A power of attorney is a legal document that lets you give someone else the right to make decisions or handle money on your behalf

When you sign a power of attorney, you are naming another person—called an agent or attorney-in-fact—to act for you. That person can then sign documents, pay bills, sell property, or make medical choices using your authority. You remain in control: you decide exactly what powers the agent gets, when those powers start, and when they end. The agent is legally required to act in your best interest, not their own.

A power of attorney is not the same as a will. A will only takes effect after you die. A power of attorney works while you are alive and can end whenever you choose—or automatically when you die. It is also different from guardianship: a court does not have to appoint a guardian if you have already named an agent in a power of attorney document.

Key Takeaways

  • A power of attorney names someone to make financial, legal, or medical decisions on your behalf while you are still alive.
  • You decide exactly which powers your agent receives—they might handle only bill payments, or they might manage all your finances and property.
  • A durable power of attorney stays in effect even if you become unable to make decisions yourself, which is why most people use this type.
  • Your agent must act in your interest, keep your money separate from theirs, and account for what they spend on your behalf.
  • You can revoke a power of attorney at any time as long as you are mentally capable of understanding what you are doing.

The three main types and what each one covers

A financial power of attorney gives your agent control over money and property. They can pay bills, deposit checks, sell a house, manage investments, or file taxes—depending on what you authorize. This is the type most people use if they worry about becoming unable to handle finances later.

A healthcare power of attorney (sometimes called a healthcare proxy or medical power of attorney) lets your agent make medical decisions if you cannot. They can consent to surgery, choose a nursing home, or decide whether to continue life support. This is separate from a living will, which states your own wishes about end-of-life care.

A general power of attorney covers both finances and healthcare, giving one person broad authority over your life. Some people use a general power of attorney; others name different agents for different areas because they trust one person with money but another with medical choices.

Durable versus non-durable: why the word "durable" matters

A durable power of attorney stays in effect if you become mentally unable to make decisions. This is the type nearly everyone should use, because the whole point of a power of attorney is usually to have someone ready to act if you cannot. Without the "durable" language, the power of attorney automatically ends the moment you lose mental capacity—exactly when you need it most.

A non-durable power of attorney ends if you become incapacitated. It is rarely used except in specific situations, such as when you need someone to handle a single transaction while you are traveling and cannot be reached.

The word "durable" must appear in the document itself. State law varies on the exact language required, but the document should say something like "This power of attorney shall not be affected by my subsequent incapacity" or "This is a durable power of attorney." If the language is missing or unclear, a bank or hospital may refuse to honor it.

What your agent can and cannot do

Your agent can only do what the document says they can do. If you write that they can pay bills and manage your bank account, they cannot sell your house unless you add that power later. If you do not mention healthcare decisions, they have no authority over medical choices. This is why the document needs to be specific: vague language often means banks and hospitals will not accept it.

Your agent cannot change your will, make gifts to themselves (except reasonable gifts in some states), or use your money for their own benefit. They must keep your money separate from theirs, save receipts, and be ready to show you—or a court—how they spent your money. If they break these rules, you can sue them, and so can your heirs after you die.

Your agent also cannot act after you die. Once you pass away, the power of attorney is worthless. Your will and your estate take over, and your agent has no more authority. This is why some people name an executor in their will (the person who carries out the will) and a separate agent in their power of attorney (the person who acts while they are alive).

When you might need a power of attorney

You might want a power of attorney if you are facing surgery or a hospital stay and want someone to handle bills while you recover. You might want one if you are getting older and worry about declining health. You might want one if you travel frequently and need someone to manage finances at home. You might want one if you own a business and need a backup to sign documents if you are unavailable.

Some people create a power of attorney as part of their overall estate plan, alongside a will and a living will. Others create one only when a specific need arises. There is no rule about when you must have one—it is a choice you make based on your situation.

How to create a power of attorney

You can buy a blank power of attorney form online or from an office supply store, fill it out yourself, and have it notarized. Many states do not require a lawyer. However, a lawyer can make sure the document says exactly what you want and follows your state's rules, which vary. Some states require specific language; others require witnesses in addition to a notary.

The document must be signed by you (the person giving the power) while you are mentally capable and not under pressure. Most states require a notary public to witness your signature. Some states also require one or two other witnesses. Check your state's requirements before you sign, because a document that does not follow state law may not be accepted by banks or hospitals.

Once it is signed and notarized, you can give copies to your agent, your bank, your doctor, and anyone else who might need to see it. You do not have to file it with a court or government office unless your state requires it for a specific type of power of attorney.

How to revoke or change a power of attorney

You can revoke a power of attorney at any time as long as you are mentally capable of understanding what you are doing. You do not need a lawyer or a court order. You can straightforward write a letter saying you revoke the power of attorney, sign it, have it notarized, and give copies to your agent and anyone else who has a copy of the original document.

If you want to change what powers your agent has—for example, to add the right to sell property—you can either revoke the old document and create a new one, or you can create an amendment (sometimes called a codicil). An amendment is simpler if you are only changing one or two things, but a new document is clearer if you are making major changes.

Tell your agent and your bank or healthcare provider that you have revoked the power of attorney. Some people keep old copies of a revoked power of attorney in their files to show that it was intentional, in case a question comes up later.

Frequently Asked Questions

Does my agent have to be a family member?

No. Your agent can be anyone you trust—a friend, a business partner, a professional fiduciary, or a family member. Some people name a bank or trust company as their agent. The only requirement is that the person must be willing to take on the responsibility and must be at least 18 years old in most states.

What happens if my agent dies or becomes unable to act?

The power of attorney ends. You can name a backup agent (called a successor agent) in the original document so that if your first choice dies or cannot serve, the second person automatically takes over. If you do not name a successor and your agent dies, you will need to create a new power of attorney with a new agent.

Can I have more than one agent?

Yes. You can name two or more agents to act together, or you can name them to act separately (so each one can act alone without the other's permission). Acting together is safer because it requires agreement, but it is slower. Acting separately is faster but riskier if the agents disagree or one acts against your interest.

Does my power of attorney work in another state?

Most states honor a power of attorney signed in another state, but some banks and hospitals may ask for a copy certified by the state where it was signed. A few states have their own required forms. If you move or spend a lot of time in another state, ask a lawyer in that state whether your document will be accepted or whether you need a second one.

What is the difference between a power of attorney and a living will?

A power of attorney names someone to make decisions for you. A living will states your own wishes about end-of-life care—for example, whether you want life support if you are terminally ill. You can have both. The living will tells your agent what you want; the power of attorney gives them the authority to carry out those wishes.