When Someone With Dementia Needs Guardianship (vs Power of Attorney)

How durable power of attorney works while a person with dementia still has capacity, when families turn to court-appointed guardianship or conservatorship, and why an elder-law attorney matters—plain language from the Alzheimer's Association and CFPB.

By Jim Pavlish, Editor · Last updated: November 6, 2026 · Editorial policy

Short answer: a durable power of attorney is a document the person with dementia (the principal) signs while they still have legal capacity, naming a trusted agent to make money or health decisions later. Guardianship (sometimes called conservatorship) is different: a court appoints a guardian after the person can no longer provide for their own care—often when there is no workable power of attorney, the family cannot agree, or there is no family. The Alzheimer's Association says acquiring guardianship takes time, involves an attorney and court testimony, and places the guardian under court supervision. This page is general information, not legal advice. Laws vary by state; talk with an elder-law attorney about your situation.

Families who still have time to plan should start with our broader Legal Planning and Planning Your Future Care guides. If a diagnosis is recent, After a Diagnosis: First Steps covers first steps.

Why the difference matters

Dementia gradually affects the ability to understand and sign complex documents. The Alzheimer's Association urges families to put legal plans in place as early as possible so the person can take part and name who should decide for them later. Waiting until a crisis often leaves only the court path.

Two common tools get confused:

• Power of attorney (POA) — private planning the person chooses in advance.
• Guardianship / conservatorship — a public court process after capacity is largely gone.

The Consumer Financial Protection Bureau (CFPB) publishes separate plain-language guides for people who serve as a power of attorney agent and for people who are court-appointed guardians of property (conservators)—a reminder that the roles and duties are not the same.

Power of attorney while capacity remains

According to the Alzheimer's Association's legal-documents guidance:

• A power of attorney lets the person with dementia (the principal) name another person (the agent or attorney-in-fact)—often a spouse, partner, relative or trusted friend—to make financial and other decisions when the person can no longer do so.
• Documents should be written to be "durable," meaning they stay valid after the principal is incapacitated. A non-durable POA may stop working exactly when it is needed.
• Name a successor agent in case the first choice cannot serve.
• The person keeps the right to make their own decisions as long as they have legal capacity. A POA does not let the agent override the principal before capacity is lost.
• Once the principal cannot make decisions, the agent may manage income and assets and must act according to the person's wishes and in their best interest.

A separate power of attorney for health care (advance directive or health care proxy) names someone to make medical decisions—doctors, treatments, care settings and later end-of-life choices—when the person cannot. Couples who are not in a legally recognized relationship are especially vulnerable without these papers, the Association notes. See Financial Planning and Paying for Care and Hospice and End-of-Life Care.

Guardianship when capacity is gone

The Alzheimer's Association explains guardianship/conservatorship this way:

• A guardian or conservator is appointed by a court to make decisions about a person's care and property.
• Guardianship is generally considered when a person with dementia can no longer provide for their own care and either the family cannot agree on the care needed or there is no family.
• Getting guardianship takes time. It usually means hiring an attorney and testifying in court.
• A guardian may make health care and financial decisions and also help ensure day-to-day needs for safety, food, shelter and care are met.
• Guardians are responsible to and supervised by the court.
• Rules vary by state. Anyone considering this path should consult an elder care attorney familiar with that state's process.

Guardianship is a serious step that can limit legal rights. It is often avoidable when durable powers of attorney are completed early—which is why planning-ahead guidance puts so much weight on timing.

Side-by-side (plain language)

Exact labels ("guardian of the person," "conservator") differ by state—an elder-law attorney can translate the chart into your state's forms.

What families can do now

From the Alzheimer's Association planning-ahead guidance: early legal planning lets the person express wishes, name decision-makers, and work through long-term care and money issues before crisis. Planning should cover health care needs, finances and property, and naming someone to decide later.

Practical steps many attorneys discuss (state-specific details vary):

1. See an elder-law attorney soon after diagnosis, before a hospital crisis if you can.
2. Cover financial and health care POA, plus a will and any living-will or POLST questions clinicians raise.
3. Agree on agents and backups as a family while the person can still take part.
4. Keep copies where the agent and doctors can find them.
5. Watch for pressure or scams—someone pushing a confused person to change papers is a red flag (see Protecting Against Scams).

If capacity is already gone and there is no agent, call an elder-law attorney about guardianship or other court options. The Alzheimer's Association Helpline (800-272-3900) can point to local resources; it does not replace a lawyer.

Common questions

Can we use power of attorney after Mom no longer understands documents?

A durable POA signed earlier, while she had capacity, can still authorize the agent after capacity is lost—that is the point of making it durable (Alzheimer's Association). A new POA generally cannot be created once the person lacks capacity. If nothing was signed, families often need to ask a court about guardianship; talk with an elder-law attorney.

Is guardianship the same as power of attorney?

No. POA is a document the person chooses in advance. Guardianship is a court appointment after the person can no longer manage their own care, often when there is no family agreement or no family (Alzheimer's Association). The CFPB even publishes different fiduciary guides for POA agents and for court-appointed guardians.

Who supervises a guardian?

Guardians are responsible to and supervised by the court, and state rules differ (Alzheimer's Association). That oversight is one reason the process is slower than signing a POA.

Where should we start if we have not done any paperwork yet?

If the person can still participate, start with Legal Planning and an elder-law attorney while capacity remains. If they cannot, contact an elder-law attorney about guardianship options and call the Alzheimer's Association Helpline at 800-272-3900 for local resource guidance. See also After a Diagnosis: First Steps and Planning Your Future Care.

Sources

1. Alzheimer's Association: Legal Documents
2. Alzheimer's Association: Planning Ahead for Legal Matters
3. Consumer Financial Protection Bureau: Guides for managing someone else's money
4. Alzheimer's Association: 24/7 Helpline

Not medical advice. This article is general information, not a diagnosis or treatment plan for any individual. Talk with a doctor about your situation.

Related articles

• Legal Planning
• Financial Planning and Paying for Care
• After a Diagnosis: First Steps
• Planning Your Future Care
• Caregiving Guide: Where to Start
• Medicare, Medicaid and Dementia Care