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Trustee vs. Executor in Illinois: What Each One Actually Does
A trustee and an executor are not the same role. In Illinois, an executor is named in a will and settles the estate through probate court under the Probate Act. A trustee manages assets held in a trust, usually without any court involvement. That is the difference that matters most when you compare a trustee vs. executor: court oversight.Key takeaways
- An executor is named in a will; a trustee is named in a trust.
- Illinois executors answer to probate court. Trustees usually don’t.
- Executors prove their authority with letters of office; trustees use a certificate of trust.
- The same person can hold both roles.
- Both owe fiduciary duties to beneficiaries under Illinois law.
In this article:
- Is a trustee the same as an executor?
- What an executor does in Illinois (the probate side)
- What a trustee does in Illinois (the trust administration side)
- Trustee vs. executor side by side
- Can the same person be both trustee and executor?
- How to choose a trustee and an executor (and common mistakes)
- Frequently asked questions
Is a trustee the same as an executor?
No. They are separate legal roles created by separate documents. An executor is named in a will and appointed by an Illinois probate court to settle a deceased person’s estate. A trustee is named in a trust document and manages the trust’s assets privately, usually with no court involvement. That’s the core of it: a will means an executor, a trust means a trustee. (Still deciding between the two documents? See will vs. trust in Illinois.) Both roles carry a fiduciary duty: a legal obligation to act in the beneficiaries’ best interest, not their own.What an executor does in Illinois (the probate side)
An executor is the person named in a will to settle a deceased person’s estate through probate court. In Illinois, executors are appointed under the Probate Act of 1975 (755 ILCS 5), and they cannot act until the court issues letters of office. The job, in plain terms: gather what your loved one owned, pay what’s owed, and pass on what’s left, all under the probate court’s watch. That means filing the will, notifying heirs and creditors, paying debts and taxes, and distributing the rest. Illinois Legal Aid Online has a plain-English overview. Illinois courts may also require a surety bond, which is insurance that protects the estate if the executor mishandles money. A will can waive the bond requirement. An executor typically serves until the estate closes; our Illinois probate services page explains how an attorney can help.Letters of office and independent vs. supervised administration
Letters of office are the certified court documents that prove an executor’s legal authority to act for an estate. In Cook County, they come from the Circuit Court of Cook County, Probate Division. Picture an Evanston family opening their father’s estate. Working with an Illinois-licensed attorney at Daci Jett Law, they file the will in Cook County probate court, request letters of office, and ask for independent administration, which lets the executor act without going back to court for each step. The alternative, supervised administration, requires court approval for major decisions. For the full sequence, see how probate works in Illinois.What a trustee does in Illinois (the trust administration side)
A trustee manages the assets held in a trust for its beneficiaries, usually without any court involvement. In Illinois, trustees operate under the Illinois Trust Code (760 ILCS 3), which took effect on January 1, 2020. The Trust Code gives trustees real homework. A trustee must notify qualified beneficiaries (those entitled to distributions now, or next in line) within 90 days after a trust becomes irrevocable, and provide an annual accounting that tracks principal (the assets) separately from income (what those assets earn). When the trust’s creator dies, the successor trustee named in the document steps in and carries out the trust’s terms. No judge is checking the math, so the fiduciary duty does all the work. Our Illinois trust administration page shows what that duty looks like in practice.Certificate of trust: proving authority without court
Trustee vs. executor side by side
Here’s how the two roles compare under Illinois law:| Feature | Executor | Trustee |
|---|---|---|
| Named in | A will | A trust document |
| Governing law | Probate Act of 1975 (755 ILCS 5) | Illinois Trust Code (760 ILCS 3) |
| Court oversight | Probate court, independent or supervised | Generally none |
| Proof of authority | Letters of office | Certificate of trust |
| Typical duration | Until the estate closes | Can last years or decades |
Can the same person be both trustee and executor?
Yes, and it happens all the time. Many Illinois plans pair a revocable trust with a pour-over will, which sends any leftover assets into the trust at death, and one trusted person fills both roles. That person wears two legal hats with separate duties. As executor, they answer to the probate court under 755 ILCS 5. As trustee, they answer directly to the beneficiaries under 760 ILCS 3.How to choose a trustee and an executor (and common mistakes)
Choose each role for the job it involves. An executor in Illinois handles a court process with deadlines, so pick someone organized and responsive. A trustee may serve for decades, so pick someone with sound judgment about money and a sense of fairness toward every beneficiary. The same person can be right for both jobs. Often they aren’t. The naming mistakes we see most often when families pick a trustee or executor in Illinois:- Naming someone without asking them first. A surprised fiduciary is rarely a willing one.
- Skipping backups. Every plan needs a successor executor and a successor trustee. (A successor trustee checklist for Illinois is coming to this blog.)
- Naming co-fiduciaries who deadlock. Equal authority plus old grievances can stall an estate for months.
- Choosing on seniority instead of skill. The eldest child isn’t automatically the best bookkeeper.
- Never revisiting the choice. The person you named in 2010 may have moved away or fallen ill.
Frequently asked questions
- Is a trustee the same as an executor?
-
No. An executor is named in a will and settles the estate through Illinois probate court. A trustee is named in a trust and manages trust assets privately, usually without court involvement.
- Can the same person be both trustee and executor?
-
Yes, and it's common. Illinois plans built around a pour-over will often have one person serving in both roles, with separate duties under the Probate Act of 1975 (755 ILCS 5) and the Illinois Trust Code (760 ILCS 3).
- Who has more power, a trustee or an executor?
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Neither one outranks the other; they control different assets. A trustee can usually act without court approval, while an executor in supervised administration needs the court's permission for major decisions.
- Does a trustee go through probate court in Illinois?
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Generally, no. Trust assets pass outside probate, and Illinois trustees administer trusts privately under the Illinois Trust Code. Courts get involved only if a dispute arises.
- What are letters of office in Cook County?
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Letters of office are the certified court documents that prove an executor's authority to act for an estate. In Cook County, they are issued by the Circuit Court of Cook County, Probate Division, after the estate is opened.
Estate Planning Guidance
Need help choosing the right executor or trustee?
Daci Jett Law helps Evanston and North Shore families understand fiduciary roles, choose the right people, and create estate plans that work when they are needed.
Speak with Daci Jett Law, LLC
Daci Jett Law provides this content as general legal information. Reading it does not create an attorney-client relationship. For advice about your specific situation, schedule a consultation.
