A power of attorney (POA) is a legal document that authorizes another person — called your “agent” or “attorney-in-fact” — to act on your behalf in specified matters. Most powers of attorney are about practical, day-to-day necessity: someone you trust who can sign checks, file taxes, pay bills, and handle finances when you can’t. A POA is one of the most overlooked but most important documents in any estate plan. Without one, your family may have to go to court for a guardianship just to pay your bills if you become incapacitated.
The Two Kinds of Powers of Attorney
- Financial power of attorney — authorizes your agent to handle financial matters: pay bills, manage accounts, file taxes, sell property, conduct business. This is what most people mean by “power of attorney.”
- Healthcare power of attorney (also called healthcare proxy or medical POA) — authorizes your agent to make medical decisions if you can’t. Closely related to advance directives like living wills.
Many people designate the same person for both roles, but they can be different people — some families separate medical decision-making from financial decision-making intentionally.
Durable vs. Springing vs. Limited
- Durable power of attorney — remains in effect even if you become incapacitated. This is essential for estate-planning purposes. A regular (non-durable) POA terminates the moment you lose capacity — which is precisely when you need it most
- Springing power of attorney — takes effect only when a triggering event occurs (typically a doctor certifying you’ve lost capacity). Conceptually appealing but practically problematic: getting the certification can be slow, and banks sometimes resist accepting them. Many estate attorneys now recommend a durable POA effective immediately, held by a trusted agent who simply doesn’t use it until needed
- Limited (or “special”) power of attorney — restricted to a specific transaction or time period. Example: “My agent has authority to sell my Florida house while I’m in the hospital this month.” Useful, but limited in scope
- General power of attorney — broad authority over financial matters; default for most estate-planning POAs
What Your Agent Can Do
A typical financial POA authorizes the agent to:
- Open, close, and manage bank and brokerage accounts
- Pay bills and write checks
- File and pay taxes
- Buy, sell, or manage real estate and other property
- Manage retirement accounts (including IRA contributions, distributions, conversions, and beneficiary changes — if specifically authorized; some powers are restricted by default)
- Apply for government benefits (Social Security, Medicare, Medicaid)
- Conduct legal proceedings on your behalf
- Manage your business interests
- Make gifts on your behalf (only if explicitly authorized — an unrestricted gifting power can be abused)
The agent has a fiduciary duty — they must act in your best interest, keep your funds separate from their own, and avoid self-dealing. Violations can be criminal.
Choosing Your Agent
The single most important decision. Your agent should be:
- Trustworthy — this person could move money out of your accounts. Pick someone whose judgment and integrity you fully trust
- Financially competent — they don’t need to be sophisticated, but they need to understand checkbooks, basic banking, and not be in financial distress themselves
- Willing to serve — ask first. The role can be demanding, especially during a long illness
- Geographically accessible — an agent who lives across the country can manage online, but it’s harder for some transactions (in-person banking, dealing with a house sale)
- Younger than you — or at minimum, likely to outlive you and remain capable
Always name a backup. The primary agent may predecease you, become incapacitated themselves, or be unable to serve when needed. Multiple agents can act jointly or independently — spell out which in the document.
When It Starts and Ends
- Starts — immediately upon signing (for an “effective immediately” POA) or upon a triggering event (springing). Even an effective-immediately POA is normally held by the agent and not used until needed
- Ends — upon your death (your executor takes over from there), upon your revocation in writing, upon your divorce (in some states, if your spouse is the agent), upon the death or resignation of the agent (then the backup takes over), or upon a date you specified
Common Pitfalls
- Not having one at all — the most common and costly mistake. Without a POA, your family may face an expensive court guardianship proceeding to handle basic financial tasks
- Naming a problematic agent — financial elder abuse is overwhelmingly committed by family members with POA authority. Choose carefully
- Not making it durable — a non-durable POA stops working at the worst possible moment
- Outdated POA — banks sometimes refuse POAs older than a few years (despite no legal basis); update yours every 5 years or so to reduce friction
- Generic forms vs. state requirements — many states have specific statutory POA forms that banks and brokerages will accept without question; using one matters in practice
Educational only. Estate-planning laws — including which documents are valid, who can serve as executor or agent, witness and notary requirements, and how assets pass — vary significantly by state. This article is not legal advice. Consult a licensed attorney in your state before drafting or relying on any estate document.