TL;DR — Key Takeaways
- The question of how to amend a living trust california settled in February 2024, and it settled against the rule most guidance still states. In Haggerty v. Thornton, the California Supreme Court held that a trust may be modified through the section 15401 revocation procedures “unless the trust instrument provides a method of modification and explicitly makes it exclusive,” or otherwise bars using revocation procedures to modify.
- That decision disapproved five earlier Court of Appeal cases, including King v. Lynch, which for twelve years was read to mean that if your trust states an amendment method, you must use it. Content written before February 8, 2024 was stating the law correctly and is now wrong.
- It applies backwards. The Court rejected prospective-only application, quoting the rule that “judicial construction of a statute is an authoritative statement of what the statute meant before as well as after” the decision. An amendment signed in 2019 is judged by Haggerty.
- The statutory method is narrow and specific. Probate Code section 15401(a)(2) allows revocation “[b]y a writing, other than a will, signed by the settlor” and delivered to the trustee during the settlor’s lifetime. Section 15402 then lets the settlor “modify the trust by the procedure for revocation.”
- An attorney in fact cannot do this for you. Section 15401(c): “A trust may not be modified or revoked by an attorney in fact under a power of attorney unless it is expressly permitted by the trust instrument.”
The Direct Answer
A California revocable trust may be amended by any method the trust states, or by the statutory method in Probate Code section 15401(a)(2), a signed writing other than a will delivered to the trustee. Under Haggerty v. Thornton (2024), the trust’s own method is exclusive only if the instrument explicitly says so.
How to Amend a Living Trust California: Two Sections and One 2024 Decision
The whole subject sits on two short Probate Code sections and a Supreme Court decision that reconciled them.
Section 15400 sets the default, and it surprises people: “Unless a trust is expressly made irrevocable by the trust instrument, the trust is revocable by the settlor.” Silence makes a trust revocable, not the reverse. The section applies where the settlor was domiciled in California when the trust was created, or the instrument was executed here, or the instrument chooses California law.
Section 15401 supplies the two revocation routes. A revocable trust may be revoked “(1) By compliance with any method of revocation provided in the trust instrument,” or by a writing other than a will, signed by the settlor or another holder of the power of revocation, and delivered to the trustee during that person’s lifetime. Then the sentence that carries the whole dispute: if the instrument “explicitly makes the method of revocation … the exclusive method,” the trust cannot be revoked under that paragraph.
Section 15402 is one sentence and it borrows all of that for amendments: “Unless the trust instrument provides otherwise, if a trust is revocable by the settlor, the settlor may modify the trust by the procedure for revocation.”
For twelve years the courts split on what “[u]nless the trust instrument provides otherwise” meant. One reading, from King v. Lynch (2012) 204 Cal.App.4th 1186, was that if any modification method is specified in the trust, that method must be used. The other reading was that the instrument must do more than specify a method – it must make that method exclusive.
In Haggerty v. Thornton, decided February 8, 2024, the California Supreme Court adopted the second reading. Justice Liu, writing for a unanimous court, held: under section 15402 a trust may be modified through the section 15401 revocation procedures unless the instrument supplies a modification method and “explicitly makes it exclusive.”
The facts are worth knowing because they are ordinary. Jeane Bertsch created a trust in 2015 reserving “[t]he right by an acknowledged instrument in writing to revoke or amend this Agreement or any trust hereunder.” She later signed an amendment that was not notarized. A beneficiary excluded by that amendment argued it failed, because an unnotarized document is not an “acknowledged instrument” and so did not follow the method the trust specified. The probate court held the amendment valid, the Court of Appeal affirmed, and the Supreme Court affirmed: the trust’s language named a method but did not explicitly make it exclusive, so the statutory method remained available.
Two consequences follow, and both matter more than the holding itself.
First, the Court disapproved five decisions – King v. Lynch, Balistreri v. Balistreri (2022) 75 Cal.App.5th 511, Diaz v. Zuniga (2023) 91 Cal.App.5th 916, Pena v. Dey (2019) 39 Cal.App.5th 546 and Conservatorship of Irvine (1995) 40 Cal.App.4th 1334 – “to the extent that they are inconsistent with this holding.” It also disapproved, in part, the very Court of Appeal opinion it was affirming.
