Illinois Probate Act Guardianship: Types, Duties, and Alternatives

Illinois adult guardianship is a court proceeding under Article XIa of the Probate Act (755 ILCS 5/11a-1 through 11a-23) in which a judge appoints someone to make personal decisions, financial decisions, or both for an adult who can no longer make them. The Act treats guardianship as a last resort, permitted “only to the extent necessitated by the individual’s actual mental, physical and adaptive limitations.”¹ Before a court will appoint anyone, the petitioner has to prove the need by clear and convincing evidence, and the resulting order is tailored to what the person actually cannot do rather than a blanket takeover.

Who Qualifies as a Person With a Disability

A court cannot appoint a guardian unless it first finds the adult meets the statutory definition in Section 11a-2. That definition covers three groups of adults age 18 or older:²

People who cannot fully manage personal or financial affairs due to mental deterioration or physical incapacity.
People with a diagnosed mental illness or developmental disability that prevents them from fully managing their own affairs.
People who are wasting their estate through gambling, substance abuse, or similar conduct to the point where they or their dependents face real hardship.

A diagnosis by itself never carries the day. The court has to see a direct link between the condition and specific tasks the person cannot handle, whether that is paying bills, arranging medical care, or something else.

Types of Guardianship in Illinois

Illinois separates guardianship into two spheres and two scopes. Picking the right combination matters, because a plenary order over both spheres removes almost every legal right the adult has, while a narrow limited order may only touch one area.

Guardian of the Person

A guardian of the person handles decisions about the ward’s daily life: health care, living arrangements, education, and personal well-being. It applies when the court finds by clear and convincing evidence that the adult cannot make or communicate responsible decisions about their own care.³

Guardian of the Estate

A guardian of the estate manages money, investments, property, and financial obligations. This applies when the court finds by clear and convincing evidence that the adult cannot manage their financial affairs. Estate guardianship can stand alone. Someone perfectly capable of running their own household but unable to handle a complex portfolio may need an estate guardian and nothing more.

Limited or Plenary

Limited guardianship gives the guardian authority only over specific areas where the adult demonstrably cannot function, leaving the person in control of everything else. Plenary guardianship grants full authority over the relevant sphere and is reserved for situations where incapacity is pervasive.³ Because the statute requires guardianship only to the extent the person’s limitations require, courts are expected to reach for limited orders first.

Filing the Petition

The case begins with a petition filed in the circuit court of the county where the respondent lives. Any “reputable person” can file, and the respondent can file on their own behalf.³ Section 11a-8 lists what the petition has to include when the information is known or reasonably available:⁴

The petitioner’s relationship to the respondent and interest in the case.
The respondent’s name, date of birth, and current residence.
The reasons a guardian is needed.
Whether the respondent already has a guardian or has signed a power of attorney.
Names and addresses of the respondent’s spouse, adult children, parents, and adult siblings, or the nearest known adult relatives if none of those exist.
The name and address of whoever the respondent lives with, or the facility housing them.
The approximate value of the respondent’s real and personal property and anticipated annual income.
The name, address, age, occupation, and relationship to the respondent of the proposed guardian.

If the petition asks the court to activate a previously designated standby guardian, it also has to describe that earlier appointment and the circumstances triggering the request.

What Happens After Filing

The court sets a hearing within 30 days and, in most cases, appoints a guardian ad litem (GAL) to investigate and report on the respondent’s best interests. The GAL can be skipped only when the court finds one isn’t necessary to protect the respondent. A GAL who isn’t a licensed attorney must have training or experience with the type of disability alleged.⁵

The GAL personally observes the respondent, explains the petition to them in writing and out loud, asks their position on the proposed guardianship and guardian, reviews medical and mental health records, and files a written report with a recommendation on whether guardianship is appropriate. The GAL also testifies at the hearing.⁵

At the hearing, Section 11a-11 gives the respondent the right to counsel, the right to demand a six-person jury, and the right to present evidence and cross-examine witnesses.¹ The respondent has to be present unless the court excuses them because they refuse to attend or would be harmed by attending. The respondent, the GAL, or the respondent’s attorney can also ask the court to close the hearing to the public.

