Dementia and power of attorney: when it's too late to sign

The diagnosis arrives, and so does a quiet question. Is it too late to put things in order? Many families assume the answer is yes, and that the window closed the day the doctor said the word.

It usually didn't. This page explains how dementia and power of attorney fit together: what a diagnosis does and doesn't decide, and what happens if signing is no longer possible. It's part of our guide to what happens if you can't speak for yourself.

Does a diagnosis mean it's too late?

No, not by itself. The National Institute on Aging says people with early-stage Alzheimer's or a related dementia "can often understand many aspects and consequences of legal decision-making" (NIA fact sheet).

The same fact sheet says some documents must be made while the person has "legal capacity." A durable power of attorney for finances is one. The fact sheet describes that in plain words as still being able to understand the decisions and what they might mean.

Washington's law points the same way in its guardianship statutes. An adult is presumed to have legal capacity (RCW 11.130.037). And a medical diagnosis by itself is not enough to justify appointing a guardian (RCW 11.130.265).

So who decides whether someone can sign?

There isn't a single moment when a bell rings. The exact legal standard for signing a document comes from each state's law and court decisions, and we won't reduce it to a checklist here. A person can be able to sign one day and less able on a bad afternoon.

In practice, the person drafting and witnessing the document is the first check. The NIA recommends a lawyer for advance planning documents, partly because a lawyer can interpret state law and suggest ways to make sure wishes are carried out. A good drafter meets the person directly, asks open questions, and listens to the answers in the person's own words.

Our post on who decides capacity explains the three settings where capacity gets judged: a doctor for a treatment decision, the trigger in a power of attorney, and a court.

Why sooner is kinder

Here is a typical case, a composite. Eleanor, 72, was told she had early Alzheimer's in March. She lives in Spokane with her terrier, Rosie, and her only son lives in Boston.

She signed a durable financial power of attorney and a medical power of attorney in May. She named her son first and a trust company as backup. In the meeting she said, in her own words, why she chose them and that Rosie should stay with her neighbor if she ever moved.

Two years later, Eleanor couldn't have done that. Because she signed early, her son never had to go to court.

Signing early helps in three ways:

• It's clearer. The person can explain their choices, and the drafter can see they understand.
• It leaves a better record. The drafter can note what the person said and why, while it's easy to say.
• It gives time to talk. The person can tell their agent what matters: the house, the dog, the doctor they trust.

What should the documents include?

Dementia usually unfolds over years, so the documents need to last. In Washington, check these points:

One choice deserves thought. A power of attorney can start now, or "spring" into effect at incapacity. In Washington, if a springing document doesn't name who confirms the trigger, a physician or licensed psychologist who examined the person must find it in writing (RCW 11.125.090).

With a slow condition, that moment can be hard to pin down. Many families find an immediate document simpler, since the person keeps their own authority while they can use it. Our post on springing vs immediate powers of attorney weighs both.

Add a health care directive and plain-language wishes too. Our page on the advance directive covers the formal piece, and the care plan covers the everyday details.

What if it really is too late?

Sometimes the person can no longer understand what they'd be signing. Then a new power of attorney isn't an option, and families look at other routes.

For medical decisions, Washington doctors turn to a statutory list: a guardian, then a health care agent, then a spouse, adult children, parents, siblings and other relatives (RCW 7.70.065). Everyone available in the same class must agree. Our post on medical decisions without a power of attorney explains how that works.

For money and property, there's no similar list. The usual route is a court. A judge may appoint a conservator only on clear and convincing evidence, and only if less restrictive options won't work (RCW 11.130.360). Our pages on conservatorship vs power of attorney and guardianship vs power of attorney walk through the process.

A court can also do something narrower. Washington allows a protective arrangement that authorizes a single transaction instead of an ongoing conservatorship (RCW 11.130.590).

What if an older document already exists?

Look for it before assuming anything. A durable power of attorney signed years ago keeps working after incapacity. Check for the durability wording, the agent's name and a backup.

If a court later appoints a guardian, the guardian can't revoke that power of attorney. The agent's decisions within their authority take precedence unless the court orders otherwise (RCW 11.130.335).

If you're an adult child helping a parent through this, our post on power of attorney for an elderly parent is written for you. If there's nobody obvious to name, dementia when nobody is named covers that situation. Our guide to choosing professional help compares a friend, a lawyer and a trust company. A Kinly membership includes both powers of attorney, written for your state.

Common questions

Can someone with dementia sign a power of attorney?

Often, especially early on. A diagnosis does not by itself decide the question. What matters is whether the person can understand the document when they sign, so it's best to act soon and to use a lawyer or drafter who meets them directly.

Who decides if a person with dementia can sign legal documents?

There's no single official who signs off in advance. The drafter and the witnesses or notary see the person at signing, and a court can review the question later if someone challenges the document. Doctors judge capacity separately for medical treatment decisions.

What happens if a parent with dementia never signed a power of attorney?

For health care, Washington doctors turn to a statutory list of relatives. For money and property, families usually need a court to appoint a conservator, or a narrower protective arrangement. Both involve a petition, an evaluation and a hearing.

Should a power of attorney for dementia be springing or immediate?

It depends on the person, but with a gradual illness an immediate document is often simpler. A springing one waits for someone to confirm incapacity in writing, and with dementia that moment can be unclear. Either way, make sure it's durable.

Sources

• National Institute on Aging: Legal and Financial Planning for People Living With Dementia (fact sheet, via GovInfo)
• RCW 7.70.065: Persons authorized to consent for patients without capacity
• RCW 11.125.040: Power of attorney, termination at incapacity unless durable
• RCW 11.125.080: Conservator or guardian nomination
• RCW 11.125.090: When a power of attorney is effective
• RCW 11.125.110: Coagents and successor agents
• RCW 11.125.240: Authority that requires a specific grant
• RCW 11.130.037: Presumption of legal capacity
• RCW 11.130.265: Basis for appointment of guardian for adult
• RCW 11.130.335: Special limitations on guardian's power
• RCW 11.130.360: Basis for appointment of conservator
• RCW 11.130.590: Protective arrangement instead of conservatorship