An attorney-in-fact is the person named in a power of attorney to act on someone else’s behalf. The person granting the authority is the principal; the attorney-in-fact (also called the agent) can only do what the document specifically allows. The title has nothing to do with being a lawyer. It is a legal role, and it carries the highest standard of responsibility one person can owe another.
The scope of an attorney-in-fact’s authority, when it starts, how long it lasts, and what happens if they misuse it all depend on how the power of attorney is written and which state’s law governs it. Understanding the role means understanding four things: the type of document that creates it, who qualifies, the duties the law imposes, and how the authority ends.
What Authority an Attorney-in-Fact Actually Has
An attorney-in-fact’s power comes entirely from the document. Read the document, and you know what the agent can do. The type of power of attorney determines when that authority activates and what it covers.
Durable and Non-Durable
A durable power of attorney stays in effect even if the principal becomes mentally incapacitated. A non-durable power of attorney ends the moment the principal loses the ability to make decisions. Since most people create a power of attorney precisely to prepare for possible incapacity, the durable version is usually the point of the exercise. The document must include specific language stating it survives incapacity; without that language, many states default to treating it as non-durable.
Springing
A springing power of attorney does not give the attorney-in-fact any authority until a triggering event occurs, typically the principal’s incapacity as certified by a physician. The appeal is that the agent has no power until it is actually needed. The practical problem is proof: a doctor has to certify incapacity, financial institutions have to review the certification, and disputes about whether the trigger has been met can stall access to accounts at the worst possible moment. Many estate planning attorneys now recommend an immediately effective durable document with a trusted agent instead.
General and Limited
A general power of attorney gives the attorney-in-fact broad authority over the principal’s financial affairs: banking, investments, tax filings, property transactions. A limited (or special) power of attorney authorizes only one task, such as signing closing documents on a specific real estate sale or managing a single bank account during a period of travel. Once the task is complete or the stated deadline passes, the limited authority expires.
Healthcare
Financial powers of attorney do not cover medical decisions. Healthcare authority requires a separate healthcare power of attorney, sometimes called a healthcare proxy, which authorizes the agent to make medical decisions when the principal cannot. A person who holds a healthcare power of attorney is treated under federal privacy law as the patient’s personal representative and has the same right to access the patient’s health information that the patient would have, including mental health records.1U.S. Department of Health & Human Services. Does Having a Health Care Power of Attorney Allow Access to Patients Medical Mental Health Records Under HIPAA Some providers still ask for a separate privacy authorization, so including explicit language about medical record access in the document itself can speed things along.
Who Can Serve as an Attorney-in-Fact
The legal requirements are minimal. The only universal statutory requirement is that the person be a legal adult who is not incapacitated. There is no licensing exam, no background check, no professional credential. A principal can name a family member, a friend, a neighbor, or a professional fiduciary.
Because the bar is so low, the principal’s judgment does almost all the work. The qualities that matter in practice are trustworthiness, financial competence, and availability. A family member who lives nearby and manages their own finances responsibly is often a stronger choice than a distant relative with more financial sophistication. A history of personal financial trouble or strained family relationships can create serious problems, even where nothing legally prevents the appointment. Financial advisors are sometimes named as attorneys-in-fact, though many investment firms prohibit their employees from serving because of conflict-of-interest policies.
Professional fiduciaries and corporate trustees, including banks with trust departments, can serve as attorneys-in-fact for principals who lack a suitable individual or have complex estates. They bring expertise and institutional accountability, and they charge for it, typically on an hourly or asset-percentage basis. A corporate trustee will not move away, become ill, or develop a spending problem. It also will not visit anyone in the hospital or understand personal preferences the way a family member would.
Fiduciary Duties
An attorney-in-fact is a fiduciary. That imposes the highest standard of legal obligation one person can owe another, and courts enforce it. At least 31 states have adopted some version of the Uniform Power of Attorney Act, which codifies these duties in substantially similar terms across jurisdictions.
