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What this state guide covers
A quick view of the questions, practical details and source notes below.
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Updated August 3, 2026. Quick answer: Alternative, not cumulative: the POA must be dated and signed by the principal (or by another adult in the principal’s presence, at the principal’s direction), and EITHER acknowledged before a notary public OR signed by at least two qualifying witnesses (Prob. Code §§4121-4122). Notary and witnesses are not both required. This state puts a form in its statute. A power of attorney here must say it is durable, or it ends at incapacity — which is the moment it was written for.
| Execution | Alternative, not cumulative: the POA must be dated and signed by the principal (or by another adult in the principal’s presence, at the principal’s direction), and EITHER acknowledged before a notary public OR signed by at least two qualifying witnesses (Prob. Code §§4121-4122). Notary and witnesses are not both required. |
| Statutory form | Yes — Cal. Probate Code § 4401 et seq. (Uniform Statutory Form Power of Attorney Act) |
| Durability | Must say it is durable |
| Who may not witness | the attorney-in-fact (agent) may not serve as a witness; witnesses must be adults (Prob. Code § 4122) |
| Agent must accept in writing | No |
| Statute | Cal. Probate Code Division 4.5 (§§ 4000-4545) |
California power of attorney form: what the statute says
Each line is quoted from the California statute itself.
- Execution. Cal. Prob. Code 4121(a): “The power of attorney contains the date of its execution…”
- Witnesses. Cal. Prob. Code 4121(c) and 4122: “The power of attorney is either (1) acknowledged before a notary public or (2) signed by at least two witnesses who satisfy the requirements of Section 4122.”
- Recording for real estate. Cal. Gov. Code 27287: “…before an instrument can be recorded its execution shall be acknowledged…” This is the state’s general recording statute for land documents.
- Statutory form. Cal. Prob. Code 4401: “The following statutory form power of attorney is legally sufficient when the requirements of Section 4402 are satisfied:” Section 4402(c) requires that “The signature of the principal is acknowledged.”
Settling the estate is a separate cost: California Probate Cost 2026.
What decides whether the document is valid
Alternative, not cumulative: the POA must be dated and signed by the principal (or by another adult in the principal’s presence, at the principal’s direction), and EITHER acknowledged before a notary public OR signed by at least two qualifying witnesses (Prob. Code §§4121-4122). Notary and witnesses are not both required. Get this wrong and the document is not merely weak — it may be void, and you will find out at the moment somebody needs to use it.
Who may not witness: the attorney-in-fact (agent) may not serve as a witness; witnesses must be adults (Prob. Code § 4122). This is the condition that most often fails in practice, because the people in the room are usually the people with an interest.
The statutory form
California sets out a form in its statute at Cal. Probate Code § 4401 et seq. (Uniform Statutory Form Power of Attorney Act), but does not publish a free ready-to-use copy. Using the statutory form generally means transcribing it from the statute.
If the free form does not fit your situation
This state puts a form in its statute but does not publish a free filled-in copy, so you are transcribing statutory text either way. LawDepot builds a state-specific power of attorney executed under this state’s witnessing and notary rules. For a complex estate or a likely family dispute, a lawyer is the better route.
LawDepot pays us a commission if you buy through this link — it costs you nothing extra. We are not a law firm and this is not legal advice. Affiliate Disclosure.
Durability — the point most people get wrong
Here a power of attorney must state that it is durable. Without that language it ends exactly when incapacity begins — which is the situation it was almost certainly written for. This is the single most consequential drafting point in this state.
Why a springing power often fails when it is needed, and why durable is usually the better default.
What is and is not settled on this page. The execution requirements above were read directly from this state’s own statute and are stated as verified. Some secondary fields — whether the agent must accept in writing, and the full mechanics of a springing power — could not be pinned down in the sections reached, and are shown as not verified rather than filled in.
If a bank refuses it
California addresses this by statute: Prob. Code §4300: a third party must accord an attorney-in-fact the same rights and privileges as the principal, but is not required to act if it could likewise refuse the principal in the same circumstances. Under §4306, if the attorney-in-fact furnishes an affidavit under §4305, a third person who refuses to accept the exercise of the authority is liable for attorney’s fees incurred in an action or proceeding necessary to confirm the attorney-in-fact’s qualifications or authority, unless the court determines the third person believed in good faith that the attorney-in-fact was not qualified or was attempting to exceed or improperly exercise the authority.
What the form does not solve
- Social Security will not accept it. No power of attorney works there — a representative-payee application is the only route.
- It has to be signed while capacity is intact. The day that closes, the alternative is a court.
- Name a successor agent. A document whose only named agent has died or declined does nothing — how to choose when there is no obvious person.
All 51 jurisdictions compared.
General information drawn from IRS, Medicare, HUD and state statute and regulation, not legal, tax or financial advice. Continuing-care law is state law and differs materially between states; every figure here is year-labelled and every source named. Powers of attorney, guardianship and trusts are governed by STATE law and differ materially between states. Execution requirements decide whether a document is VALID, so verify them against your own state’s current statute before signing anything. We are not a law firm and this is not legal advice.
See How Much Does a Will Cost? (2026): DIY Platforms vs Attorney, In Dollars for more on this.