To have someone declared mentally incompetent, you file a guardianship or conservatorship petition in the local probate or surrogate court, arrange a professional capacity evaluation, and then prove at a hearing that the person can no longer make safe decisions about their care, finances, or both. A judge, not a doctor or a family, makes the legal finding. And courts rarely issue a blanket ruling that someone is “incompetent” across the board; they decide, task by task, which decisions the person can still handle and which they cannot.
What “Incompetent” Actually Means in Court
Capacity is not all-or-nothing. Someone might be unable to manage a stock portfolio yet perfectly capable of choosing where to live or consenting to medical treatment. Most states evaluate capacity in relation to specific tasks rather than issuing a global label. A judge might restrict a guardianship to financial matters and leave the person free to make their own healthcare choices.
That approach reflects a broader legal principle. The federal Department of Justice has stated that guardianship should be treated as a last resort because it removes legal rights and restricts independence and self-determination, and that courts should use it only when no less restrictive option will work.1U.S. Department of Justice. Guardianship: Less Restrictive Options Expect the judge to ask whether you tried something else first.
Try Less Restrictive Options Before You File
Courts in many states will ask whether alternatives were considered, and some will refuse to appoint a guardian if a workable alternative exists.1U.S. Department of Justice. Guardianship: Less Restrictive Options The main alternatives:
- A durable power of attorney lets the person appoint someone they trust to handle finances or healthcare, and it survives their later incapacity. The catch is timing: it must be signed while the person still understands what they are signing.
- A healthcare advance directive or proxy lets a person spell out medical wishes or designate a decision-maker for care. It also requires present capacity to execute.
- A representative payee, appointed by the Social Security Administration, can receive and manage Social Security or SSI payments for someone who cannot. A power of attorney does not give someone authority over federal benefit payments; you have to go through the SSA’s own process.2Social Security Administration. Frequently Asked Questions (FAQs) for Representative Payees
- Supported decision-making, now recognized in at least 39 states and the District of Columbia, lets a person with disabilities keep legal authority while designating trusted supporters who help them understand options and communicate decisions.
- Some states allow protective arrangements for a single transaction, such as authorizing the sale of a property or a specific medical procedure, without appointing an ongoing guardian.
If none of these can adequately protect the person, a formal petition is the appropriate next step.
Who Can File and What the Petition Must Say
In most states, a family member, friend, caregiver, medical provider, or state or local human services agency can file. Some states allow any “interested person” to petition, which can include neighbors or social workers who have observed a decline.
The petition must lay out specific reasons the person can no longer manage their affairs. Vague concerns about forgetfulness will not carry a case. Courts expect concrete examples: unpaid bills piling up, repeated financial scams, refusal of necessary medical care, wandering and getting lost, inability to maintain basic hygiene or nutrition. Documentation strengthens each of these. Save bank statements, medical records, letters from doctors, and dated notes from your own observations.
The Medical Evaluation
Every guardianship case hinges on medical evidence. Most states require the petition to include, or be followed by, a professional evaluation of the person’s cognitive and functional abilities. A physician, psychologist, or psychiatrist typically conducts it; in some states an interdisciplinary team does.
This is not a generic mental health screening. The evaluator focuses on whether the person understands the nature and consequences of the specific decisions at issue. Financial concerns lead to an assessment of numerical reasoning, understanding of contracts, and awareness of consequences. Personal-safety concerns lead to an assessment of the person’s ability to follow medical advice, recognize danger, and maintain self-care.
Even if you submit an evaluation from a private physician, the court will usually order its own. A court-appointed evaluator carries more weight because they are treated as independent. These evaluations typically cost between $400 and $3,000, depending on complexity and specialty, and costs vary by location.
The Court Hearing
Once the petition is filed and the evaluation is completed, the court schedules a hearing. It resembles a small trial. You, as petitioner, present the medical evaluation, testimony from healthcare providers, and evidence of the person’s inability to manage daily affairs. The respondent, through their attorney, can cross-examine your witnesses, present their own medical evidence, and call people who can speak to their competence.
The judge weighs the medical evidence against what they observe in the courtroom and hear from witnesses. In most courts this is not a rubber stamp. The standard for incapacity is deliberately high because the consequences are severe: a finding can strip a person of the right to manage money, choose where to live, make medical decisions, vote, marry, or enter into contracts.
Rights the Person Has During the Process
The person at the center of the case is not a passive bystander. Several protections are built in, and any petitioner should know them going in.
- The person must receive formal notice that a petition has been filed. In many states, close family members must also be notified.
- The person has the right to an attorney. Many states require the court to appoint one if the respondent cannot afford or arrange counsel. Some courts also appoint a guardian ad litem, an independent investigator who reports to the judge on what would best serve the respondent’s interests.
