Fiduciary Duties and Standards for Power of Attorney Agents

If you’ve agreed to serve as someone’s power of attorney agent, you’ve taken on a fiduciary role, and the fiduciary duties of a power of attorney agent require you to put the principal’s interests ahead of your own in every decision, act in good faith, stay inside the authority the document grants, and keep careful records of everything you do with their money or property. The Uniform Power of Attorney Act, adopted in more than 30 states, sets the baseline for these obligations and splits them into duties you can never waive and defaults that apply unless the document says otherwise.¹ Even in states that haven’t adopted the act, common law imposes similar standards on anyone who agrees to serve.

The Three Duties You Can Never Waive

No matter how the power of attorney document is drafted, three obligations always apply. You must act in line with the principal’s reasonable expectations when you know them, and in the principal’s best interest when you don’t. You must act in good faith. And you must act only within the scope of the authority the document actually grants.¹ A document that tried to let an agent act in bad faith or ignore the principal’s known wishes would be unenforceable on that point.

Everything else sits on top of those three floors.

Default Duties the Document Can Modify

The uniform act layers six additional duties on top of the mandatory floors. These apply unless the power of attorney document specifically relaxes them:

Loyalty: act for the principal’s benefit, not your own.
Impartiality: avoid conflicts of interest that compromise your judgment.
Care: use the care, competence, and diligence that agents in similar circumstances would use.
Recordkeeping: track every receipt, disbursement, and transaction.
Cooperation: work with anyone who has authority to make health-care decisions for the principal.
Estate plan preservation: try to keep the principal’s existing estate plan intact when doing so serves their interest.¹

A principal can draft a document that relaxes any of these. A common example: waiving the recordkeeping requirement for a trusted family member. Even then, that family member still has to act in good faith, follow known wishes, and stay inside the granted authority. Those don’t go away.

Loyalty and the Self-Dealing Problem

Loyalty is the duty agents violate most often, and the one courts scrutinize most closely. Every action you take with the principal’s money or property has to benefit the principal, not you.

Under the uniform act, an agent who is not the principal’s ancestor, spouse, or descendant cannot transfer the principal’s assets to themselves — by gift, beneficiary designation, survivorship, or any other method — unless the document expressly allows it.¹ Close relatives aren’t off the hook either. The general duty of loyalty still constrains what a family-member agent can do for their own benefit.

When an agent enters a transaction that benefits them personally, courts presume it was improper. The burden shifts to the agent to prove by clear and convincing evidence that the deal was fair and the principal authorized it. Buying the principal’s property at a discount, redirecting investment income into a joint account, lending the principal’s money to yourself — all of these trigger the presumption. If you stand to gain from any decision you make, assume a court will later ask you to justify it, and document accordingly.

The consequences are steep. Courts can order disgorgement of profits plus restitution to restore the estate to where it would have been. Punitive damages are possible in egregious cases, and criminal prosecution for financial exploitation is on the table when the principal is elderly or incapacitated. Every state has an elder financial abuse statute of some kind.

The Standard of Care

Beyond loyalty, you have to bring reasonable skill to the role. The standard tracks the “prudent person” rule: act with the care, competence, and diligence that a similarly situated agent would use.¹ What matters is process, not outcome. If you research options, compare alternatives, and document your reasoning, you’ve met the standard even if the market moves against you the next day. Dumping savings into a speculative bet without analysis fails the standard even if the bet happens to pay off.

If you’re a licensed professional serving as agent — attorney, CPA, bank trust officer — the bar rises to the standard of your profession. Falling short can trigger malpractice liability on top of fiduciary breach claims.

Delegating and Getting Help

Being an agent doesn’t mean doing everything yourself. You can hire accountants, investment managers, attorneys, and other professionals to handle work that requires specialized knowledge. Delegation shifts your duty rather than eliminating it: you’re now responsible for selecting a qualified advisor, defining the scope of their work, and monitoring their performance. Do those three things and you generally won’t be liable for the advisor’s mistakes. Skip any of them and you own the result.

Agents who aren’t financial professionals should actively seek expert help for complex decisions — managing a stock portfolio, handling business interests, navigating the tax consequences of selling real estate. Refusing to get help when you’re out of your depth is itself a failure of care. Professional fees come out of the principal’s estate as a legitimate expense, so there’s no reason to wing it.

Keep the Principal’s Assets Separate from Your Own

One of the clearest lines in fiduciary law is the ban on commingling. Every dollar belonging to the principal has to sit in an account titled in the principal’s name, with you identified only in your representative capacity. A bank account should read something like “Jane Smith, by John Smith as Agent under Power of Attorney.” Never just your own name. Brokerage accounts, real estate titles, and any other property follow the same pattern.

Using the principal’s funds for your personal expenses is a violation even if you intend to pay it back the same week. Courts don’t weigh intent when assessing commingling. The act itself is the breach. Once funds are mixed, tracing which dollars belong to whom becomes nearly impossible, and that confusion is exactly what the rule exists to prevent. An agent who commingles can expect accounts to be frozen and may be removed entirely.

Separation also protects the principal from your personal legal exposure. If you face a lawsuit, divorce, or bankruptcy, clearly separated assets stay out of reach.

Recordkeeping and Giving an Accounting

The default rule requires you to keep a record of all receipts, disbursements, and transactions made on the principal’s behalf.¹ In practice: a running ledger of income and spending, retained receipts and bank statements, and the ability to produce a clear summary for any given period. The principal, a co-agent, a court-appointed guardian, or another authorized party can request these records.

