Illinois Probate Process Explained: Timelines, Costs, and Common Pitfalls

Overview of Illinois probate

Illinois probate is governed by the Illinois Probate Act of 1975 and is administered through the Circuit Court in the county where the decedent resided at the time of death. Unlike Texas, Illinois does not have a tradition of fully unsupervised independent administration — most Illinois probate proceedings involve a degree of court oversight, though the level varies based on the size and complexity of the estate.

For estates with gross assets exceeding $100,000 in solely owned personal property, or any solely owned real estate regardless of value, a formal probate proceeding is generally required to transfer assets. Understanding the process — and its costs — helps families plan more effectively, both before and after a death.

Step 1: Opening the estate

Probate begins with filing a petition in the Circuit Court of the county where the decedent last resided. The petition requests admission of the will to probate (if one exists) and appointment of an executor. If there is no will, the court appoints an administrator, typically the surviving spouse or an adult child under the order of preference set by Illinois law. The court issues Letters of Office — the Illinois equivalent of Texas's Letters Testamentary — granting the representative authority to act on behalf of the estate.

Step 2: Notice to heirs and legatees

Within 14 days of the issuance of Letters of Office, the representative must mail notice of the probate proceeding to all heirs and legatees — those who would inherit under the will or, if there is no will, under Illinois intestacy law. This notice gives interested parties the opportunity to contest the will or object to the appointment of the representative.

Step 3: Publication notice to creditors and the claims period

The representative must publish a notice to creditors in a local newspaper once a week for three consecutive weeks. Illinois law gives creditors six months from the date of death — or three months from the date of the first publication, whichever is later — to file claims against the estate. This claims period is one of the most significant timelines in Illinois probate, and distributions generally should not be made until it has expired.

Step 4: Inventory and estate management

Within 60 days of appointment, the representative must file an inventory of all estate assets with the court. The inventory must list assets at fair market value as of the date of death. The representative is responsible for managing estate assets — maintaining property, investing liquid assets prudently, filing the decedent's final income tax return, and obtaining an estate tax closing letter from the IRS if a federal estate tax return is required.

Step 5: Accounting, distribution, and closing

Before the estate can be closed, the representative must file a final accounting with the court detailing all receipts, disbursements, and proposed distributions. Beneficiaries must receive notice and have an opportunity to object. Once the court approves the accounting and distribution, the representative distributes assets and files a closing report. The full process in Illinois typically takes nine months to two years, depending on complexity and whether any disputes arise.

Costs of Illinois probate

Illinois probate costs typically include court filing fees, publication costs, attorney fees, and the representative's compensation. Attorney fees in Illinois probate are based on a reasonable compensation standard rather than a fixed statutory percentage. Contested proceedings, real estate sales, and federal estate tax filings all add to the cost and time involved.

If you are serving as an executor or administrator of an Illinois estate, or if you have questions about the probate process, our attorneys are ready to help. Contact us to schedule a consultation.