Getting this right is not academic, because real duties attach the moment any portion becomes irrevocable. Prob. Code § 16061.7 requires the trustee to serve a notification on heirs and beneficiaries not later than 60 days after the triggering event, and that notification must carry the warning that no contest may be brought more than 120 days from service, or 60 days from delivery of a copy of the terms of the trust within that 120-day period, whichever is later. Miss the service deadline and you leave the contest window open indefinitely. Prob. Code § 15800 governs the other side: as to whatever portion remains revocable, the surviving spouse holds the beneficiary rights and the children have no standing to demand information about it. The mistakes run in both directions. Some surviving spouses assume they can change everything, and try to redirect the deceased spouse's share years later. Others assume they can change nothing, so they leave the subtrusts unfunded and untitled and file no separate returns, which quietly undoes the tax structure the couple paid for.
Fixing or Changing a Trust · California
Does a joint revocable trust become irrevocable when the first spouse dies?
It depends entirely on what your document says, and there is no universal California rule to fall back on. Some joint trusts become wholly irrevocable at the first death. Some stay fully amendable by the surviving spouse. Most of the ones drafted in the Bay Area do something in between: at the first death the trust divides into subtrusts, and different rules attach to each. In a classic A/B or disclaimer structure, the survivor's trust holds the surviving spouse's share and typically remains revocable and amendable by that spouse, while the decedent's, bypass or credit shelter trust holds the deceased spouse's share and typically becomes irrevocable so that its terms and its tax treatment are locked. A trust that simply leaves everything to the survivor outright often remains fully revocable. To find out whether yours is irrevocable now, open the document to the article describing what happens on the first death and read it subtrust by subtrust, because that article is where the answer lives.
This page is general information about California law, not legal advice, and does not create an attorney-client relationship. Figures and deadlines change, and every family’s situation is different. Last reviewed August 2026.
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Yes. While you are alive and competent you can amend, restate, or revoke a California living trust without anyone's permission. When that power ends.
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Follow your trust's own amendment clause exactly. How to amend or restate a California revocable trust, and the mechanical mistakes that void amendments.
Read the answerCan an irrevocable trust be changed in California?
Yes, in defined circumstances. The three California routes to change an irrevocable trust, who has to sign each one, and when a judge has to approve it.
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