Power of attorney: types, signing rules and costs
A power of attorney lets someone you trust handle your money or your medical decisions if you cannot. Here are the types, how to sign one in your state, what your agent may and may not do, and what it costs.
Key facts
- A power of attorney names an agent to act for you, the principal. Financial and medical decisions usually need separate documents.
- A durable power of attorney keeps working if you become incapacitated, which is when most families need it.
- Every power of attorney ends when you die. Your executor or successor trustee takes over from there.
- Signing rules vary: California accepts a notary or two witnesses, while Florida and New York require both.
- Without one, your family may have to ask a court for a conservatorship or guardianship to manage your affairs.
How a power of attorney works
A power of attorney is a signed document in which you, the principal, give another person, your agent or attorney-in-fact, authority to act for you. The agent does not need to be a lawyer. Most people choose a spouse, an adult child or a trusted friend, and name a backup.
A financial power of attorney covers money and property: paying bills, managing bank and investment accounts, filing taxes, dealing with real estate and government benefits. A health care power of attorney names someone to make medical decisions when you cannot. Many states use separate documents for each. New York’s statutory power of attorney form, for example, cannot be used for health care decisions, which need a separate health care proxy.
Types of power of attorney
| Type | What it does | When it ends |
|---|---|---|
| General | Broad authority over your finances | At your incapacity unless it is also durable, and at death |
| Limited, or special | Authority for specific acts, such as selling one property or signing at a closing | When the task is done or on the date it sets |
| Durable | Stays in effect if you become incapacitated | At death or when you revoke it |
| Springing | Takes effect only on a future event, usually your incapacity | At death or when you revoke it |
| Health care | Names someone to make medical decisions when you cannot | At death or when you revoke it |
A general power that is not durable stops working exactly when most families need it, so estate plans use a durable one.
Springing powers need proof that the triggering event happened. Under the Uniform Power of Attorney Act, when the trigger is incapacity and the document does not name someone else to decide, a physician or licensed psychologist must confirm it in writing, a step that can cause delays when your agent needs to act quickly. Florida does not allow new springing powers of attorney at all, apart from narrow exceptions.
Health care documents come in two kinds. A health care power of attorney, sometimes called a health care proxy, names your decision-maker. A living will states your treatment wishes. Many states combine both in an advance directive, such as California’s Advance Health Care Directive. The National Institute on Aging notes that a lawyer can help but is not required, and that many states offer free forms.
Durable or not: the state rules
In most of the more than 30 states that have adopted the Uniform Power of Attorney Act, and in some others such as New York, a power of attorney is durable unless it says otherwise. Elsewhere it must say so in writing. California, Florida and Texas, for example, require durability wording such as: “This power of attorney shall not be affected by subsequent incapacity of the principal.” If you use your state’s statutory form, the wording is already in it.
How to make one, step by step
- Choose your agent and a backup. Pick someone honest, organized and willing. Naming two agents who must act together can slow things down, so many people name one agent and a successor.
- Decide what the agent can do. Most people grant broad financial powers. Some powers, such as making gifts, changing beneficiary designations or creating and amending trusts, generally have to be granted expressly.
- Use your state’s form if it has one. California, New York and Texas all publish statutory forms, which banks are used to seeing. In New York, any power of attorney must include the statutory form’s caution to the principal and information for the agent in substantially the same words.
- Sign it the way your state requires, before a notary and, in some states, witnesses. See the table below.
- Give copies to your agent and to the banks and brokers you use. If your agent may need to sell or mortgage real estate, the power of attorney may also have to be recorded with the county.
- Make a health care directive too, since a financial power of attorney usually does not cover medical decisions.
- Review it after a marriage, a divorce, a move to another state or a falling-out with your agent.
Signing rules in four large states
| State | How to sign | Worth knowing |
|---|---|---|
| California | Dated and signed, then either notarized or signed by two adult witnesses. Your agent cannot be a witness | Must include durability wording to survive your incapacity. The courts link a free statutory form |
| Florida | Signed by you and two witnesses, and notarized | Your agent must be at least 18, or a qualified financial institution. No new springing powers |
| New York | Notarized and signed by two witnesses, who cannot be your agents or receive gifts under it; the notary can be one of them. Your agent also signs before a notary | Printed in at least 12-point type, and must include the statutory form’s caution to the principal and information for the agent in substantially the same words. Not for health care decisions |
| Texas | Signed and acknowledged before a notary | The statutory form lets you initial 14 categories of powers, or one line for all, and choose whether it starts now or at incapacity. Not for health care decisions |
In states that follow the Uniform Power of Attorney Act, a power of attorney signed before a notary is presumed genuine, which makes it much easier to use. Have yours notarized even where the law does not strictly require it.
What your agent must do
Under the Uniform Power of Attorney Act, an agent must always act in good faith, only within the authority you granted, and according to your reasonable expectations, or otherwise in your best interest. Unless the document says otherwise, the agent must also be loyal to you, avoid conflicts of interest, act with care and diligence, keep a record of all receipts, payments and transactions, and try to preserve your estate plan.
The Consumer Financial Protection Bureau sums up an agent’s job in four rules: act only in your best interest, manage your money and property carefully, keep it separate from their own, and keep good records.