To win the appointment, the petitioner must prove both the disability and the need for a guardian by clear and convincing evidence. That is well above the everyday civil standard of more likely than not.³

Who Can Serve as Guardian

Section 11a-5 sets minimum qualifications for an individual guardian. The person must:⁶

Be at least 18 years old.
Be a resident of the United States.
Not be “of unsound mind.”
Not themselves be adjudicated as a person with a disability under the Act.
Not have a felony conviction, subject to a narrow exception.

A court can appoint someone with a felony conviction only if it finds the appointment serves the ward’s best interests after weighing the nature of the offense, how long ago it occurred, and evidence of rehabilitation. There is no exception for felonies involving harm or threats to a minor, an elderly person, or a person with a disability, including any felony sexual offense.⁶

Public agencies and nonprofit organizations can also serve, provided the court finds them capable of running an appropriate program. One firm bar: an agency that directly provides residential services to the ward cannot be appointed as guardian, and neither can an employee of that agency.

Duties of a Guardian of the Person

The personal guardian has custody of the ward and arranges for their support, care, health, comfort, education, and any professional services they need. Section 11a-17 also requires the guardian to “assist the ward in the development of maximum self-reliance and independence.”⁷

Two limits shape every decision. The guardian acts only within the scope of what the court order specifies, and the guardian must follow the ward’s current preferences to the extent the ward can participate and those preferences are known or reasonably discoverable. The guardian can override a preference only when following it would cause substantial harm to the ward’s welfare or finances. Even then, the guardian must give substantial weight to what the ward would have wanted if competent, drawing on the ward’s beliefs, values, and prior expressed wishes. When those cannot be determined after reasonable effort, the guardian applies a pure best-interests standard.⁷

One restriction catches families off guard. A guardian of the person cannot admit the ward to a mental health facility unless the ward has capacity to consent and voluntarily requests admission under the Mental Health and Developmental Disabilities Code.⁸

If the court directs it, the personal guardian files periodic reports covering the ward’s mental, physical, and social condition, every residence during the reporting period, a summary of services provided, a description of the guardian’s activities on the ward’s behalf, and a recommendation on whether guardianship should continue.⁷

Duties of a Guardian of the Estate

Under Section 11a-18, the estate guardian manages and invests the ward’s assets within the scope of the court order. The statute requires the guardian to manage the estate “frugally” and to apply income and principal to the comfort, support, and education of the ward, the ward’s minor and adult dependent children, and any relatives entitled to support from the ward.⁹

The court can authorize broader powers on petition, allowing the guardian to do what the ward could do if present and not under a disability. Before granting expanded powers, the court considers the permanence of the ward’s condition and the family members and others the ward would normally provide for.⁹

Financial guardians answer to the court. The court may require an inventory of the ward’s assets and annual accountings documenting income received and expenditures made. Significant financial transactions beyond routine support typically need court approval before the guardian can proceed.

Guardian Compensation

Guardians can receive reasonable compensation, but the court reviews and approves fees. In deciding whether fees are reasonable, the court looks at the powers and duties assigned, the necessity of the services, the time and difficulty involved, the ward’s needs, and the cost of alternatives. All fees and expenses must be documented and submitted to the court.¹⁰ Family guardians commonly serve without pay; when a professional or public guardian is involved, compensation is a regular line item drawn from the ward’s estate.

Temporary Guardianship for Urgent Situations

Section 11a-4 allows the court to appoint a temporary guardian when there is an immediate need to protect the alleged person with a disability or their estate. The court can grant this before a permanent guardian is named, while an appeal is pending, during a citation proceeding, or when an existing guardian has died, become incapacitated, or resigned.¹¹

A temporary guardianship expires within 60 days, or whenever a permanent guardian is appointed, whichever comes first. When no formal adjudication of disability has happened yet, the court can extend a temporary appointment up to 120 days from the original date, but only if the extension is necessary to protect the person from abuse, neglect, self-neglect, exploitation, or other harm.¹¹ The ward can petition at any time to revoke the appointment, and the statute makes clear that the ward’s interests are paramount over those of the petitioner or a care provider.