Second, it applies to amendments already signed. Haggerty argued the decision should be prospective only because King “was the prevailing law when Ms. Bertsch devised her trust.” The Court declined, quoting the principle that “judicial construction of a statute is an authoritative statement of what the statute meant before as well as after the decision of the case giving rise to that construction,” subject only to narrow fairness exceptions that were not argued.
What Is the Difference Between a Trust Amendment and a Restatement?

Scope, not legal effect. Both are exercises of the same power under section 15402.
An amendment changes specified provisions and leaves the rest of the trust standing. It reads as a patch: this article is deleted, this schedule is replaced, this successor trustee is substituted.
A restatement – sometimes called an amendment and complete restatement – replaces the entire text of the trust while keeping the original trust in existence. Same trust, same date of creation, same name, new terms throughout.
The trust amendment vs restatement choice matters for a practical reason that has nothing to do with validity:
| Amendment | Restatement | |
|---|---|---|
| What it changes | Named provisions only | The whole instrument |
| The original trust | Continues, as amended | Continues, fully rewritten |
| Retitling assets | Not required | Not required, because the trust itself is unchanged in identity |
| Readability after several changes | Degrades quickly | Restored to a single document |
| Risk of internal contradiction | Rises with each amendment | Low |
Because the trust survives either way, neither one requires re-deeding the house or re-registering accounts. That is the single most common misunderstanding in this area, and it cuts both ways: people avoid a needed restatement because they fear a re-funding exercise, and people who create a brand new trust instead of restating skip the re-funding that a new trust genuinely does require.
How Do I Legally Change Beneficiaries or Trustees in a California Trust?
By the same two routes, with one large exception that has nothing to do with the trust at all.
Inside the trust, changing a beneficiary or a trustee is a modification under section 15402. So the sequence is:
- Read the trust’s own amendment provision. If it states a method, follow it. That is still the cleanest path, and after Haggerty it is a belt-and-braces path rather than a mandatory one.
- Ask whether the instrument explicitly makes its method exclusive, or expressly precludes using the revocation procedures for modification. If it does, that method is the only one.
- If it does not, the statutory method is available: a writing, other than a will, signed by the person holding the power of revocation and delivered to the trustee during that person’s lifetime.
- Deliver it, and document delivery. Where the settlor is also the sole trustee this looks like a formality; it is still the statutory requirement, and a dated delivery record costs nothing.
Two structural points about who can act. Where a trust has more than one settlor, section 15401(b)(1) provides that unless the instrument says otherwise, “each settlor may revoke the trust as to the portion of the trust contributed by that settlor,” subject to Family Code section 761, which is not addressed here. And section 15401(b)(2) allows a settlor to grant another person – including a spouse – a power to revoke that settlor’s portion, exercisable during life or after death or both.
The change beneficiaries on a trust california question also has an answer that is not in the trust. Retirement accounts, life insurance and payable-on-death accounts pass by beneficiary designation, and the designation controls regardless of what the trust says. Amending a trust does nothing to an IRA beneficiary form. This is the most expensive mistake in the whole area and it is invisible until someone dies.
One date to check before anything else: under section 15401(e), the manner of revoking a trust created by an instrument executed before July 1, 1987 is governed by prior law, not by section 15401.
Can I Amend a Trust Myself, and What Goes Wrong When People Try?
Legally, often yes. In practice, this is where the failures cluster, and they are failures of execution rather than of drafting talent.
Nothing in section 15401 or 15402 requires a lawyer, a notary or a witness. So the do i need a lawyer to amend my trust question has an uncomfortable answer: not as a matter of law, and yet almost every dispute in this area involves a homemade amendment. Here is what actually goes wrong.
Never delivered to the trustee. The statutory method requires delivery “to the trustee during the lifetime of the settlor.” A signed amendment found in a desk drawer after death was never delivered. Where the settlor is not the trustee, this is fatal to the statutory route.