Will the bank accept it?
Banks sometimes hesitate over a power of attorney, especially an old one. Many states push back:
- Uniform Act states. A bank that accepts a notarized power of attorney in good faith is protected. It can ask for the agent’s certification, a translation or a lawyer’s opinion. In most of these states, a bank must accept a statutory-form power, or in some states any notarized power, or ask for those documents within 7 business days, then accept within 5 business days of receiving them. Texas allows 10 business days to ask for a certification or a lawyer’s opinion, then 7 business days to accept. A court can order acceptance and award attorney’s fees.
- New York. For a power of attorney on the statutory short form, a bank must honor it, reject it in writing with its reasons, or ask for an affidavit within 10 business days, and can face damages and fees for an unreasonable refusal. The law does not require banks to accept other forms.
A practical step: give your bank a copy while you are well, and ask whether it needs anything else.
Changing, revoking and when it ends
You can revoke a power of attorney at any time while you have capacity. Use the method the document states, or sign and date a written revocation and deliver it to your agent. Then tell every bank and institution that has a copy, and record the revocation wherever the power of attorney was recorded. A bank that acts in good faith without knowing about the revocation is protected, so the notice matters.
Signing a new power of attorney does not automatically cancel an old one in New York or in states that follow the Uniform Act. Include a sentence revoking earlier powers, or revoke them separately.
A power of attorney also ends:
- at your death, when your executor or successor trustee takes over;
- at your incapacity, if it is not durable;
- when its purpose is accomplished or the end date it sets arrives;
- when your agent dies, resigns or cannot act, and no backup is named;
- for a spouse acting as your agent, on divorce, unless the document says otherwise. In Uniform Act states, filing for divorce is enough.
What happens without one
If you lose capacity without a durable power of attorney, your family may need to ask a court to appoint a conservator or guardian. It takes time and money, the court supervises it, and the judge, not you, chooses who serves. California’s courts describe conservatorship as a step taken only if less restrictive options will not work, and Texas law lists durable and medical powers of attorney as alternatives to guardianship.
A living trust covers property held in the trust, but not retirement accounts, tax returns or government benefits. That is why most estate plans pair the trust with a durable power of attorney.
What it costs
| Option | Typical cost |
|---|---|
| Free state or court form | $0, plus the notary fee, about $15 in California |
| Online service | Often included in will and trust packages; see online services compared |
| Estate planning attorney | About $150 to $450 for a power of attorney, and $300 to $600 for a health care directive |
Attorney figures are from FindLaw. LegalZoom puts the typical cost of a power of attorney at $100 to $400. A lawyer is most useful when you own a business, hold property in several states, or want to limit or expand your agent’s powers in unusual ways.
Get it done with your will or trust
Most online will and trust packages include a durable power of attorney and a health care directive. Compare prices and what each includes.
Compare online servicesFAQ
Does a power of attorney work after death?
No. Every power of attorney ends when the principal dies. From then on, the executor named in the will, or the successor trustee for trust property, handles the estate.
Can my agent change my will?
No. Only you can make or change your will. Under the Uniform Act, an agent can change your beneficiary designations or trusts only if the power of attorney expressly allows it.
Do I need a power of attorney if I have a living trust?
Yes. Your successor trustee can only manage property in the trust. A durable power of attorney covers everything else, such as retirement accounts, tax returns, insurance claims and benefits.
Can I name more than one agent?
Yes. You can name co-agents, but requiring them to act together can slow things down, and disagreements can stall decisions. Many people name one agent and one or two successors.
Is my power of attorney still valid if I move to another state?
Generally yes. States that follow the Uniform Act accept a power of attorney that was valid where it was signed. Banks may still prefer their own state’s form, so review it after a move.
Do I need a lawyer to make one?
No. Many states publish free statutory forms, and online services include them. A lawyer helps when your finances or family are complex.
Sources
- Texas State Law Library: Powers of attorney
- California Courts: Options to help someone with an impairment or disability, Legal documents and Conservatorships
- Uniform Power of Attorney Act as enacted in West Virginia: §104 (durable by default), §109 (springing powers), §110 (termination), §114 (agent’s duties), §119 and §120 (acceptance)
- New Hampshire RSA 564-E:104, Vermont Act 60 of 2023 and Virginia Code §64.2-1618
- Adoption of the Uniform Act: Michigan House Fiscal Agency bill analysis (2023) and National Law Review (July 2024)
- New York General Obligations Law §5-1501A (durability), §5-1501B (execution), §5-1504 (acceptance), §5-1511 (revocation) and §5-1513 (statutory form)
- Florida Statutes §709.2105 (execution) and §709.2108 (when effective)
- California Probate Code §4121, §4122 and §4124
- Texas Estates Code §751.0021, §751.201 (acceptance), §752.051 (statutory form) and §1002.0015 (alternatives to guardianship)
- National Institute on Aging: Advance directives for health care
- Consumer Financial Protection Bureau: Help for agents under a power of attorney
- FindLaw: What does an average estate plan cost? (November 2025)
- LegalZoom: Estate planning cost (January 2026)
OakTrust.com provides general information, not legal advice. Power of attorney rules, forms and signing requirements vary by state. For advice on your situation, talk to an attorney licensed in your state.