Getting Access

Parent Has Dementia and No Power of Attorney: Now What?

I talked my mom into signing a power of attorney not long after her diagnosis. I did it the cheap way, online, one evening, mostly because a friend told me I should. I had no real idea what I was buying.

What I was buying was not going to court. It took me another year to understand that.

My parent has dementia and no power of attorney. Is it too late?

Probably not yet, and the assumption that it is may be the most expensive mistake families make in the first year. A diagnosis does not remove a person's ability to sign a legal document. Capacity is judged at the moment of signing, for that particular document, and a lot of people in the earlier stages still have it.

So the first question isn't how to get authority without your parent. It's whether the door is actually still open. Find that out before you spend a dollar on anything else.

Can someone with dementia still sign a power of attorney?

Yes, if they understand what they're signing when they sign it. That's the whole test. Do they grasp what the document does, who it hands authority to, and what that person will be able to do with it?

Capacity isn't a switch that flips on diagnosis day. It moves. Better in the morning for most people, worse when they're tired or rushed or sitting in an unfamiliar room, and it declines unevenly over months rather than all at once. Someone who can no longer manage a checkbook may still understand perfectly well that they want their daughter handling the money.

What matters just as much is who makes that call. Not you, and not your siblings around a kitchen table. An elder-law attorney can sit with your parent, assess whether they understand, and write down that they did, on that day. That contemporaneous note is the thing that protects the document later, when a bank officer or a title company or an unhappy relative decides to look hard at it.

How do you find out if the window is still open?

Call an elder-law attorney and say the situation plainly: there's a diagnosis, there's no power of attorney, and you need to know whether one is still possible. It's most of what they do.

A few things make the visit go better. Book the time of day your parent is at their sharpest. Expect the attorney to want time alone with them, because your parent is the client, not you, and a document signed with an adult child hovering is a document someone can later claim was pressured. Bring what you already have: the diagnosis, the medication list, any existing paperwork. And use that one visit for everything else that needs signing, including the health care documents, so you aren't back in a month asking for an appointment you may not get.

What not to do is print a form off the internet and collect a signature. I understand the appeal. That's roughly what I did, and mine held, but mine was signed early, when nobody could seriously argue she didn't understand it. I've come to think I got lucky rather than smart. If your parent is already far enough along that you're searching for what to do, a downloaded form is the version most likely to be challenged, and the one with nobody to vouch for what your parent understood that day.

What happens if the window really has closed?

Then authority stops coming from a document and starts coming from a judge. Someone petitions a court, provides medical evidence that your parent can no longer manage their own affairs, and asks to be appointed to do it for them.

It's a real proceeding. There's typically an independent evaluator who talks to the family and reviews records, then a hearing, and your parent has the right to object and often to have counsel of their own. If it's granted, the supervision doesn't end. Expect inventories, periodic accountings, and permission needed for decisions a power of attorney would have let you just make. It's slower and costlier than the document would have been, and it's a matter of public record. In a lot of places it also lands closer to all-or-nothing than to the narrow authority you wanted.

What it's called, what it costs, and how finely a judge can tailor it vary enormously depending on where your parent lives, so this is an elder-law attorney's question and not one to settle from search results. It's also the thing my mom's document quietly saved us from. When it came time to sell her house, I could do it because a piece of paper said so. No hearing, no evaluator, no judge deciding whether my mother was competent while she sat there.

What you can do right now, either way

More than most families realize, and none of it needs a signature you can't get.

Start with Social Security, because it was never going to accept a power of attorney anyway. Benefits are managed through an appointment the agency grants directly, so that piece is open to you whether or not any document exists. Redirect the mail through the post office next. It costs almost nothing and turns up accounts nobody knew about. Build the list of what your parent actually has from the paperwork already sitting in the house. And write down what you're seeing, with dates. Those notes help an attorney answer the capacity question, and if you end up in court, they're evidence.

Skip the two shortcuts. Don't add your name to their bank account, and don't start paying their bills from your own money, which quietly turns their debts into something that looks like yours.

If you're at the beginning of this, our free 7 Documents checklist covers what to gather first, and the full guide walks the whole handover through in order.

Frequently asked questions

Can you get power of attorney for a parent already diagnosed with dementia?

Often yes. The diagnosis isn't what decides it. What decides it is whether your parent can understand the document at the moment they sign it, and plenty of people in the earlier stages still can. The way to find out is to ask an elder-law attorney to meet with them and make that assessment, rather than deciding it yourselves at the kitchen table.

What is the difference between guardianship and conservatorship?

Broadly, one covers personal and medical decisions and the other covers money and property, and a court can appoint the same person to both. But the labels genuinely don't hold still from one state to the next, and some places use a single term for the whole thing. Ask an attorney licensed where your parent lives what the roles are actually called there and which one you'd be asking for.

Can I sign a power of attorney on my parent's behalf?

No. Nobody can sign it for them, and that's the entire point of the document. It only means anything because your parent chose to grant it while they understood what they were granting. A signature collected after that understanding is gone can be challenged and undone later, which usually surfaces at the worst possible moment, when a bank or a title company finally looks closely.

This isn't legal, financial, or tax advice — it's a plain-language account of how this plays out in real families, written from managing my own mom's finances since her diagnosis. How capacity is assessed, what a power of attorney must contain to be honored, and what the court process is called and requires all vary by state and change over time, so talk to an elder-law attorney licensed where your parent lives before acting on any of it.