Can a Power of Attorney Change a Will in California?

A power of attorney does not reach a will. California treats making a will as personal to the person making it, so an agent cannot sign one for the principal, cannot revoke one, and cannot rewrite one. A document that an agent executed as a will is not a valid will, whatever the power of attorney says.

That is the easy half of the answer. The harder half is that an agent can often change who ends up with what, without touching the will at all.

What can an agent actually do?

That last row causes real problems in practice. Families often keep using the power of attorney at the bank after a death because nobody told them it expired. It did, and what to do instead is on bank account of a deceased parent.

A power of attorney is an authority to manage the principal's financial affairs while they are alive. California does not permit an agent to make, alter or revoke the principal's will, and a will executed by an agent on the principal's behalf is not valid. A trust is different in one respect: a revocable trust can be amended during the settlor's lifetime, but an amendment signed by an agent generally requires both that the trust permits amendment by an agent and that the power of attorney expressly grants that authority, so a general financial power will not do it. The authority also ends at the principal's death, at which point only a personal representative appointed by the court, or a successor trustee under the trust, may act. Where an agent has used the power to move assets to themselves or their family, the questions are whether the transfers were authorized, whether they were in the principal's interest, and whether the principal was in a position to resist them.

Can an agent change a trust instead?

A revocable living trust can be amended while the settlor is alive, which is why agents sometimes try that route instead. Two conditions usually have to be met: the trust must permit amendment by an agent, and the power of attorney must grant that authority expressly. General language about managing property does not supply it.

An amendment signed without that authority is open to challenge, and so is one signed with it if the circumstances were wrong. The grounds and the process are on how to contest a living trust, and the deadline rules on trust contest deadlines. Where the change was made by the settlor rather than the agent, but under pressure, the same page covers the statutory presumption that applies to gifts to drafters and certain caregivers. A legitimate court-supervised route to changing an irrevocable trust also exists, and it is on trust modification.

Why this question usually arrives late

People rarely ask it in the abstract. They ask because a document has appeared, or because money has moved. The recurring pattern is an agent who became the principal's main contact with the world, then made transfers that favoured themselves, and finally produced a document nobody had seen before.

The legal questions that fit that pattern are:

• Undue influence, if the principal signed something under pressure. See undue influence.
• Lack of capacity, if they could not understand what they signed. See lack of capacity and contesting a will because of dementia.
• Financial elder abuse, if property was taken or retained for a wrongful use. See financial elder abuse.
• Recovery of specific property, where an identifiable asset left the estate. See property recovery.

What remedies exist?

If an agent purported to sign a will, the document simply is not one. The estate passes under the last valid will, or under intestate succession if there is none, and the person offering the invalid document has an obvious problem in the probate proceeding, which is described on will contest and contested probate.

Where the issue is transfers rather than documents, the agent can be required to account for what they did with the principal's property, and to return what was taken. Where the agent is also now acting as executor or trustee, the same conduct supports removal and a personal charge for the loss, which is the mechanism on trustee surcharge.

What should you do if you suspect it happened?

1. Gather the documents: the power of attorney, the earlier will or trust, the new one, and any amendments.
2. Pull the financial records for the period in question, including statements and transfer confirmations.
3. Note who benefited from each change, and when each change happened relative to the principal's condition.
4. Preserve your own contemporaneous material: messages, photographs with dates, care notes.
5. Get advice before a deadline starts running. What you can ask for as a beneficiary in the meantime is on beneficiary rights.

Questions worth bringing to a lawyer

• What does the power of attorney actually authorise, in its own words?
• Was there an earlier estate plan, and how does the new one differ?
• Did the agent benefit, directly or through family?
• What was the principal's condition when each document was signed?
• Did any asset move by beneficiary designation or title rather than by will?

If a document has appeared that does not look right, we answer at (213) 695-7353 around the clock, or you can tell us what happened in writing. Nothing you say commits you to anything.