How to Probate an Estate in Illinois
A complete guide to the probate process in Illinois, covering small estate thresholds, court procedures, timelines, and strategies to simplify or avoid probate. Whether you are an executor named in a will or an heir handling an intestate estate, this page walks you through every step.
Quick Facts: Probate in Illinois
Do You Need Probate in Illinois?
Not every estate in Illinois needs to go through formal probate. The key factor is the value of the estate. Illinois sets its small estate threshold at $100,000. Estates below this amount can typically use a simplified procedure instead of full probate.
For context, the national median small estate threshold is $75,000. Illinois's threshold is higher than average, meaning more families can avoid formal probate entirely.
Small estates under $100,000 with no real property may use small estate affidavit. If the estate exceeds this amount, you will need to file for probate through the Circuit Court (Probate Division) in the county where the deceased lived.
Certain assets bypass probate regardless of value. These include life insurance payable to a named beneficiary, retirement accounts with designated beneficiaries, jointly held property with right of survivorship, and assets held in a revocable living trust.
Step-by-Step: Filing for Probate in Illinois
Locate the Will and Key Documents
Find the original will, if one exists. In Illinois, the will must be filed with the Circuit Court (Probate Division) in the county where the deceased lived. Also gather death certificates ($19 for the first copy in Illinois), financial account statements, property deeds, and insurance policies.
File the Petition with the Circuit Court (Probate Division)
Submit the will and a petition to open probate at the Circuit Court (Probate Division). If there is no will (intestate), you will file a petition for administration instead. The court will schedule a hearing, typically within a few weeks of filing.
Receive Letters of Administration
After the court approves your petition, you will receive Letters Testamentary (if there is a will) or Letters of Administration (if there is no will). These letters give you legal authority to act on behalf of the estate, including accessing bank accounts, selling property, and paying debts.
Notify Creditors and Beneficiaries
Illinois law requires you to notify known creditors of the death and the probate proceeding. You must also publish a notice in a local newspaper to alert any unknown creditors. Creditors then have a set period to file claims against the estate.
Inventory and Appraise Estate Assets
Create a detailed inventory of all estate assets and their fair market value. This includes real estate, vehicles, bank accounts, investments, personal property, and business interests. Some assets may require a professional appraisal. File the inventory with the Circuit Court (Probate Division).
Pay Debts, Taxes, and Expenses
Use estate funds to pay valid creditor claims, outstanding debts, final income taxes, and estate administration expenses. Illinois has a state estate tax, so you will also need to file a state estate tax return if the estate exceeds the exemption threshold. Federal estate tax applies to estates over $13.61 million.
Distribute Remaining Assets to Beneficiaries
Once debts, taxes, and expenses are settled, distribute the remaining assets according to the will. If there is no will, Illinois's intestacy laws determine who inherits. Spouses, children, and other close relatives are prioritized under intestate succession.
Close the Estate
File a final accounting with the Circuit Court (Probate Division) showing all assets received, debts paid, and distributions made. Once the court approves, the estate is officially closed and you are released from your duties as executor or administrator. This entire process in Illinois typically takes 6-18 months.
Small Estate Procedures in Illinois
If the estate is valued at $100,000 or less, Illinois offers simplified procedures that can save significant time and money compared to formal probate.
Illinois Small Estate Rules
Small estates under $100,000 with no real property may use small estate affidavit. This is more generous than the national median threshold of $75,000.
Small Estate Affidavit
For qualifying estates, an heir or beneficiary can file a small estate affidavit to collect assets without going through formal probate. This is a sworn statement declaring the estate value, listing the assets, and identifying the rightful heirs. Banks, employers, and other institutions will typically release funds upon receiving a notarized affidavit along with a certified death certificate.
Summary Administration
Some estates that exceed the affidavit threshold but are still relatively small may qualify for summary administration in Illinois. This is a shortened version of full probate with fewer requirements and a faster timeline. The Circuit Court (Probate Division) handles these cases with simplified paperwork and fewer hearings.
How Long Does Probate Take in Illinois?
Probate in Illinois typically takes 6-18 months. The actual duration depends on several factors, including the size and complexity of the estate, whether anyone contests the will, and the current caseload of the Circuit Court (Probate Division).
Local Context
Illinois has a $4 million estate tax exemption, which is significantly lower than the federal exemption. Estates exceeding this threshold face graduated rates. The state also has an "independent administration" option that reduces court supervision.
