When you might need someone to sign a power of attorney for you

You need a power of attorney signed when you want someone else to handle money, property, or medical decisions on your behalf — either right now or if you become unable to decide for yourself later. The person who signs is called the principal. The person you name to act for you is called the agent or attorney-in-fact.

Common reasons people sign a power of attorney include managing bills while traveling, handling a parent's finances during a hospital stay, selling property when you cannot be present, or making sure someone can pay your medical bills if you have a stroke or accident. You do not have to be elderly or sick to need one — a young parent might sign one so a trusted relative can make medical choices for their children if both parents are in an accident.

The key point: you sign a power of attorney while you are able to make decisions. Once you cannot — because of illness, injury, or death — no new power of attorney can be created on your behalf.

Key Takeaways

  • You sign a power of attorney to let someone else handle your finances, property, or medical decisions while you are still able to make that choice.
  • A power of attorney only works while you are alive and mentally able to understand what you are signing; it ends at death.
  • Different types of powers of attorney cover different decisions — financial, medical, or both — so you choose what authority your agent actually has.
  • Your agent must be someone you trust completely, because they can act on your behalf even when you are not present or aware.
  • State law controls what forms are valid and what witnesses or notarization you need, so the rules differ by location.

Financial power of attorney: who signs and why

A financial power of attorney lets your agent pay bills, manage bank accounts, sell property, or handle investments in your name. You sign this if you want someone to take over money matters while you are alive and able to decide — not after you die.

People commonly sign a financial power of attorney when they are about to have surgery and want someone to pay their mortgage and utilities during recovery, when they travel for months and do not want to manage accounts from abroad, or when they are aging and want an adult child to take over before a health crisis forces the issue. A business owner might sign one so a partner can sign contracts if the owner is unavailable.

You can make it durable, which means it stays in effect even if you become mentally unable to manage your own affairs — this is the version most people use for long-term planning. Or you can make it non-durable, which ends automatically if you lose mental capacity. You can also set an end date, so the power expires on a specific day whether you want it to or not.

Healthcare power of attorney: who signs and why

A healthcare power of attorney (sometimes called a healthcare proxy or medical power of attorney) lets your agent make medical decisions for you if you cannot — such as choosing whether to continue life support, consenting to surgery, or deciding where you receive care. You sign this while you are mentally able to understand what medical choices you are authorizing.

This is especially important if you are unmarried, because hospitals may not let a parent or sibling make decisions without a signed document. A parent of minor children should sign one naming a guardian who can consent to medical treatment if both parents are incapacitated. Someone with a chronic illness might sign one so their partner can speak to doctors and access medical records.

Unlike a financial power of attorney, a healthcare power of attorney typically only takes effect when you cannot make decisions yourself — it does not let your agent override your choices while you are conscious and able to communicate. Some states let you attach a living will to your healthcare power of attorney, spelling out what kind of care you do or do not want in specific situations.

Who should not sign a power of attorney

You should not sign a power of attorney if you do not fully understand what you are signing or what authority you are giving away. If you are confused about the document, have someone explain it to you — a lawyer, a family member you trust, or a social worker — before you sign. Signing something you do not understand can leave you vulnerable to financial abuse.

Do not sign a power of attorney under pressure or because someone is pushing you to do it quickly. A legitimate request can wait for you to read the document carefully and, if you want, have a lawyer review it. If you feel pressured, confused, or unsure about the person asking you to sign, that is a signal to slow down and get outside information.

If you are already unable to make decisions — because of dementia, a severe stroke, or another condition that has taken away your mental capacity — you cannot sign a new power of attorney. At that point, a family member would need to go to court to become your legal guardian or conservator instead, which is slower and more expensive.

What happens after you sign

Once you sign a power of attorney, your agent can usually act when ready — they do not have to wait for you to become unable to decide. Some people give their agent a springing power of attorney, which only becomes active when a doctor certifies that you cannot make decisions yourself. This gives you more control but can create delays and arguments about whether you are actually incapacitated.

Your agent is legally required to act in your best interest and keep records of what they do with your money or medical decisions. They cannot use your power of attorney to benefit themselves, change your will, or make decisions you have specifically forbidden. If your agent breaks these rules, you can revoke the power of attorney while you are able, or a family member can sue them after you die or become incapacitated.

You can revoke a power of attorney at any time while you are mentally able to do so. You typically do this by signing a written revocation and giving copies to your agent, your bank, your doctor, and anyone else who has a copy of the original document. Once you die, the power of attorney ends automatically — your agent has no authority over your estate, which is handled by your will or the laws of your state.

State rules for signing a power of attorney

Every state has its own rules about what makes a power of attorney valid. Most states require you to sign in front of a notary public, and some require witnesses as well. A few states have specific forms you should use, while others let you write your own as long as it meets the legal requirements.

Some states recognize a statutory power of attorney, which is a standard form that banks and hospitals accept without question. Using your state's statutory form makes it easier for your agent to act — banks are less likely to refuse it or demand extra proof. You can find your state's form through your state bar association, your secretary of state's office, or a legal document service.

If you move to a different state after signing a power of attorney, check whether your new state recognizes it. Most states honor powers of attorney signed in other states, but some have specific requirements. If you are unsure, having a lawyer in your new state review it or create a new one under local law can prevent problems later.

Choosing your agent wisely

Your agent should be someone you trust completely — they will have access to your money, medical information, and the power to make major decisions about your life. Many people name a spouse, adult child, or close friend. Some people name a professional, like a lawyer or accountant, if they do not have family they trust or if the financial matters are complex.

Your agent should be willing and able to do the job. They need to understand what you want, be organized enough to keep records, and be willing to act when you need them to — which might mean dropping everything if you have a medical emergency. It is worth having a conversation with the person you want to name before you sign the document, so they know what you are asking of them and can say yes or no.

You can name alternate agents in case your first choice is unavailable or unwilling to act. You can also name co-agents who must act together, though this can slow things down if they disagree. Most people choose one primary agent and one or two backups.

Frequently Asked Questions

Can I sign a power of attorney if I am on medication or have memory problems?

You can sign a power of attorney as long as you understand what you are signing and what authority you are giving away. Memory problems do not automatically disqualify you. However, if you have been diagnosed with dementia or a condition that affects your judgment, a court might later question whether you were mentally able to sign. If this is a concern, have a doctor write a note saying you understood the document when you signed it.

What if I change my mind after I sign?

You can revoke a power of attorney at any time while you are mentally able to do so. Sign a written revocation, have it notarized if your state requires it, and give copies to your agent, your bank, your doctor, and anyone else who has the original document. Your agent must stop acting on your behalf once they receive the revocation.

Does my agent have to tell me what they are doing with my money?

Your agent is legally required to act in your best interest and keep records of their actions. They should be willing to show you bank statements, receipts, and an accounting of what they have done. If your agent refuses to explain their actions or you suspect they are stealing from you, you can revoke the power of attorney and consult a lawyer about suing them.

What happens to my power of attorney when I die?

A power of attorney ends automatically when you die. Your agent has no authority over your estate after that point. Your will or your state's laws determine who handles your property and finances after death — usually an executor named in your will or a court-appointed administrator.

Do I need a lawyer to sign a power of attorney?

You do not need a lawyer, but having one review the document can prevent problems later. A lawyer can make sure the document meets your state's requirements, covers the decisions you actually want your agent to make, and is worded clearly enough that banks and hospitals will accept it. If your finances or medical situation is complicated, a lawyer's help is worth the cost.