Ending or Changing a Guardianship

Guardianship is not necessarily permanent. Under Section 11a-20, the ward or anyone acting on their behalf can petition to terminate the disability adjudication, revoke the guardian’s authority, or modify the guardian’s duties. The ward’s request does not have to be a formal filing; it can arrive as an informal letter, a phone call, or an in-person visit to the court. The court can appoint a GAL to investigate, prepare the petition, and assist the ward.¹²

A streamlined process is available when the guardian and ward agree. If the guardian files a verified petition stating that ending or modifying the guardianship is in the ward’s best interests, a physician’s report confirms the ward no longer needs guardianship (or needs a different scope), and the ward no longer wishes to be under guardianship, the court can act without a full adversarial hearing. In that streamlined proceeding, the guardianship continues only if someone proves by clear and convincing evidence that the ward still cannot perform the necessary tasks.¹³

Modification matters when a ward’s condition improves. A person originally placed under plenary guardianship who develops greater capacity can petition to convert to a limited guardianship. The court can also replace a guardian who is failing to fulfill their duties, on petition by the ward, a family member, or another interested party.

Alternatives Worth Considering First

Because guardianship strips legal rights, Illinois law encourages less restrictive options.

Power of Attorney

Under the Illinois Power of Attorney Act, a person can designate an agent to handle financial decisions, health care decisions, or both while they still have capacity. The person keeps the right to revoke the power of attorney and to make their own decisions alongside the agent. A power of attorney executed before capacity is lost can eliminate the need for guardianship entirely.

Supported Decision-Making

The Supported Decision-Making Agreement Act (755 ILCS 9/) creates a formal alternative for adults with intellectual and developmental disabilities. Under the Act, an adult chooses trusted supporters to help them understand and make decisions about daily life without giving up any legal authority. The individual keeps full decision-making power; the supporters provide information and help.¹⁴

The Act starts from a presumption that all adults are capable of making decisions about daily living and have legal capacity unless a court says otherwise. A diagnosis of mental illness, intellectual disability, or developmental disability alone does not overcome that presumption. Supporters are prohibited from exerting undue influence, making decisions on the person’s behalf, or using information gained through the agreement for personal purposes. Either party can end the agreement at any time, and it terminates automatically if the supporter is found to have committed abuse or neglect.¹⁴

1
Justia Law. Illinois Code 755 ILCS 5 Art XIa – Guardians for Adults With Disabilities
2
Illinois Guardianship and Advocacy Commission. Illinois Code 755 ILCS 5/11a-2 – Definitions
3
Justia Law. Illinois Code 755 ILCS 5/11a-3 – Adjudication of Disability, Power to Appoint Guardian
4
Illinois General Assembly. Illinois Code 755 ILCS 5/11a-8 – Petition
5
Illinois General Assembly. Illinois Code 755 ILCS 5/11a-10 – Hearing on Petition
6
Illinois General Assembly. Illinois Code 755 ILCS 5/11a-5 – Who May Act as Guardian
7
Illinois General Assembly. Illinois Code 755 ILCS 5/11a-17 – Duties of Personal Guardian
8
Justia Law. Illinois Code 755 ILCS 5/11a-17 – Duties of Personal Guardian
9
Illinois General Assembly. Illinois Code 755 ILCS 5/11a-18 – Duties of the Estate Guardian
10
Illinois General Assembly. Illinois Code 755 ILCS 5/13-3.1 – Public Guardian Compensation
11
Illinois General Assembly. Illinois Code 755 ILCS 5/11a-4 – Temporary Guardian
12
Justia Law. Illinois Code 755 ILCS 5/11a-20 – Termination of Adjudication of Disability, Revocation of Letters, Modification
13
Illinois General Assembly. Illinois Code 755 ILCS 5/11a-20 – Termination of Adjudication of Disability, Revocation of Letters, Modification
14
Illinois General Assembly. Illinois Code 755 ILCS 9 – Supported Decision-Making Agreement Act