You need a court order to change power of attorney for someone with dementia

If the person with dementia is still legally competent—meaning they can understand what power of attorney means and what they are signing—you can ask them to sign a new power of attorney document that replaces the old one. A notary public or attorney can witness this. But if they have lost that understanding, you cannot straightforward ask them to sign a new document. Instead, you must go to probate court and ask a judge to appoint a conservator or guardian, which gives you legal authority to act on their behalf.

The reason is straightforward: power of attorney only works if the person granting it understands what they are doing. Once dementia has progressed to the point where they cannot understand the document, their signature is not legally valid. A court order is the only way to get the authority you need.

Key Takeaways

  • If the person with dementia still understands what power of attorney means, they can sign a new document to replace the old one, witnessed by a notary.
  • If they no longer understand, you must file for conservatorship or guardianship in probate court, which requires a doctor's statement about their mental state.
  • The person with dementia has the right to contest the guardianship in court, and the judge will appoint an attorney to represent them if they cannot afford one.
  • Conservatorship (financial only) is often faster and less restrictive than full guardianship, and some states allow it without a court hearing.
  • The process takes two to four months on average, so start early if you know the current power of attorney is no longer appropriate.

When the person with dementia can still sign a new power of attorney

Early in dementia, the person may still have moments of clarity and may still understand what a power of attorney document does. If a doctor is willing to state in writing that they have testamentary capacity—the legal term for understanding what you are signing—then a new power of attorney can be valid.

The document itself does not have to be complicated. It names you (or someone else) as the agent and gives you the power to handle their finances, healthcare decisions, or both. You can use a template from your state bar association or have an attorney draft one. The key is that it must be notarized, and ideally a doctor should examine the person shortly before or after signing and write a note confirming they understood what they were doing.

This route is much faster and cheaper than going to court. If you think the person is still capable, ask their doctor directly: "Do you think they understand what power of attorney means?" If the answer is yes, move forward with a new document. If the answer is no or uncertain, you need to go to court.

Filing for conservatorship when they no longer understand

Conservatorship is a court process that gives you control over someone's finances and property. It is the most common route when dementia has progressed and the person can no longer sign documents. You file a petition in probate court (sometimes called surrogate court or family court, depending on your state) and ask the judge to appoint you as conservator.

To file, you will need a doctor's statement—usually called a physician's affidavit or capacity evaluation—saying the person lacks the mental ability to manage their own affairs. You will also need the person's birth certificate, Social Security number, and a list of their assets. The court filing fee varies by state but typically ranges from $200 to $500.

Once you file, the court will notify the person with dementia and any relatives listed in the petition. They have the right to object and ask for a hearing. If they do, the judge will appoint a lawyer to represent them (at no cost to them), and you will have to prove in court that they truly cannot manage their affairs. If no one objects, many states allow the judge to approve conservatorship without a hearing.

Full guardianship versus conservatorship

Conservatorship covers only money and property. Guardianship covers both finances and personal decisions—where the person lives, what medical treatment they receive, what they eat, who they see. Guardianship is more powerful but also more restrictive and requires more court oversight.

For most people with dementia, conservatorship alone is enough. You can handle their bills, pay for care, and manage their home without needing to control their daily life. Guardianship is usually necessary only if the person is refusing medical care, wandering into danger, or if you need to move them to a facility against their wishes.

Some states have a middle option called limited guardianship, where the court specifies exactly which decisions you can make and which the person keeps for themselves. Ask the probate court clerk which option is most common in your state for dementia cases.

What happens after the court appoints you

Once the judge signs the order, you become the conservator or guardian. You can now sign documents on their behalf, pay their bills from their account, and make decisions about their care. You will need to show the court order to banks, insurance companies, and healthcare providers to prove you have this authority.

Most states require you to file an annual report with the court listing the person's assets, what you spent money on, and what decisions you made. This is not burdensome—it is usually a form you fill out once a year—but it is mandatory. Some states also require you to post a bond (a kind of insurance) to protect the person's money, though courts often waive this for family members.

If circumstances change—for example, the person recovers some capacity, or you need to move them to a different state—you can ask the court to modify or end the conservatorship. The person with dementia can also ask the court to end it at any time, though they will need a lawyer to do so.

How long the process takes and what it costs

Filing for conservatorship or guardianship usually takes two to four months from the day you file to the day the judge signs the order. The timeline depends on how busy your local probate court is and whether anyone objects. If the person with dementia or a family member contests it, the process can stretch to six months or longer.

The cost includes the court filing fee (typically $200 to $500), the cost of the doctor's evaluation (usually $300 to $800, sometimes covered by insurance), and possibly an attorney's fee if you hire one. Many people hire an attorney to handle the filing, which costs $1,500 to $3,000 depending on your area. Some legal aid organizations offer free help if your income is low.

If you cannot afford an attorney, you can file the petition yourself. The probate court clerk can give you the forms and walk you through the process. It is not as smooth as having a lawyer, but it is possible.

What to do if the current power of attorney is causing problems

Sometimes the person with dementia signed a power of attorney years ago, naming someone who is now absent, unreliable, or acting against their interests. You cannot straightforward revoke it yourself. You have two options: ask the person to revoke it in writing if they still understand what that means, or file for conservatorship and ask the court to override it.

If you suspect the current agent is misusing the power of attorney—spending the person's money on themselves, for example—you can report this to the probate court or the state attorney general's office. You can also file for conservatorship and ask the judge to investigate. The court has power to order the agent to return money and can remove them from authority.

Do not wait if you see abuse happening. The longer it continues, the more money may be lost, and the harder it becomes to prove what happened.

Frequently Asked Questions

Can I change power of attorney without going to court if the person with dementia refuses to sign?

No. If they refuse to sign and they still have the mental capacity to understand what they are refusing, their refusal is legally binding. You must go to court for conservatorship. If they have lost capacity entirely, you also need a court order—their refusal does not matter, but neither does their consent.

What if the person with dementia objects to the conservatorship in court?

They have the right to object, and the court will appoint a lawyer to represent them. You will have to present evidence (usually the doctor's statement) that they cannot manage their affairs. If the judge believes you, the conservatorship will be approved even if the person disagrees.

Can I change power of attorney if the person is in a nursing home or hospital?

Yes. The location does not matter. If they can still understand and sign, they can sign a new document anywhere. If they cannot, you file for conservatorship the same way. Some hospitals and nursing homes have social workers who can help you understand your options.

Do I need a lawyer to file for conservatorship?

No, but it helps. You can file the petition yourself using forms from your probate court. An attorney makes the process faster and reduces the chance of mistakes, but it is not required. Legal aid may cover the cost if your income is low.

What if I am the power of attorney but I want to step down?

You can resign by writing a letter to the person with dementia (or their family) and the institutions you have been dealing with. But if they have lost capacity, resigning leaves them without anyone to manage their affairs. The court may appoint a conservator to replace you, or a family member may file to become conservator instead. Give notice in writing so there is a record.