Factors That Affect Timeline
- Estate size: Small estates under $100,000 can use simplified procedures and may be resolved in weeks rather than months.
- Will contests: If anyone challenges the validity of the will, probate can be delayed by months or even years while the dispute is resolved.
- Creditor claims: Creditors must be given time to file claims against the estate. This waiting period is set by Illinois law and cannot be shortened.
- Tax filings: Illinois requires a state estate tax return, which adds time. Federal estate tax returns are also due within 9 months of death for qualifying estates.
How to Avoid Probate in Illinois
Many families in Illinois can reduce or eliminate the need for probate through advance planning. Here are the most common strategies, some of which are particularly effective in Illinois.
Revocable Living Trust
Assets held in a revocable living trust pass directly to beneficiaries without probate. This is the most comprehensive strategy and works well for estates of any size in Illinois.
Transfer-on-Death Designations
Bank accounts (POD), investment accounts (TOD), and in some cases real estate (TOD deeds) can be set up to transfer automatically upon death without going through probate.
Joint Ownership
Property held in joint tenancy with right of survivorship passes automatically to the surviving owner. Tenancy by the entirety (for married couples) offers similar protection in states that recognize it.
Beneficiary Designations
Life insurance, retirement accounts (401(k), IRA), and annuities all pass directly to named beneficiaries. Keeping these designations up to date is one of the simplest ways to reduce the size of the probate estate.
Small Estate Shortcut
If the estate is worth less than $100,000, you may qualify for Illinois's small estate procedures. This is a faster and cheaper alternative to formal probate, often requiring only a simple affidavit rather than a full court proceeding.
Death Certificates in Illinois
You will need certified copies of the death certificate to begin the probate process in Illinois. The Circuit Court (Probate Division) requires at least one certified copy when you file the petition, and banks, insurance companies, and government agencies will each require their own copies.
We recommend ordering 10 to 15 certified copies. For full ordering instructions and county-level offices, see our death certificates guide.
Estate Tax in Illinois
Illinois levies a state estate tax on estates exceeding $4,000,000. The tax rate is 0.8-16%. This is in addition to the federal estate tax, which applies to estates exceeding $13.61 million. The estate tax return must be filed and any tax paid before the estate can be closed in probate.
For complete details on tax thresholds and exemptions, see our Illinois estate tax guide.
County Probate and Vital Records Offices in Illinois
Probate is filed in the county where the deceased lived. Below are the major county offices in Illinois where you can file probate petitions and obtain death certificates.
| County | Office | Phone | Website |
|---|---|---|---|
| Cook County | Cook County Clerk Vital Records | (312) 603-7790 | Visit |
| DuPage County | DuPage County Clerk Vital Records | (630) 407-5500 | Visit |
| Lake County | Lake County Clerk Vital Records | (847) 377-2400 | Visit |
| Will County | Will County Clerk Vital Records | (815) 740-4615 | Visit |
Frequently Asked Questions: Probate in Illinois
What is the probate threshold in Illinois?
The small estate threshold in Illinois is $100,000. Small estates under $100,000 with no real property may use small estate affidavit. This is above the national median of $75,000, giving more families access to simplified procedures.
How long does probate take in Illinois?
Probate in Illinois typically takes 6-18 months. The exact duration depends on the size and complexity of the estate, whether anyone contests the will, and how quickly the Circuit Court (Probate Division) processes filings. Illinois has a $4 million estate tax exemption, which is significantly lower than the federal exemption. Estates exceeding this threshold face graduated rates. The state also has an "independent administration" option that reduces court supervision.
Which court handles probate in Illinois?
Probate in Illinois is handled by the Circuit Court (Probate Division). You file the will and petition for probate in the county where the deceased lived.
How can I avoid probate in Illinois?
Common strategies to avoid probate in Illinois include creating a revocable living trust, holding property in joint tenancy with right of survivorship, using transfer-on-death (TOD) designations on financial accounts, and naming beneficiaries on life insurance and retirement accounts.
Does Illinois have an estate or inheritance tax that affects probate?
Yes, Illinois has a state estate tax with an exemption of $4,000,000. This can affect the probate process because estate tax returns must be filed before the estate can be closed. The federal estate tax also applies to estates exceeding $13.61 million.
Important
This information is for general guidance only. It is not legal, financial, or tax advice. Laws vary by state and change regularly. Always verify current details with the relevant authority. This guide covers Illinois. Other states may have different rules. Last reviewed: March 2026. If you spot an error, please contact us. See our editorial policy.