Illinois combines a useful small-estate shortcut with one of the more important state estate taxes in the Midwest. That means many families can avoid formal probate entirely, while others discover that tax planning matters much more than they expected. This guide covers the main Illinois rules families usually need first.

Quick answer
What matters most right now

Illinois can feel more complicated than some states because probate, estate tax thresholds, and transfer rules can all matter at once.

  • Smaller estates may still qualify for an affidavit-based shortcut.
  • Illinois has a state estate tax, which matters for larger estates even when no federal estate tax is due.
  • Families should separate tax questions from day-to-day probate administration so both are handled in the right order.
Small Estate Threshold
$150,000
State Estate Tax
Yes, above $4 million
Creditor Period
6 months
Will: Witnesses Required
2 witnesses
Advance Directives
Separate health care forms
Court
Circuit Court

Probate
Probate & Small Estate Rules in Illinois

Illinois probate is filed in the Circuit Court of the county where the deceased lived. Depending on the county and the estate, administration may be handled with more or less court involvement, but the basic sequence is familiar: appoint a representative, notify creditors, gather assets, pay debts and taxes, and distribute what remains.

The first practical question is whether the estate can use the Illinois small estate affidavit. If the deceased's personal estate (not counting registered vehicles) is $150,000 or less, many families can collect property without opening formal probate at all. That threshold is high enough that many modest Illinois estates can bypass court, especially when retirement accounts and life insurance already name beneficiaries.

If the estate includes real estate titled only in the deceased person's name, or if the estate is over the small-estate threshold, formal probate is more likely. Sorting assets into probate and non-probate buckets early saves time.

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If you are weighing whether to hire an attorney, see probate lawyer costs by state for typical fee ranges, including Illinois. Executor pay is covered in executor fees by state.

Wills
Will Requirements in Illinois

Illinois generally requires a written will signed by the person making it and witnessed by two people. A notary is not what makes the will valid. The important part is the signature and witnesses.

If there is no will, Illinois intestacy rules control who inherits. For spouses and children, the share often depends on whether the deceased left descendants. That is one reason families should not assume “everything automatically goes to my spouse” without checking how the title and the statute work together.

Even when a will exists, families still need to see which assets actually pass under the will. Beneficiary designations, joint ownership, and transfer-on-death tools can override what the will says for specific assets.

Directives
Advance Directives in Illinois

Illinois uses separate advance-planning documents rather than one all-purpose form. Families often run into a power of attorney for health care and, separately, a living will. There may also be physician orders or DNR documents in the medical record.

These documents matter after a death because they often answer who had authority to make care decisions, whether there were end-of-life instructions, and where records may still be held. If hospitals or care facilities refer to an “agent,” this is often the document they mean.

When helping aging parents in Illinois plan ahead, it is worth confirming not just that the documents exist, but that at least one trusted family member knows where they are.

Taxes
Illinois Estate Tax

Illinois is one of the states where a family can owe a state estate tax even when there is no federal estate tax problem. Illinois taxes estates above $4 million, and that exemption is much lower than the federal exemption.

This matters more than many families realize. A home, retirement accounts, and life insurance can push an estate closer to that line than expected. Illinois estate tax is usually not a concern for smaller estates, but it becomes very important once families are dealing with higher-value homes, farmland, business interests, or larger retirement balances.

The exemption is $4 million per person, with graduated rates from 0.8% to 16% on amounts above it. Surviving spouses are fully exempt because the unlimited marital deduction applies at the state level too. The Illinois estate tax return (Form IL-706) is due within 9 months of death.

If an estate may be near or above that level, it is worth involving an estate attorney or CPA early rather than treating tax filing as an afterthought. External resource: Illinois Attorney General: Estate Tax. See also our article on state estate and inheritance taxes.

Planning Tools
Transfer-on-Death Tools in Illinois

Illinois is one of the states where planning outside probate can make a large difference. Accounts with payable-on-death or transfer-on-death designations usually pass directly to the named beneficiary. That means they do not become part of the probate estate the same way a regular individually owned account would.

Illinois also allows a transfer-on-death instrument for certain residential real estate. When this has been set up properly before death, it can let a home pass outside probate. Families should still review the recorded document carefully, because title issues or older documents can create complications.

For Illinois estates near the estate-tax threshold, probate avoidance and tax planning are not identical, but both matter. A good beneficiary setup may simplify transfer even when tax questions still need professional review.

Vehicle
Transferring a Vehicle After Death in Illinois

Illinois families can often transfer a vehicle without opening full probate when the estate qualifies for a small-estate affidavit or when the representative already has authority through probate. The exact path depends on how the title was held and whether a lien remains.

