Power of Attorney and Decisions: The Window That Closes Without Warning

Substitute decision-making splits into two questions in almost every legal system: who decides about money and property, and who decides about health and welfare. Each is a separate instrument with separate rules, and both can only be created while the person still has the capacity to create them. That last clause is the entire subject. The day these documents become necessary is almost always a day after the last day they could have been signed.

I put this off. As an only child I had nobody to divide the paperwork with and nobody to nag me about it, and it stayed at the bottom of a list for the better part of a year after my mother’s coronary bypass surgery in April 2022. What forced it was not a crisis or a diagnosis. It was a bank, on the phone, declining to discuss a direct debit on an account that was funding her care, politely and correctly, because I had no authority over it. I stood in a kitchen holding a bill I could not pay from an account I could not see. That is the ordinary way families find out, and it is a much better outcome than the version where somebody finds out in a hospital.

This article sits under caring for a parent at home. It is general information rather than legal advice: the instruments differ by jurisdiction and sometimes by state or province, so take local advice and write down what you were told.

Why is capacity the gate, and what does capacity actually mean?

Because an instrument that delegates a decision has to be made by somebody who could have made that decision themselves. Capacity is the authority you are lending.

In England and Wales the framework is the Mental Capacity Act 2005, and its principles are worth having in front of you because they are quoted at families and rarely explained. A person must be assumed to have capacity unless it is established that they lack it. A person is not to be treated as unable to make a decision unless all practicable steps to help them to do so have been taken without success. And, the principle that matters most in caring, a person is not to be treated as unable to make a decision merely because he makes an unwise decision. Anything done for or on behalf of somebody who lacks capacity must be done in their best interests, and in the way least restrictive of their rights and freedom of action¹.

Two features of that test change how a carer should think about the timing.

• Capacity is decision-specific. Somebody may lack capacity to manage a complex investment portfolio and retain capacity to decide where they live, or to appoint an attorney. A diagnosis is not a switch.
• Capacity is time-specific. It fluctuates, particularly during illness, and it is judged at the moment the decision is made. Which means a document can sometimes be validly made in a good week that could not be made in a bad one, and it also means nobody should be written off on the basis of a bad afternoon.

The distinction between an unwise decision and an absent capacity is the one carers most need and most often have taken away from them. When a parent refuses help covers it in full, including what a carer can and cannot override, and it is the companion piece to this page.

What are the two instruments, and why does the split matter?

Because a bank and a hospital are asking different questions, and an authority that answers one does not answer the other.

Money and property. Banking, bills, benefits, investments, pensions, dealing with a property, and paying for care. This is the instrument that turns a carer from somebody with knowledge into somebody with standing.

Health and welfare. Medical treatment, where the person lives, day to day care arrangements, and in some jurisdictions decisions about life-sustaining treatment where that has been expressly authorised.

Families very often set up the first and assume it covers the second. It does not. The discovery usually happens in a corridor, during a conversation about a discharge destination or a treatment decision, at exactly the moment when nobody has capacity for a paperwork problem. Set both up, in the same sitting, or make a deliberate decision not to and know why.

What is it called where you live?

The mechanism is near-universal and the names are not. Here is the map.

System	Money and property	Health and welfare	The fallback if nothing was set up
England and Wales	Lasting power of attorney for property and financial affairs, registered with the Office of the Public Guardian	Lasting power of attorney for health and welfare, registered separately	Deputyship through the Court of Protection
Scotland and Northern Ireland	Separate systems with their own instruments and registering bodies; the English forms do not apply	As for money: check the local instrument by name	A court process under the local framework
Ireland	Arrangements under the Assisted Decision-Making (Capacity) Act framework, with enduring powers made under the older law treated differently	Advance healthcare directives and decision-support arrangements under the same framework	An application under the same Act’s supervision arrangements
United States	Durable power of attorney for finances, governed by state law, so the form and the requirements vary by state	Health care proxy or health care power of attorney, plus an advance directive or living will	Guardianship or conservatorship, through a state court
Australia	Enduring power of attorney, under state and territory law	Enduring guardianship, plus advance care planning documents	A tribunal or court appointment under state or territory law
Canada	Power of attorney for property, provincial	Personal directive, representation agreement or the provincial equivalent	A provincial guardianship or committee process

