How a power of attorney works
You, the principal, sign a document naming an agent and describing what that person may do: pay bills, manage bank and investment accounts, file taxes, buy or sell property, deal with insurers. The agent does not need to be a lawyer. Signing requirements are set by state law, and many states presume a signature is genuine if it was acknowledged before a notary, which banks and land records offices usually expect in practice.
Signing does not take away your own authority. While you can still make decisions, you keep managing your affairs and can revoke the document at any time. Its real value comes later, if dementia, a stroke or an accident leaves you unable to act. Without one, your family may have to ask a court to appoint a guardian or conservator, a slower, costlier and public process.
An agent is a Fiduciary, legally bound to put your interests first. The Consumer Financial Protection Bureau’s guide for agents boils the role down to four duties.
- Act only in the principal’s best interest, following the document and the principal’s known wishes.
- Manage the principal’s money and property carefully.
- Keep the principal’s money separate from the agent’s own.
- Keep good records of every decision and transaction.
Types of power of attorney
Powers of attorney are described along three separate lines, and one document can combine them, such as a durable general power of attorney that takes effect immediately.
Scope. A general power of attorney covers a broad range of financial matters. A limited or special power of attorney covers one task, such as selling a house while you are overseas, and ends when that task is done.
Durability. A durable power of attorney survives your incapacity; a non-durable one ends exactly when it would be most needed. In states that have adopted the Uniform Power of Attorney Act, a power of attorney is durable unless it expressly says otherwise. Elsewhere, the document may need specific durability language.
Timing. Most take effect as soon as they are signed. A springing power of attorney takes effect only on a future event, usually your incapacity, and often requires a written determination by physicians or another person named in the document. That extra step can delay an agent just when bills are due.
A health care power of attorney, sometimes called a health care proxy, is a separate document naming someone to make medical decisions. It is distinct from a living will, which records your treatment wishes rather than naming a decision maker.
What an agent cannot do
An agent’s authority is limited to what the document and state law allow, and banks and other third parties are entitled to check the document before acting on it. A power of attorney is for managing a living person’s affairs, not for rewriting their plans, and generic forms often leave out the express grants that some powers require. The limits below are the ones that most often surprise families in retirement and estate planning.
- Act after death. The authority ends when the principal dies; from then on, only the executor or administrator appointed in Probate can act for the estate.
- Manage Social Security or VA benefits. Those require a separate appointment as a representative payee or VA fiduciary.
- Make gifts, change a beneficiary designation, create or change a Trust or alter survivorship rights, in Uniform Act states, unless the document expressly grants that power.
- Write or change the principal’s Will. Only the principal can do that.
- Represent the principal before the IRS unless the document meets IRS requirements; the IRS records it in its authorization file only with a completed Form 2848 attached.
- Use the principal’s money for the agent’s own benefit, unless the document allows it.
How to set up a power of attorney
The agent will have access to everything you own, so trust matters more than financial skill; an agent can hire an accountant but cannot be made honest. Before signing, talk through your wishes, including how you want care paid for if you need long-term care, what regular gifts you make and who should see your records.
Timing matters most. The document must be signed while you clearly have capacity, so the conversation with an aging parent is best held early, before any diagnosis makes the signature open to challenge.
- Choose an agent and at least one successor agent in case your first choice dies, resigns or cannot serve.
- If you name co-agents, say whether each can act alone; requiring joint decisions can stall routine bill paying.
- Decide the scope, including any power to make gifts or change beneficiaries, confirm the document is durable and choose whether it takes effect now or springs later.
- Sign under your state’s rules, usually before a notary, and give copies to your agent and your financial institutions. Some state laws require banks to accept a valid document rather than insist on their own form.
- Review it after a move, marriage or divorce; in many states a divorce ends a former spouse’s authority as agent automatically.
At a glance
Power of attorney agent vs. other people who manage someone else’s money
| Role | Who appoints them | What they control | When |
|---|---|---|---|
| Agent under a power of attorney | You, in the document | What the document and state law allow | From signing or a set event until your death or revocation |
| Successor trustee of a revocable living trust | You, in the trust | Only assets titled in the trust | When you can no longer serve, and after death |
| Guardian or conservator | A court | What the court order allows | After a court finds you incapacitated |
| Representative payee or VA fiduciary | Social Security or the VA | Only those government benefits | While you need help managing them |
| Executor or administrator | Named in your will and confirmed by the probate court, or appointed by the court | Your probate estate | Only after death |
Put it in your plan
POA in MoneyWhatIf
MoneyWhatIf cannot grant legal authority, but it can help the person you trust understand your finances. Profile sharing gives a named person Can view or Can edit access to the household’s finances and every plan on the profile, and a single plan can be shared read-only. The long-term care setting models a care spell for each person, with a start age, a duration, a monthly cost and any insurance benefits, the kind of period when an agent is likely to be paying the bills.
Open your forecastCommon questions
POA FAQs
Does a power of attorney end at death?
Yes. Every power of attorney, durable or not, ends when the principal dies, even if the agent could easily pay a remaining bill. From that point, only the executor named in the will, or an administrator appointed by the probate court, can act for the estate. The agent should promptly tell the banks and businesses they dealt with, and assets in a revocable living trust pass to the successor trustee instead.
Can you get power of attorney for someone with dementia?
Only if the person can still understand what they are signing. A diagnosis alone does not rule it out, especially early on, but a document signed when capacity was doubtful can be challenged, so a doctor’s note from around the signing helps. Once the person can no longer understand the document, it is too late, and the family usually has to ask a court to appoint a guardian or conservator.
What are the risks of giving someone power of attorney?
The main risk is misuse: an agent with broad powers can move money with little oversight until someone notices. You can limit it by choosing carefully, naming a successor, asking the agent to share records with a third person and leaving out gifting powers you do not want. The other risks are practical: a bank may question an old or unfamiliar form, and a springing power can stall while incapacity is certified.
How do I revoke a power of attorney?
While you still have capacity, you can revoke it at any time, usually by signing a written revocation, giving a copy to the agent and notifying every bank, brokerage or other institution that has the old document. Signing a new power of attorney may or may not revoke earlier ones, depending on its wording and state law, so the new document should say so explicitly.