If someone you care about has already lost mental capacity, you cannot get power of attorney for someone who is incapacitated by signing a new one now. A power of attorney is a voluntary document, and signing it requires the principal to understand what they are handing over. Once that understanding is gone, the document cannot be created. Your realistic options are two: use a durable or springing power of attorney the person signed earlier, if one exists, or petition a probate court to appoint you as guardian, conservator, or both.
Why You Cannot Sign a New Power of Attorney Now
This is the point that trips up nearly everyone searching for help. You cannot walk into a lawyer’s office and sign a power of attorney on behalf of a parent, spouse, or sibling who can no longer make decisions. The principal chooses their agent, defines the scope of authority, and signs. That act requires mental capacity: the ability to understand what the document does and what powers it transfers. Without that understanding, the document is legally invalid even if a notary stamps it.
A majority of states have adopted some version of the Uniform Power of Attorney Act, which treats every power of attorney as durable by default, meaning it survives the principal’s later incapacity. But durability only helps when the document was signed while the principal still had capacity. Once incapacity has set in, no version of a power of attorney can be newly executed. Court intervention is the only path forward.
Check First Whether One Was Already Signed
Before starting anything at the courthouse, find out whether the person already signed a durable or springing power of attorney while they were still competent. Many people set these up during estate planning, and family members often don’t know they exist. Look through the person’s files, contact their attorney, and ask their bank or financial advisor.
A durable power of attorney takes effect the moment it is signed and remains valid after the principal loses capacity. If one exists, the named agent can begin acting right away by presenting the document to banks, hospitals, and other institutions. No court is involved.
A springing power of attorney works differently. It sits dormant until a triggering event occurs, usually the principal’s incapacity. To activate it, the agent typically needs one or two physicians to examine the principal and certify in writing that the person is incapacitated. Some documents name a specific individual authorized to make that determination. Once the certification is complete, the agent’s authority begins. Activation can create delays because doctors need to be located and willing to certify, and some financial institutions are slow to accept them, but it is still far simpler than court.
Check separately for a healthcare power of attorney, sometimes called a medical power of attorney or healthcare proxy. That document names an agent to make treatment decisions and often works alongside a living will that spells out the principal’s preferences for situations like life-sustaining treatment.1National Institute on Aging. Advance Care Planning: Advance Directives for Health Care A financial power of attorney does not authorize medical decisions, and a healthcare proxy does not authorize financial ones.
Petitioning for Guardianship or Conservatorship
When no power of attorney exists and the person is already incapacitated, someone must petition a court, usually a probate court, to be appointed as guardian, conservator, or both. Terminology varies by state. In general, a guardian handles personal and medical decisions, and a conservator manages finances and property. Some states use “guardian of the person” and “guardian of the estate” instead. The process is designed to protect the incapacitated person from exploitation, which is why it involves multiple layers of review.
Filing the Petition
The process starts with a petition that explains why the person needs a guardian or conservator. It identifies the proposed guardian, describes the person’s condition, and includes medical evidence of incapacity. Any interested adult can file: a family member, a friend, or a social services agency. Most courts require the petition to list the person’s closest relatives so they can be notified. Relatives who must be notified typically include the spouse, adult children, parents, and adult siblings. The notice requirement exists so anyone who objects to the proposed guardian, or who believes the person is not actually incapacitated, has a chance to be heard.
The Hearing
After filing, the court schedules a hearing. The judge reviews medical evidence, hears testimony, and decides two things: whether the person is truly incapacitated, and whether the proposed guardian is suitable. Courts in most states also appoint a guardian ad litem, an independent attorney whose job is to investigate the facts and represent the incapacitated person’s interests, not the petitioner’s.
If the judge approves the petition, the order will spell out the guardian’s specific powers. Courts increasingly prefer the least restrictive option that still protects the person, so consider asking for a limited guardianship covering only the areas where help is genuinely needed. A judge is likelier to approve a narrower request than a request for full plenary authority over every aspect of the person’s life. For conservatorships involving financial management, the court usually requires the conservator to post a surety bond tied to the value of the estate. Most courts also mandate periodic reviews and annual financial accountings after appointment.
Timing and Cost
An uncontested guardianship, where no family member objects, typically takes a few weeks to a few months from petition to appointment, depending on the court’s calendar and how quickly medical evidence can be gathered. Contested cases can stretch much longer.
