Almost any mentally competent adult can be a proxy. The baseline is simple: at least 18 years old, able to understand the responsibilities involved, and willing to act. Beyond that, who qualifies depends on what the proxy is being asked to do. A shareholder proxy, a financial agent under a power of attorney, a healthcare agent, and a proxy voter in a homeowners’ association each operate under different rules, and some roles disqualify people the others would accept.
The Baseline Requirements
Two requirements apply across every context. The proxy must be a legal adult, which means 18 in every U.S. state. And the proxy must have the mental capacity to understand the decisions they’ll be making on someone else’s behalf. A person who cannot grasp the nature of the role cannot legally fill it.
Past that, the principal (the person granting the authority) generally has wide latitude. The law doesn’t require a proxy to hold any professional license, carry particular credentials, or be related to the principal. You can usually pick whoever you want. The specific setting is where restrictions start to appear.
Who Can Serve as a Financial Agent
In the financial context, a proxy is usually called an “agent” or “attorney-in-fact,” and the document granting the authority is a power of attorney. Through a financial power of attorney, you can authorize someone to manage bank accounts, pay bills, buy or sell property, handle investments, and deal with tax matters on your behalf.
Your agent doesn’t have to be a financial professional. Some people name an accountant or financial advisor; most name a spouse, adult child, or close friend. Credentials matter less than trust, because the authority you’re handing over is enormous. An agent with a financial power of attorney can move money, sign contracts, and make binding financial commitments in your name.
A felony conviction generally does not disqualify someone from serving as a financial agent, though it would raise obvious practical concerns. The principal can also narrow the agent’s authority inside the document itself, limiting it to specific transactions, time periods, or dollar amounts.
Durable, Nondurable, and Springing Powers
The person you pick matters more when the power is durable. A durable power of attorney stays in effect even after you lose mental capacity, which is precisely when you’re most likely to need someone acting for you. A nondurable power terminates the moment you become incapacitated and is typically used for one-off transactions, like closing a real estate deal while you’re abroad. If a document doesn’t say it’s durable, most states treat it as nondurable by default.
A springing power sits dormant until a triggering event, usually the principal’s incapacity, occurs. The practical problem is proving the trigger: activation typically requires one or more physicians to certify incapacity, and the standards vary by state. That delay is why many planners prefer an immediately effective durable power with a trusted agent.
Who Can Serve as a Healthcare Agent
A healthcare proxy, sometimes called a healthcare agent or medical power of attorney agent, makes medical decisions if you can’t communicate your own. You designate one through a healthcare power of attorney or advance directive.
The legal threshold is the same as other proxy roles: a competent adult. The practical bar is higher. A healthcare agent may face decisions about surgery, medication, pain management, and end-of-life care, including whether to withdraw ventilator support or decline resuscitation. The person you pick should understand your values, be willing to push back on doctors, and be able to make hard decisions under pressure.
Your agent cannot override your written wishes. If you’ve signed a living will stating specific preferences about end-of-life care, those instructions take priority, and your agent’s job is to see them carried out rather than substitute their own judgment.
People Who Cannot Serve
Healthcare proxy laws impose restrictions you won’t find in the financial setting. Many states prohibit your treating physician from also serving as your healthcare agent, because the same person shouldn’t be both recommending treatment and deciding whether to accept it. Employees of your healthcare facility or residential care home are often barred as well, unless they happen to be a relative. These rules exist to prevent conflicts of interest where the stakes are life and death.
Who Can Serve as a Shareholder Proxy
When shareholders can’t attend a company meeting, they can appoint a proxy to vote their shares. Under most state corporate statutes and the Model Business Corporation Act, a shareholder may appoint a proxy by signing an appointment form or sending an electronic transmission. The proxy holder does not need to be a shareholder, a director, or an officer of the company. Shareholders are free to pick virtually anyone.
The authority can be broad, giving the proxy discretion to vote however they see fit, or narrow, limited to specific proposals on the agenda. For publicly traded companies, the SEC regulates proxy solicitation and requires companies to distribute proxy statements so the holder can vote on an informed basis. A company’s articles of incorporation or bylaws can also impose restrictions beyond the default statute.
One quirk worth knowing: a shareholder proxy typically expires three years from its date unless the document says otherwise.
Who Can Serve as a Proxy in Organizational Voting
Proxy voting shows up often in homeowners’ associations, condominium boards, and nonprofit organizations. Whether it’s allowed, and who can hold the proxy, depends on the organization’s bylaws and applicable state law.
When it is permitted, the appointment usually must be in writing and signed by the voting member. Many bylaws add their own conditions: requiring the proxy to be another member of the organization, capping how many proxies one person can hold at a single meeting, or restricting the kinds of votes a proxy can cast. Check the governing documents before assuming any adult will qualify.
A Note on Political Elections
Proxy voting in U.S. political elections is a different matter. No state allows a voter to send a proxy to the polls. Military personnel and overseas citizens vote through absentee ballots, which are the voter’s own vote cast remotely, not a vote cast by someone else on the voter’s behalf. If you were thinking of appointing a proxy to vote in a public election, the law doesn’t permit it.
Common Disqualifications and Conflicts
Pulling the restrictions together: in healthcare, treating physicians and employees of the principal’s care facility are commonly barred. In organizational voting, bylaws may limit proxy holders to fellow members. In corporate settings, the company’s own governing documents may add restrictions. In the financial context, courts can remove an agent who has abused the role, and the principal can always build limits into the document itself.
Conflicts of interest are the most common practical disqualification, even where no statute explicitly bars them. An agent who stands to inherit from the principal, owes the principal money, or has competing business interests should think carefully before accepting the role. Courts scrutinize transactions between agents and principals closely, and even well-intentioned decisions can look suspicious when the agent had something to gain. The person who is legally qualified isn’t always the person you should pick.
Choosing Well
The legal filter for a proxy is narrow: age, capacity, and whatever context-specific bars apply. The harder filter is judgment. A proxy with the right credentials but the wrong character can do real damage, while a proxy without any special background can serve you well if they understand your wishes and can be trusted to follow them. Match the person to the role: a steady hand with money for a financial agent, someone who can hold their ground with doctors for a healthcare agent, and someone who will actually show up and vote your interests for shareholder or organizational proxies.