- The respondent has the right to be present, testify, and present their side. Judges pay attention when a respondent shows up and communicates coherently, and that in-person impression can weigh as heavily as the medical report.
- The respondent can challenge the medical evaluation, present a competing expert, and call witnesses.
These protections exist because guardianship is one of the most significant deprivations of civil rights the legal system can impose on someone who has not committed a crime.
Full or Limited Authority
If the judge finds a lack of capacity, the next question is how much authority to transfer. A full or “plenary” guardianship gives broad control over the person’s life and finances. A limited guardianship restricts the guardian’s authority to the specific areas where the person has been found incapable, leaving all other rights intact.
The trend over the past two decades has been strongly toward limited guardianship. A model law used by many states prohibits orders that are broader than necessary and requires individualized plans that account for the person’s own preferences and values. In practice, a limited order might give a guardian authority over financial transactions above a set dollar amount while leaving day-to-day spending alone, or authorize major medical decisions while the person keeps the right to choose their doctor and living arrangement. When you file, think carefully about what you are actually asking for, because the court will want to know why nothing narrower will do.
Who Gets Appointed
Some states use “guardian” for personal decisions and “conservator” for finances. Other states use the terms differently or interchangeably. Whatever the label, the court must choose someone to serve.
Courts generally prefer a family member who knows the person, has their trust, and is willing and able to take on the responsibility. Spouses, adult children, and siblings are the most common choices. If no suitable family member is available, the court may appoint a professional guardian or a public agency. Professional guardians typically charge $50 to $300 per hour depending on the jurisdiction and complexity.
A guardian or conservator takes on a fiduciary duty: they must act in the person’s best interest and cannot use the position for personal gain. Financial conservators manage assets, pay bills, file tax returns, and protect the estate from loss. Personal guardians make decisions about medical care, living arrangements, and daily welfare. Every state requires periodic reporting to the court.
To protect the person’s assets, courts frequently require a conservator to post a surety bond, which functions as a financial guarantee against mismanagement or theft. About 20 states require it; the rest give courts discretion. The bond amount is generally set based on the value of the estate’s liquid assets plus a year of estimated income, and the premium is paid from the estate.
Emergency Guardianship When You Cannot Wait
The standard process takes weeks or months. When someone faces an immediate threat to their safety or finances, that timeline is too slow.
Courts can grant a temporary guardian on an expedited basis when there is evidence of immediate danger from incapacity, abuse, neglect, or exploitation. You will need urgent evidence: testimony from a doctor, social worker, or law enforcement officer showing that waiting for the normal process would put the person at serious risk. Emergency hearings are typically held within a few days.
These orders are deliberately short. Thirty to sixty days is common when the person receives notice, and orders granted without notice are shorter still. A full petition must be filed and a regular hearing held before the temporary order expires, or the authority lapses. Courts can extend for good cause, but they will not let a temporary arrangement quietly become permanent.
What It Costs
Guardianship is not cheap. Most of the costs fall on the petitioner or the incapacitated person’s estate:
- Court filing fees generally run from $50 to a few hundred dollars, depending on jurisdiction.
- Attorney fees for preparing the petition, handling the hearing, and seeing the case through typically cost $1,500 to $10,000 or more.
- A court-ordered capacity evaluation runs $400 to $3,000.
- Guardian ad litem fees, when applicable, are commonly $200 or more per hour and come out of the estate or fall on the petitioner.
- If a professional guardian is appointed, their hourly fees are paid from the estate for as long as the guardianship lasts.
- If the court requires a surety bond, annual premiums are paid from the estate.
Contested cases are dramatically more expensive. When the person or their family fights the petition, fees on both sides multiply quickly, and in many states the incapacitated person’s estate ends up paying both sides’ costs. That alone is a reason to look hard at the alternatives before filing.
Restoration and Later Challenges
A guardianship is not necessarily permanent. If the person’s condition improves, they can petition the same court to restore some or all of their rights. This happens more often than people realize, especially when the original incapacity was caused by a treatable condition such as depression, substance abuse, or a medication problem.
The person under guardianship carries the burden of proving that the need has ended. Courts rely heavily on a fresh medical evaluation and their own in-court observation of how the person communicates and reasons. Testimony from family and others who interact with the person regularly can help, though courts treat lay testimony as secondary to medical evidence.
A family member or the affected person can also challenge an existing order by filing a petition to modify or terminate it, or by appealing to a higher court where procedural errors occurred. Grounds for appeal include inadequate notice, failure to appoint legal representation, an insufficient medical evaluation, or a finding that contradicts the weight of the evidence. Some states restrict how frequently the same person can refile a modification petition after a recent denial, but the right to challenge never fully disappears, and the person under guardianship retains the right to counsel throughout.