Attorney fees for an uncontested guardianship generally range from roughly $2,500 to $10,000, and complex or contested cases can run significantly higher. Court filing fees are usually a few hundred dollars. Add the cost of medical evaluations, the guardian ad litem’s fees (which can run several hundred to several thousand dollars), and surety bond premiums if the court requires bonding. Even a straightforward guardianship can cost several thousand dollars before the guardian’s authority begins.
When the Situation Cannot Wait
If the incapacitated person faces an immediate medical crisis, is being financially exploited, or is at risk of serious harm, ask the court for an emergency or temporary guardianship. The process is expedited, but you still need to show real danger, not just inconvenience.
Emergency orders are short-lived. Depending on the state, they typically last 30 to 90 days and can sometimes be extended if emergency conditions persist. The temporary guardian’s powers are usually narrower than a permanent guardian’s, limited to whatever the court order specifically authorizes, such as making a single medical decision or freezing a bank account to stop ongoing theft. During that window, the full guardianship petition proceeds on its normal timeline.
The Medical Evidence You Will Need
Medical documentation is often the piece that makes or breaks a petition. Courts set a high bar because the stakes are enormous: the person loses the right to make their own decisions. A vague letter from a family doctor saying the person “can’t handle things anymore” will not be enough.
Most courts require a formal physician’s certificate or capacity evaluation. These assessments typically address the person’s diagnosis using standard diagnostic codes, prognosis, severity of cognitive impairment, ability to receive and evaluate information, ability to communicate decisions, and capacity to meet basic needs for health and safety. The evaluator may also need to address functional abilities: managing money, understanding medical options, living independently, handling daily tasks. Many court forms require the doctor to give an opinion on whether less restrictive alternatives exist.
The evaluation should be recent. Courts generally want assessments completed within a few months of the hearing, not documentation from a year ago. For progressive conditions like dementia, the evaluation should reflect the person’s current level of functioning, not the diagnosis from when symptoms first appeared.
Narrower Alternatives That May Fit
Guardianship is the most invasive legal option. If the actual need is limited, one of the following may be enough on its own.
- Representative payee for Social Security. If the person receives Social Security or SSI benefits and cannot manage those payments, contact the Social Security Administration to be appointed as a representative payee. The SSA generally looks to family members first, and no court petition is required. A payee must use the funds for the beneficiary’s needs and may be required to file annual reports accounting for the money.2Social Security Administration. Representative Payee Program3eCFR. 20 CFR Part 404 Subpart U – Representative Payment
- VA fiduciary for veterans’ benefits. If the person is a veteran receiving VA benefits, the VA can appoint a fiduciary to manage those payments. The VA runs its own investigation, including a face-to-face interview, credit check, and criminal background check.4eCFR. 38 CFR 13.100 – Fiduciary Appointments
- Special needs trust. A trust funded by family or an inheritance can pay for the person’s care without affecting eligibility for Medicaid or SSI. A trustee manages the assets, and the beneficiary does not need to be involved in financial decisions.
- Supported decision-making. A growing number of states recognize supported decision-making agreements, where the person with diminished capacity chooses trusted supporters who help them understand and make decisions rather than deciding for them. This works when the person can still participate in choices but needs guidance.
These alternatives only cover specific slices. If you need broad authority over finances, medical care, and living arrangements, guardianship remains the only comprehensive option.
What You Take On Once You Are Appointed
Appointment is not a blank check. A guardian is a fiduciary, legally obligated to act in the incapacitated person’s best interests, not their own and not other family members’. The core duties apply regardless of state. You must act in good faith, stay within the scope of authority the court granted, and make decisions that align with the person’s known values and preferences. When those preferences are not known, you must act in the person’s best interest. A conservator managing finances must keep meticulous records of every receipt, disbursement, and transaction, and most courts require annual financial accountings covering all income, expenses, assets, and debts.
Conflicts of interest are the fastest route to removal. A guardian cannot use the person’s money for personal expenses, steer business to companies they own, or make gifts from the estate to themselves. Courts can remove a guardian for mismanagement, order repayment of lost assets, surcharge the bond, and impose civil liability. In serious cases involving theft or neglect, guardians can face criminal charges including embezzlement, elder abuse, and larceny.5U.S. Department of Justice. Mistreatment and Abuse by Guardians and Other Fiduciaries