Loyalty
The duty of loyalty requires the attorney-in-fact to act solely in the principal’s interest. Self-dealing, meaning use of the principal’s money or property for the agent’s personal benefit, is prohibited unless the power of attorney explicitly allows it. Even where a document grants broad authority, courts look skeptically at any transaction where the agent stands to benefit.
Care
The duty of care requires the attorney-in-fact to handle the principal’s affairs with the competence and diligence a reasonable person would use in similar circumstances. If the principal chose the agent for a specific professional skill, such as accounting or investment management, the agent is held to the higher standard that skill implies. An agent who acts in good faith and with reasonable care is generally not liable if the principal’s investments lose value.
Good Faith and Staying Within Scope
The attorney-in-fact must act honestly and within the scope of authority the document grants. An agent authorized to manage bank accounts cannot start selling the principal’s real estate unless the document also covers property transactions. Acting outside the granted authority exposes the agent to personal liability and can void the transaction entirely.
Recordkeeping
An attorney-in-fact is required to keep detailed records of every financial transaction they conduct on the principal’s behalf. That means documentation of all receipts, disbursements, and account activity. In practice: keep every bank statement, every receipt, and a running log of what was spent, why, and on whose behalf. If a family member, a court, or a government agency later asks for an accounting, the agent needs to produce it. Sloppy records are the fastest way to turn an honest agent into a defendant.
Keeping Assets Separate
Commingling the principal’s money with the agent’s personal funds is a serious violation of fiduciary duty, even when the agent intends to pay it all back. The principal’s assets must stay in accounts titled in the principal’s name or clearly designated as belonging to the principal. Depositing the principal’s Social Security check into the agent’s own account “for convenience” is exactly the pattern that triggers investigations and lawsuits.
What a Breach Costs
An attorney-in-fact who violates fiduciary duties faces civil and criminal exposure. On the civil side, the principal (or their guardian, heirs, or other interested parties) can sue to recover misappropriated funds, remove the agent, and obtain a court-supervised accounting. On the criminal side, misuse of a power of attorney often falls under state financial exploitation or elder abuse statutes, which can carry felony charges with prison time. The severity of the penalty typically scales with the dollar amount involved and the vulnerability of the principal.
What the Document Needs to Say
The strength of an attorney-in-fact’s authority in the real world depends on how clearly the document is written. Banks, title companies, and hospital administrators need to look at the page and know exactly what the agent can do.
Identification
The document must include the attorney-in-fact’s full legal name and enough identifying information for third parties to confirm the person presenting the document is the authorized agent. A residential address and date of birth are standard. Any mismatch between the name on the power of attorney and the name on the agent’s identification can cause an institution to reject the document, so consistency matters. If the agent commonly uses a different name than their legal name, include both.
Scope
The most important drafting decision is defining what the agent can and cannot do. A general grant might cover banking, investments, real estate, tax matters, and government benefits. A limited grant might authorize only the sale of a specific property. Listing specific account numbers, property addresses, or retirement fund identifiers gives the agent a clear roadmap and reduces the chance that a third party will refuse to act. Vague language like “handle my financial affairs” invites disputes.
Compensation
Most states allow an attorney-in-fact to receive reasonable compensation for their time unless the power of attorney says otherwise. If the principal wants the agent to serve without pay, the document should say so explicitly. If the principal wants a specific rate or cap, that belongs in the document too. Leaving compensation unaddressed invites disagreements later, especially among family members. Agents are also generally entitled to reimbursement for out-of-pocket expenses incurred while carrying out their duties, such as travel costs, filing fees, and postage.
Signing, Notarization, and Delivery
A power of attorney that is not properly signed and witnessed is just paper. The principal must sign the document (or direct someone to sign on their behalf while they are present). Most states require the signature to be notarized, meaning the principal signs before a notary public who verifies identity and confirms voluntary signing. Some states require witnesses in addition to or instead of notarization, and witnesses generally cannot be the named agent. Where notarization is required, fees typically run between $2 and $25 per signature. Getting both notarization and witnesses, even when the state only requires one, adds a layer of protection against later challenges.