Made by an agent under a power of attorney. Section 15401(c) is categorical: “A trust may not be modified or revoked by an attorney in fact under a power of attorney unless it is expressly permitted by the trust instrument.” A general durable power of attorney, however broad, does not carry this. Adult children discover it at the worst possible moment.
Made by a will. Section 15401(a)(2) says the writing must be “other than a will.” A codicil that purports to change trust dispositions does not amend the trust.
Made after capacity has gone. Capacity is not addressed in the sections above, and this article makes no claim about the standard that applies. It is, however, the ground on which late-life amendments are most often attacked.
Internally inconsistent with earlier amendments. The fourth amendment revises a paragraph the second amendment already deleted. Nobody notices until a trustee has to administer it.
Signed by one settlor of a joint trust. Section 15401(b)(1) limits a single settlor’s revocation to that settlor’s contributed portion unless the instrument provides otherwise.
And one that is new since 2024, in the other direction. Some homemade amendments that were thought invalid under King v. Lynch are valid under Haggerty – and because Haggerty applies retroactively, a family that accepted a distribution on the footing that an amendment failed may have accepted it on a mistaken basis. That runs both ways and it is worth a look at any 2012-to-2024 amendment that was set aside or ignored for form.
Can an Irrevocable Trust Ever Be Changed in California?

Yes, by five routes, and one of them needs neither consent nor a court.
Consent of the settlor and all beneficiaries – section 15404(a). “A trust may be modified or terminated by the written consent of the settlor and all beneficiaries without court approval.” No petition, no judge. If one beneficiary refuses, subdivision (b) lets the others petition with the settlor’s consent, and the court may act “if the interests of the beneficiaries who do not consent are not substantially impaired.”
Consent of all beneficiaries where the settlor is gone – section 15403. All beneficiaries consenting may petition for modification or termination. But subdivision (b) is the brake: if continuance “is necessary to carry out a material purpose of the trust,” the court must find that the reason for modifying “outweighs the interest in accomplishing a material purpose,” and where a valid spendthrift restraint applies the trust “may not be terminated unless the court determines there is good cause to do so.”
Changed circumstances – section 15409. On petition by a trustee or beneficiary, the court may modify administrative or dispositive provisions, or terminate the trust, if circumstances the settlor did not know or anticipate mean that continuing under the trust’s terms “would defeat or substantially impair the accomplishment of the purposes of the trust.” Where necessary, the court “may order the trustee to do acts that are not authorized or are forbidden by the trust instrument.”
Combination or division – sections 15411 and 15412. For good cause, and where it will not defeat or substantially impair the trust purposes or the beneficiaries’ interests, the court may combine substantially similar trusts or divide one trust into several.
Decanting – Probate Code Part 9, the Uniform Trust Decanting Act, effective January 1, 2019. This is the route most people have never heard of, and section 19507(b) states its power plainly: “An authorized fiduciary may exercise the decanting power without the consent of any person and without court approval in compliance with this part.” What it requires instead is notice: not later than 60 days before the exercise, to the settlors if living, every qualified beneficiary, holders of a presently exercisable power of appointment, anyone who can remove or replace the fiduciary, every other fiduciary of both trusts, and in some cases the Attorney General. The notice must include the fiduciary’s reasons, an explanation of the differences between the old and new trusts, copies of both instruments, and a warning in at least 10-point bold type: “If you do not bring a court action to contest the proposed trust decanting (the proposed changes to the trust) within 59 days of this notice, you will lose your right to contest the decanting.”
Anyone entitled to notice may still apply to the court under section 19509, and if they do, subdivision (b) puts “the burden … on the authorized fiduciary to establish that notice was given as required by Section 19507 and that the authorized fiduciary may exercise the decanting power.”
This article describes only sections 19507 and 19509 of the decanting act. Who qualifies as an authorized fiduciary, the difference between expanded and limited distributive discretion, and the tax-related limits are all in sections not read here, and they decide whether decanting is available at all in a given case.
