No-Contest Clause: Definition and How It Works in California

By Eric Ridley, attorney, Ridley Law. Updated September 2026.

A no-contest clause disinherits a beneficiary who challenges a will or trust in court. California limits its enforcement to a narrow set of challenges under Prob. Code, § 21310 and following.

How it works in California

California doesn’t enforce no-contest clauses against every kind of challenge a beneficiary might bring. Under Prob. Code, § 21311, the clause can be enforced only against a direct contest brought without probable cause, along with a short list of other specific actions the statute names. A beneficiary who has a real, reasonable basis for challenging a document can usually raise that challenge without triggering the clause.

Because the statute is narrow, a no-contest clause works better as a deterrent than as an automatic penalty. A beneficiary weighing whether to challenge a will or trust has to consider whether their argument clears the probable cause bar, since guessing wrong can cost them their entire share.

Why it matters

A no-contest clause can discourage a disappointed beneficiary from filing a weak challenge, but it doesn’t stop every dispute. Say a trust leaves most of the estate to one child and very little to another, and the trust includes a no-contest clause. The less-favored child can still raise a genuine claim, such as that the trust was the product of undue influence, without automatically losing their share, as long as they have probable cause for the claim.

Common mistakes

Assuming a no-contest clause blocks any objection a beneficiary might raise. It only reaches the specific actions the statute lists, and only when there’s no probable cause behind them. Relying on the clause instead of addressing the reason a beneficiary might contest the document in the first place, such as an unequal distribution nobody explained while the parent was alive.

Related terms

• Holographic will: a handwritten will that can carry a no-contest clause just like a formally drafted one.
• Trust contest: the kind of challenge a no-contest clause is written to discourage.
• Undue influence: a common basis for a trust contest, and one a beneficiary can usually raise despite a no-contest clause if they have probable cause.
• Will Contest: a court challenge to the validity of a will.

Part of the California estate planning glossary. For the full treatment, see No-Contest Clauses in California Trusts.