What is the Difference Between Power of Attorney and Conservatorship?

Short answer: A power of attorney is a document you sign yourself, while you are still competent, naming someone to act for you. A conservatorship is a court proceeding that starts after you can no longer make that choice, where a judge appoints someone to act for you instead. Sign a power of attorney and you control who gets the authority, how far it reaches, and when it kicks in. Wait too long, and your family’s only option once you lose capacity is to ask a court to appoint someone on your behalf.

What does a power of attorney actually let someone do?

A power of attorney is a written document in which you, the principal, name an agent to handle specific matters for you. The most common version covers financial matters: paying bills, managing bank accounts, handling debts and loans, and making other money decisions in your name. You choose the agent, and you decide how broad or narrow the authority is. You can limit it to a single transaction or give it wide reach over your finances.

Under Prob. Code §4120, any adult who currently has the mental capacity to enter into a contract can sign a power of attorney. That is the entire reason timing matters. Once someone has already lost that capacity, they can no longer sign one, and conservatorship becomes the only path left for the family.

What makes a power of attorney valid, and can you take it back?

California sets clear rules for what counts as a valid document. Under Prob. Code §4121, a power of attorney is legally sufficient once it is dated, signed by the principal, and either notarized or signed by two witnesses. § 4122 adds a limit worth knowing: the witnesses have to be adults, and the person named as agent cannot serve as one of them. If you would rather not draft one from scratch, Prob. Code §§4400 through 4402 provide a statutory short-form power of attorney that covers most financial situations without custom language.

You also keep control after signing. Under Prob. Code §4151, you can revoke a power of attorney at any time by signing a writing that says so, and that right cannot be limited or signed away, even by language in the original document. A certified copy of the document carries the same legal force as the original under §4307, and §4303 protects a bank, title company, or other third party that relies on the document in good faith. That combination is what lets an agent actually get things done at a bank counter instead of getting stuck explaining the document line by line.

What happens if a power of attorney isn’t “durable”?

Not every power of attorney survives incapacity, and this is where families get tripped up. A durable power of attorney contains language showing you intended the agent’s authority to continue even after you become incapacitated, as required under Prob. Code §4124. Without that language, the document is non-durable, and under §4155 it terminates automatically the moment you lose capacity, which is exactly when your family needs it most.

An agent’s authority can also end for reasons that have nothing to do with the document’s durability. Prob. Code §4152 lists revocation, the principal’s death, the agent’s removal or resignation, and the agent’s own incapacity as events that cut off an agent’s power. Divorce is its own trigger: under §4154, if your agent was your spouse, a divorce automatically revokes that designation, whether or not anyone updates the paperwork.

How is a conservatorship different from a power of attorney?

A conservatorship is not something you sign. It is a legal proceeding filed in court, typically after someone has already lost the ability to manage their own affairs and never put a power of attorney in place. A judge reviews evidence about the person’s capacity and, if warranted, appoints a conservator to step into their shoes.

Where a power of attorney is chosen by the person it affects, a conservatorship is imposed by the court on someone who, by the court’s own finding, can no longer make that choice. The person under conservatorship, called the conservatee, loses a meaningful amount of personal control. A conservatorship can be limited to managing the estate and finances, or general, reaching into medical decisions and day-to-day personal care as well. Either way, the conservator is a fiduciary supervised by the court, which is part of why the process is slower and more public than simply acting under a signed power of attorney.

Does a power of attorney cover healthcare decisions too?

Financial and healthcare authority are usually handled in separate documents, and a complete plan needs both. On the healthcare side, California uses the Advance Health Care Directive, or AHCD. Under Prob. Code §4605, an AHCD can be a health care instruction, a power of attorney for health care naming an agent, or both combined into one document. Once you sign it, it takes effect without any court involvement or judicial approval, under §4750, which is exactly the outcome a conservatorship is meant to avoid.

If you never sign an AHCD and later cannot make medical decisions for yourself, Prob. Code §4712 sets a statutory priority list of who steps in as your surrogate, generally starting with a spouse or registered domestic partner, then children, then other relatives in a set order. That list may not match who you would actually choose, and it does not let the person you would have picked skip ahead of one you would not.

What to do next

If you or a family member has not signed powers of attorney for both finances and healthcare, that is the first thing to fix, before any decline in capacity takes the option off the table. If someone has already lost capacity and no power of attorney exists, talk to an estate planning attorney about what a conservatorship proceeding would involve and what it would take to avoid one for the rest of the family going forward. A power of attorney is typically part of a broader estate plan, and the right time to put one in place is before a crisis forces the decision. Ridley Law can walk you through the process and get the documents signed while they still count. Call 805-244-5291 to get started.

Figures verified July 2026.