When to Bring Counsel In
Before signing anything, and immediately if an amendment between 2012 and 2024 was treated as invalid.
The before-signing case is not about drafting skill. It is that the failure modes above are procedural and invisible: delivery, the agent problem, the will problem, consistency with prior amendments. A lawyer’s real contribution to a simple amendment is catching the thing that will not surface for twenty years.
The Haggerty case is more urgent than it sounds. Between 2012 and February 2024 the published rule was that a stated amendment method had to be followed. Amendments were rejected on that basis, distributions were made accordingly, and Haggerty applies retroactively. If a family concluded that an amendment failed for form, that conclusion deserves a second look – and if there is a chance a signed amendment was set aside wrongly, the beneficiaries who lost by it have an interest in knowing.
There is also a drafting instruction hiding in the holding. If a settlor wants the trust’s own method to be the only way to amend it – a real objective, usually to guard against a late-life change – the instrument must explicitly make that method exclusive, or expressly preclude using the revocation procedures for modification. Language that merely reserves a right to amend “by acknowledged instrument in writing” does not do it. That is what Haggerty decided.
Related reading includes what a certificate of trust does, how a trust protector adds oversight, the difference between revocable and irrevocable trusts, trust decanting in California, and why you must update your estate plan after a divorce.
Work with Bay Legal
Bay Legal, PC prepares and reviews California trust amendments and restatements, advises trustees and beneficiaries on whether a signed amendment is valid after Haggerty v. Thornton, and handles petitions under Probate Code sections 15403, 15404 and 15409 and decanting under Part 9. Call (650) 668-8000 in Northern California or (213) 668-8000 in Southern California, or schedule a consultation at https://baylegal.com/contact-us/.
Frequently Asked Questions
What is the difference between a trust amendment and a restatement?
Scope, not legal effect – both are exercises of the same power under Probate Code section 15402. An amendment changes named provisions and leaves the rest standing. A restatement replaces the entire text while keeping the same trust in existence, with the same creation date and name. Because the trust itself survives either way, neither requires re-deeding real property or re-registering accounts. After several amendments a restatement is usually the better choice, because stacked patches contradict each other and are hard for a successor trustee to administer.
How do I legally change beneficiaries or trustees in a California trust?
By a modification under section 15402, using either the method the trust states or the statutory method in section 15401(a)(2) – a writing, other than a will, signed by the holder of the power of revocation and delivered to the trustee during that person’s lifetime. The trust’s own method is mandatory only if the instrument explicitly makes it exclusive. Separately, retirement accounts, life insurance and payable-on-death accounts pass by beneficiary designation, and amending the trust does nothing to those forms.
Can I amend a trust myself, and what goes wrong when people try?
Nothing in sections 15401 or 15402 requires a lawyer, a notary or witnesses, but homemade amendments generate most of the disputes. The recurring failures: never delivered to the trustee; signed by an agent under a power of attorney, which section 15401(c) prohibits unless the trust expressly permits it; attempted by will, which section 15401(a)(2) excludes; signed after capacity is in question; inconsistent with earlier amendments; or signed by one settlor of a joint trust, which reaches only that settlor’s contributed portion.
When is a full restatement better than another amendment?
When the document has stopped being readable as one instrument. Practically, that is after two or three amendments, or after any change that touches the dispositive scheme rather than a detail – new beneficiaries, a changed distribution structure, a different trustee succession. A restatement produces a single clean document a successor trustee can administer without cross-referencing four patches, and it removes the risk that an amendment revises a provision an earlier amendment already deleted. It keeps the original trust, so no re-funding is needed.
Can an irrevocable trust ever be changed in California?
Yes, by five routes. Section 15404(a) allows modification or termination by written consent of the settlor and all beneficiaries without court approval. Section 15403 allows all beneficiaries to petition where the settlor is gone, subject to a material-purpose test. Section 15409 allows court modification for circumstances not known or anticipated by the settlor. Sections 15411 and 15412 allow combination or division for good cause. And the Uniform Trust Decanting Act allows an authorized fiduciary to act without consent or court approval, on 60 days’ notice.



