What Is a Power of Attorney, and Why Set One Up Before You Need It?

Detailed Explanation

A power of attorney lets someone else act for you legally. Without one, even a spouse of fifty years generally can't operate an account held in your sole name, sell your house or deal with your pension provider on your behalf. Banks and government agencies need to see legal authority, and being family isn't usually enough.

People make powers of attorney for short, practical reasons (someone to sign papers while they're overseas, for instance), but the reason most people need one is planning ahead for illness, injury or dementia. That's where the type of power of attorney matters.

Ordinary versus lasting, enduring or durable

An ordinary or general power of attorney is usually meant for a set task or a set period, and it generally stops working if you lose the mental capacity to make your own decisions. For planning ahead, that defeats the purpose: loss of capacity is exactly when your family needs someone to have authority.

So most legal systems offer a version that keeps working after capacity is lost. Different countries give it different names:

• Lasting power of attorney (LPA) in England and Wales
• Enduring power of attorney in Australia and Northern Ireland, and in some other countries
• Durable power of attorney in the US

The label changes; the core idea doesn't. All of them have to be made while you still have capacity, which is why they can't be left until they're needed.

Money versus health decisions

A power of attorney is mainly about money, property and legal affairs: paying bills, running bank accounts, dealing with tax and government benefits, managing or selling property. Some systems let you also appoint someone for health and personal welfare decisions, while others handle that through a separate document. For your medical wishes themselves, see what is an advance directive.

What an attorney can't do

An attorney has to act in your interests, not their own, and within any limits you set in the document. They can't change your will for you, and their authority ends completely when you die. After a death the executor takes over, which is one of the first things families discover in the days after a death.

How It Works in Different Countries

The forms, witnessing rules and registration requirements are set locally, and in federations such as Australia and the US they differ between states.

England and Wales. There are two types of lasting power of attorney: one for property and financial affairs, and one for health and welfare. You must be 18 or over and have mental capacity when you make it. An LPA has to be registered with the Office of the Public Guardian before it can be used. As of 2026, GOV.UK lists the registration fee as £92 per LPA (£184 for both), with reductions or exemptions for some people, and says registration takes 8 to 10 weeks if there are no mistakes.

A registered financial LPA can be used straight away with your permission; a health and welfare LPA only applies once you lack capacity. LPAs are legally binding only in England and Wales. Scotland and Northern Ireland have their own power of attorney systems, run through the Office of the Public Guardian (Scotland) and, in Northern Ireland, the enduring power of attorney.

United States. Powers of attorney are governed by state law, so the form and signing requirements depend on the state. A financial power of attorney that continues after incapacity is often called a durable power of attorney. The person appointed is called the agent (or attorney-in-fact). The Consumer Financial Protection Bureau's guide for agents describes their core duties: act only in the person's best interest, manage their money and property carefully, keep it separate from the agent's own, and keep good records. Health care decisions are usually handled by a separate health care power of attorney.

Australia. Each state and territory has its own legislation and forms. A general power of attorney ends if you lose the ability to make decisions; an enduring power of attorney continues. Medical and lifestyle decisions are generally covered by a separate appointment, such as an enduring guardian, depending on the state.

How it works where you are

• In Australia: What is an enduring power of attorney in Australia? covers what an attorney can do, state and territory forms, and how it differs from an advance care directive.
• In the UK and the US: there's no separate page on this yet. Planning ahead with no family in the UK and planning ahead with no family in the US explain lasting and durable powers of attorney in context.

Why Set One Up Before You Need It

The honest answer is that by the time a family realises they need one, it's often too late to make one. Capacity can be lost suddenly, through a stroke, an accident or a fast-moving illness, or gradually through dementia, where there may come a point where the person can no longer validly sign.

Without a power of attorney, families generally have to apply to a court or tribunal for authority, which is slower, can be costly, and puts the choice of who acts in someone else's hands. A power of attorney made in advance lets you choose the person, set limits, and name a backup. It also helps if you have no close family, because you can appoint a friend or a professional; see how do you plan ahead if you have no family or next of kin.

Things to Consider

• Choose for trust and capability, not birth order. The person will have real authority over your money. The eldest child or the closest relative isn't automatically the best choice.
• One attorney or several. Many systems let you appoint more than one, acting together or separately, and a replacement if your first choice can't act. Each option has trade-offs between safeguards and convenience.
• Set limits if you want them. You can often restrict what an attorney may do, such as selling your home, or require them to report to someone.
• Tell people it exists. Your attorney, your bank and close family should know where the document is.
• Consider getting advice when things are complicated. A business, a blended family, property in more than one country, or concerns about family conflict are all good reasons to have a lawyer help with the drafting.

Common Mistakes

• Thinking a will covers this. A will only operates after death. It gives no one authority to act for you while you're alive.
• Assuming family can step in automatically. In most places, being a spouse or child doesn't give legal authority over someone else's sole accounts or property.
• Leaving it too late. Once capacity is lost, a power of attorney generally can't be made.
• Using the wrong type or wrong form. An ordinary power of attorney may stop just when it's needed, and a document made under one country's or state's law may not be accepted elsewhere.
• Carrying on after the death. An attorney who keeps paying bills or moving money after the person has died is acting without authority. Everything passes to the executor.