When someone with standing asks for an accounting, you have 30 days to comply or to deliver a written explanation of why more time is needed, followed by an additional 30-day window to produce the records.¹ Stalling invites a court-ordered forensic audit, the cost of which may be charged to you if negligence or misconduct is found. Missing documentation creates a practical presumption of wrongdoing.

How Long to Keep Records

No single national rule tells individual agents how long to retain financial records. Federal regulations for institutional fiduciaries require keeping records for at least three years after the account terminates or any related litigation ends, whichever is later.² For an individual agent, erring on the long side is smarter. Tax audits can reach back three years, and six in certain situations. Family disputes often surface years after the principal dies. Five to seven years after your authority ends is a reasonable baseline.

Powers That Must Be Spelled Out

Not every authority can be read into broad language. The uniform act identifies a set of “hot powers” that an agent can only exercise if the document names them explicitly. These are the actions that can reshape a principal’s estate:

Making gifts of the principal’s property
Creating, amending, revoking, or terminating a living trust
Changing rights of survivorship on accounts or property
Changing beneficiary designations on insurance policies or retirement accounts
Delegating authority granted under the power of attorney to someone else
Waiving the principal’s right to survivor benefits under a retirement plan
Exercising fiduciary powers the principal could delegate
Disclaiming property or a power of appointment¹

A general grant — even one that says “my agent may handle all my financial affairs” — does not activate any of these. Each has to be named. This is where well-intentioned agents most often stumble. A daughter managing her father’s finances might assume she can continue his annual holiday gifts to grandchildren, but without express gifting authority, those gifts are unauthorized. If the document doesn’t address a hot power you need to use, your options are to go back to the principal for an amendment (if they still have capacity) or petition a court for authority.

Stay Inside the Document’s Terms

Hot powers aside, every document sets its own boundaries. Some grant broad financial authority. Others are narrow, authorizing you to sell a specific piece of real estate, manage a single bank account, or act only during a defined window. Your job is to read the document carefully and work strictly within those lines.

If the document forbids certain investments, you honor the restriction even when you think a different approach would do better. The principal’s autonomy controls. Actions outside the granted powers are void, meaning they carry no legal effect, and you’re personally liable for any resulting losses.

Ambiguity creates a trap. If a document grants the power to “manage investments” but says nothing about selling real estate, does selling a rental property to reinvest the proceeds qualify? It might. It might not. When the document is unclear, the safest route is a court petition for clarification. That costs money and time, and it’s still cheaper than a lawsuit after the fact.

When Your Authority Ends

A power of attorney is not permanent, and knowing when yours ends is part of staying inside the scope of your authority. Under the uniform act, it terminates when any of the following happens:

The principal dies
The principal revokes the document
The principal becomes incapacitated, if the document is not durable
The document’s stated purpose is accomplished
A termination provision in the document itself is triggered
The agent dies, becomes incapacitated, or resigns and no successor is named¹

The incapacity question trips people up more than anything else. Under the uniform act, a power of attorney is presumed durable — meaning it survives the principal’s incapacity — unless the document says otherwise. If your document is not durable, your authority vanishes the moment the principal loses capacity, which is often the moment the family thought the document was there to handle. Confirm the durability language before you need to rely on it.

Death is a hard stop. The instant the principal passes away, your authority ends. Any transaction completed after death — even one you started before — can be challenged by the estate. Authority over the principal’s assets then passes to the executor or personal representative, or to a court-appointed administrator if there’s no will. A principal with capacity can revoke the document at any time. Until you actually receive notice of the revocation, actions you take in good faith remain binding on the principal.

Compensation and Reimbursement

Unless the document addresses it, the default rule in states following the uniform act is that you’re entitled to reasonable compensation for your services and reimbursement of expenses reasonably incurred on the principal’s behalf. “Reasonable” is the operative word. Courts assess it by looking at the complexity of the work, time involved, your qualifications, and what professionals in the area would charge.

Many family-member agents serve without pay, but that’s a choice, not a legal requirement. If you’re spending real hours managing a parent’s finances, paying bills, coordinating with banks and attorneys, and handling tax filings, you can be compensated unless the document prohibits it. If you plan to pay yourself, document the hours and the tasks. An undocumented lump-sum payment to yourself is the kind of transaction that looks like self-dealing when a sibling later demands an accounting.

Legitimate out-of-pocket costs — travel to manage the principal’s property, professional fees, filing fees, postage — come out of the estate. Keep receipts. The recordkeeping duty that applies to the principal’s transactions applies equally to any money flowing to or through you.

What Happens If You Breach

Consequences range from uncomfortable to devastating depending on severity and intent. On the civil side, courts can remove you as agent, void unauthorized transactions, and order full restitution. Disgorgement of profits is standard: any money you made through self-dealing comes back with interest. Compensatory damages cover the gap between what the estate is worth and what it would have been under proper management. Punitive damages are possible in egregious cases.

Criminal exposure is real, especially where the principal is elderly or has diminished capacity. Every state has laws against financial exploitation of vulnerable adults, and prosecutors have grown more willing to pursue these cases. Your fiduciary status often serves as an aggravating factor, pushing charges into felony territory. A criminal conviction doesn’t replace the civil case; it runs alongside it.

Even agents who act in good faith can face expensive litigation if they didn’t keep records. When a family member challenges your handling of the principal’s finances, a clean ledger, organized receipts, and a clear explanation for every significant decision put you in a fundamentally different position than someone who kept nothing. Documentation isn’t only a legal requirement. It’s your best defense.

1
Uniform Law Commission. Uniform Power of Attorney Act (2006)
2
eCFR. 12 CFR 150.420 – How Long Must I Keep These Records