Two things to take from the table rather than the detail. First, registration is part of the job. In England and Wales a lasting power of attorney has to be registered with the Office of the Public Guardian before it can be used, and registration takes time, so a document sitting unregistered in a drawer is not an instrument yet². Second, the instruments are not portable. An Australian enduring power of attorney made in one state may not operate in another, and a document made in one country will not necessarily be recognised in the next. If the person you care for splits their year between two jurisdictions, say so to whoever advises you.

Ireland’s framework is worth naming specifically because it changed: the Assisted Decision-Making (Capacity) Act framework introduced a graded set of decision-support arrangements rather than a single all-or-nothing instrument, and enduring powers of attorney created under the earlier law are treated under different rules³. Australia’s advance care planning route is documented by the Department of Health and Aged Care alongside its palliative care information, which is a reminder that the health instrument and the end-of-life conversation are the same conversation⁴.

What can an attorney do, and what can they not?

Less than families expect, and under more supervision than they expect. This is a fiduciary role rather than a promotion.

What an attorney cannot do:

• Override a decision the person can still make for themselves. The authority activates for decisions the person lacks capacity to make, decision by decision. Holding a registered instrument does not make you the decision-maker for everything.
• Act in the family’s interests rather than the person’s. The best interests standard is about them, and it takes account of their past and present wishes, their beliefs and values, and the factors they would have considered¹.
• Take the least convenient route when a less restrictive one exists. The least restrictive principle is a live constraint, not a preamble¹.
• Mix money. Their money stays separate from yours, in their accounts, with a record.

What an attorney must do:

• Keep records. Dated, boring and complete. What was spent, on what, and why. This is the same discipline as the rest of the job: keeping a care file.
• Consult. Including with the person themselves, and with anyone else named or engaged in their care.
• Expect to be able to justify a decision to a supervising body, because in every jurisdiction here somebody can ask.

Where more than one person holds the authority, the appointment can usually be joint, meaning all must agree, or joint and several, meaning any one can act. That single choice causes more family friction than the appointment itself: joint appointments are safer and slower, and a joint appointment where two siblings do not speak is a mechanism for paralysis. Sharing care with siblings covers how that gets decided before it becomes an argument.

What do you do if capacity has already gone?

You apply to a court, and you start today, because the timeline is measured in months and the bills are not.

The route has a different name in each system: deputyship through the Court of Protection in England and Wales, guardianship or conservatorship in the United States, tribunal appointment in the Australian states and territories, and provincial guardianship processes in Canada. The pattern is identical everywhere. It is slower than making an instrument, it costs more, it is supervised more closely, it may require ongoing reporting and a security bond, and a court rather than the person chooses who is appointed.

While that runs, three narrower workarounds keep the lights on. None of them is a substitute and each has limits:

• An appointee arrangement for benefits. Most social security systems have a mechanism allowing somebody to receive and manage benefits on behalf of a person who cannot manage them. It covers the benefit only, and nothing else.
• A third-party mandate on an account. Some banks will permit limited operation of an account by a named person, agreed while the account holder can still agree to it. Which makes it a pre-capacity tool rather than a rescue.
• The best interests process in a clinical setting. Where a health decision has to be made and nobody holds a health and welfare authority, the decision is made in the person’s best interests, and close family are consulted as part of it. You are a participant in that process rather than the decider, and knowing that changes how you prepare for the meeting: being heard in appointments covers how to make your knowledge count in a room where you do not hold the pen.

What should you write down while somebody can still tell you?

More than the law requires, in their words, dated. The legal instrument decides who holds a decision. What it does not do is tell that person what to decide.

