notice and accountings.
Can I disinherit a stepchild?
Generally, yes. Stepchildren do not inherit automatically in California unless legally adopted or they meet a narrow legal-relationship test.
What happens if I marry after signing my trust?
Your new spouse may qualify as an omitted spouse under section 21610 and claim a statutory share. Updating the plan after marriage prevents this.
Does a no-contest clause stop a lawsuit?
Not entirely. Under section 21311 it applies mainly to direct contests filed without probable cause, so a challenger with a genuine basis can still proceed.
Disinheriting someone in California is legally permitted for children and sharply limited for spouses, and in both cases the outcome depends on the words in your documents. Silence gets read as an oversight. Generic clauses get read narrowly. Naming the person and stating your intent, then updating the plan after every marriage, birth, or adoption, is what keeps the decision yours rather than a judge’s.
If you are considering leaving someone out of your plan, or you have documents that predate a marriage or a new child, book a planning session with our team. We will make sure your intentions are recorded in language that holds up. You deserve it.