After execution, the attorney-in-fact needs a copy and should formally accept the role. Acceptance can be implied by beginning to act under the document, but a written acknowledgment is better practice. Copies should also go in advance to every institution the agent might need to deal with: banks, brokerage firms, insurance companies, and healthcare providers. The original should be stored securely, in a fireproof location or with an attorney, where the agent can reach it when needed.
When Institutions Push Back
Banks and other financial institutions sometimes refuse to accept a power of attorney, particularly if the document is several years old, uses unfamiliar formatting, or grants unusually broad authority. In states that have adopted the Uniform Power of Attorney Act, an institution that unreasonably refuses to accept a properly executed power of attorney can be ordered by a court to accept it and held liable for the agent’s attorney fees and costs incurred in forcing the issue. Institutions are allowed to refuse if they have a genuine, good-faith belief that the principal is being exploited, but a blanket policy of rejecting any document not drafted on the bank’s own form is not a valid reason.
An institution that receives a power of attorney may reasonably request an agent’s affidavit, an English translation of a foreign-language document, or a legal opinion confirming validity. What it cannot do is sit on the document indefinitely. Keeping a certified copy of the power of attorney and current government-issued ID ready reduces friction during these encounters.
Co-Agents and Successor Agents
A principal can name more than one attorney-in-fact, either to act at the same time or to step in if the first is unavailable.
Co-agents share authority simultaneously. Unless the document specifically says they can act independently, most states require co-agents to agree on every decision. That can be a safeguard, and it can also mean two siblings who cannot agree on whether to sell their mother’s house paralyze the whole arrangement. If independent action is what the principal wants, the document must say so in plain terms.
A successor agent is a backup who steps in only after all previously named agents have died, resigned, become incapacitated, or declined to serve. The successor receives the same authority as the original unless the document limits it. Naming at least one successor is strongly recommended. A power of attorney with a single agent and no backup becomes useless if that agent can no longer serve, and if the principal has already lost capacity, they can no longer execute a replacement.
An attorney-in-fact is generally not liable for the actions of another agent, including a predecessor, as long as they do not participate in or help conceal a breach. But an agent who becomes aware that a co-agent or predecessor is mishandling the principal’s affairs has an obligation to act. If the principal still has capacity, that means notifying the principal. If the principal is incapacitated, the agent must take reasonable steps to protect the principal’s interests, which may include contacting an attorney or filing a report with a protective services agency.
How the Role Ends
An attorney-in-fact’s authority is not permanent. It ends in several ways.
A principal who still has mental capacity can revoke a power of attorney at any time. The most reliable method is to execute a new document that explicitly revokes all prior powers of attorney, or to sign a standalone revocation form. The revocation must be communicated to the agent directly, and notice should also go to every institution that received a copy of the original document. A revocation the agent never learns about is practically unenforceable: if a bank does not know the document has been cancelled, it will keep honoring the agent’s instructions. Where there is any question about the principal’s mental capacity at the time of revocation, a written physician certification of capacity strengthens the revocation against future challenges.2Administration for Community Living. POA Revocations 101 Tip Sheet
Some terminations happen automatically. Every power of attorney ends immediately when the principal dies, and any use of the document after death is unauthorized. In some states, divorce automatically revokes a power of attorney naming the former spouse as agent, though this varies by jurisdiction. The document itself may also include an expiration date or a termination event, such as completion of a specific transaction.
When the principal has lost capacity and the attorney-in-fact is suspected of misconduct, voluntary revocation is no longer possible. An interested party, typically a family member, can petition the court to appoint a guardian or conservator. A court-appointed guardian can override and revoke the power of attorney, remove the agent, and pursue legal action to recover misappropriated funds. The process is adversarial, expensive, and slow, which is why getting the choice of attorney-in-fact right at the start matters as much as it does.