Before contacting the Secretary of State, gather the title, a certified death certificate, and any probate or small-estate paperwork you plan to rely on. If there is a loan on the vehicle, the lender may need to release its interest before a transfer can be completed.

Death Certificates
Getting a Death Certificate in Illinois

Illinois death certificates are issued by the Illinois Department of Public Health, Division of Vital Records. The cost is $19 for the first certified copy and $19 for each additional copy ordered at the same time. You can order online via VitalChek, by mail to IDPH, or in person at local county clerk offices.

Order 8–12 certified copies upfront. Your funeral home typically files the certificate — confirm how many copies you need before they submit so you can order them all at once. The ordering page is at dph.illinois.gov/death-records. See our guide on how many death certificates you need for a full breakdown by institution type.

Intestacy
What Happens Without a Will in Illinois

Illinois is a common-law property state (not community property). The Illinois Probate Act (755 ILCS 5/2-1) governs who inherits when no valid will exists. If a surviving spouse exists and there are no descendants, the spouse inherits everything. If a surviving spouse and descendants both exist, the spouse receives half and the descendants split the other half.

With no spouse, descendants inherit by representation. With no spouse and no descendants, parents inherit; then siblings; then more distant relatives. Dying without a will does not mean the state takes everything — it means Illinois law decides who gets your assets instead of you. If those defaults do not reflect your wishes, see our what happens if you die without a will guide.

Small Estates
Illinois Small Estate Affidavit

Illinois allows a small estate affidavit when the personal estate passing by will or intestacy is $150,000 or less, not counting motor vehicles registered with the Secretary of State (755 ILCS 5/25-1, as amended by Public Act 104-0346, effective for deaths on or after August 15, 2025 — the threshold was $100,000 before that date). The statute sets no specific waiting period, but the affidavit can only be used if no probate case is open or planned. Real property (real estate) does not qualify — it still requires probate or a deed-based transfer such as a transfer-on-death instrument.

The affidavit must be sworn before a notary. It identifies the property you are claiming and your right to receive it. Present it to the bank, financial institution, or employer along with a certified death certificate. See our full small estate affidavit guide for the complete process.

Bereavement Leave
Bereavement Leave in Illinois

Illinois has the Family Bereavement Leave Act, which took effect January 1, 2023 — one of the stronger state bereavement laws in the country. Employers with 50 or more employees must provide up to 10 working days of unpaid bereavement leave for the death of a family member, including a spouse, child, stepchild, parent, sibling, grandparent, grandchild, or in-law.

The law also covers pregnancy loss — miscarriage, stillbirth, and a failed adoption. Employees may use accrued paid leave concurrently to receive pay during the bereavement period. For a state-by-state comparison, see our bereavement leave by state guide.

Medicaid Recovery
Medicaid Estate Recovery in Illinois

Illinois can recover Medicaid costs from a deceased person's estate when the person was an inpatient in a nursing facility or other medical institution, at any age, or was 55 or older (305 ILCS 5/5-13). The claim can be made against the person's estate or against the estate of the person's spouse, regardless of the order of death. No recovery may be made until the surviving spouse dies, and then only when there is no surviving child who is under 21, blind, or permanently and totally disabled.

What the state can reach

Illinois defines the estate by the Probate Act of 1975, which generally means probate property. There is an exception: if the person received, or was entitled to receive, benefits under a long-term care insurance policy that caused assets to be disregarded, the estate also includes assets that passed to a survivor, heir, or assignee through joint tenancy, tenancy in common, survivorship, life estate, living trust, or another arrangement. A claim against those assets is not effective until it is recorded or filed as a notice of lien.

Homestead and waivers

Recovery cannot be enforced against real estate while a surviving spouse or other dependent occupies it as a homestead, if no other creditors have filed claims against the estate or those claims remain dormant. Illinois law also directs the Department of Healthcare and Family Services to waive recovery where it would not be cost-effective, would work an undue hardship, or for any other just reason. Subject to federal approval, the Department must waive any claim against the first $25,000 of an estate, and it may adopt hardship standards aimed at preserving income-producing real property or a modest home (305 ILCS 5/5-13.1). The Department must keep information and a simple form for requesting a hardship waiver on its website.

For how the federal rules work and what survivors are protected, see our guide to Medicaid estate recovery.

Resources
Illinois Estate Resources

These Illinois-specific resources cover the most common steps families need after a death:

Reviewed September 2026; Medicaid recovery section added October 7, 2026
Official and primary sources used for this state guide

We reviewed this page against official court, agency, and primary-source materials that map to the probate, transfer, directive, tax, or vehicle rules most likely to matter after a death in this state.