Six things worth recording while somebody can still express them:

1. Where they want to live, and under what circumstances they would accept a move.
2. What matters more to them than length of life, if anything, and what would make a day worth having.
3. What they would refuse. Some jurisdictions give a formally documented refusal of specific treatment legal force; all of them give it weight in a best interests process.
4. Who they trust, and equally who they would not want consulted.
5. The practical map: accounts, insurers, the solicitor, where the will is, passwords, the pension, and who has already been told what.
6. Their funeral and their preferences at the end, which is a conversation nobody wants and everybody who has had it is glad they had. Palliative care at home covers where that conversation belongs and who to have it with.

If the person you care for has dementia, the early stage is the only window in which most of this is possible, and it closes quietly rather than with an announcement: dementia care at home covers the whole course, and the legal and financial planning belongs in the first stage of it rather than the second.

Why the window is closing on more families every year

Because the population reaching it is growing. By 2030, one in six people worldwide will be aged 60 or over, about 1.4 billion, up from 1 billion in 2020, and by 2050 the figure reaches 2.1 billion, 22 percent of the world’s population, including 426 million aged 80 and over, triple the 2020 number (WHO, Ageing and health, updated October 2025)⁵.

The caring workforce absorbing that is already substantial and already stretched. Census 2021 counted 5.0 million unpaid carers in England and Wales, of whom 1.5 million were caring 50 or more hours a week (ONS, published January 2023)⁶. Among carers responding to Carers UK’s 2025 survey, a self-selecting sample of 10,539 people that Carers UK explicitly says is not representative, 60 percent felt anxious or stressed about their finances (State of Caring 2025: The cost of caring, published October 2025)⁷. Financial authority is not an abstraction to a household in that position. It is the difference between paying a bill and watching it escalate.

Two practical prompts, then. Ask for your own carer’s assessment in your own right while you are dealing with the paperwork, because in England and Wales it is a legal duty rather than a favour: the Care Act 2014, section 10, requires the local authority to carry out a carer’s assessment where somebody provides or intends to provide care for another adult and appears to have any level of need for support⁸. And do the money arithmetic in the same window: care fees and means testing covers what will be counted and what will be disregarded, and paying for care and what you can claim covers the whole picture, including the point that transferring assets to reduce a future care charge is treated seriously in most systems and needs local advice before anybody does anything.

Where to start this month

If the person you care for still has capacity, four actions, in this order:

1. Have the conversation once, badly, rather than perfectly, never. “If you got ill and could not tell them what you wanted, who should they ask” is a sentence that opens it without asking anyone to contemplate their own death.
2. Find out what the instruments are called where they live, and get both of them: money and health.
3. Register them. An unregistered document is not yet an authority².
4. Tell the institutions. Bank, benefits office, GP practice, and whoever holds the pension. An instrument nobody has been shown produces the same phone call I had.

And take local advice where the estate is complicated, where there is property in more than one jurisdiction, where the family is likely to disagree, or where there is any doubt about capacity on the day. Those are precisely the cases that get challenged later, and a challenge lands on the person least able to withstand it.

The thing this page will not solve

None of this is a substitute for noticing. A registered authority does not tell you that somebody is unwell, and the most useful thing any family holds is still a person who knows what the baseline was.

If the person you look after is more confused than they were yesterday or the confusion comes and goes, has had a fall, has stopped eating or drinking, has a new fever, or has new or worsening pain, including agitation in somebody who cannot tell you what hurts, that is a same-day call rather than a legal question. Spotting when someone is getting worse sets out the signs and exactly what to say.

Who to ring: in the United Kingdom, their GP surgery, or NHS 111 out of hours. In Ireland, their GP or the out of hours GP service. In the United States, their own doctor’s office, or the nurse line their plan runs, or an urgent care center. In Australia, their GP, or healthdirect on 1800 022 222. In Canada, their family doctor or the provincial health line, 811 in most provinces.

Use the emergency number immediately for changed breathing, chest pain, one-sided weakness, changed speech, a first seizure, an unrousable person, or bleeding that will not stop: 999 or 112 in the United Kingdom and Ireland, 911 in the United States and Canada, 000 in Australia, 112 across the European Union.

Paperwork can wait a fortnight. The other thing cannot, and the paperwork is much easier to do while somebody is well enough to sign it, which is the argument this entire page has been making.