Filing a Creditor Claim in Illinois Probate Court

If someone owes you money and they pass away, you don't just lose that claim. Illinois law gives creditors a formal process to collect what they're owed from the deceased person's estate. But this process has strict rules, tight deadlines, and specific paperwork and missing even one step can get your claim thrown out. Knowing exactly how to file a creditor claim in Illinois probate court can mean the difference between getting paid and walking away empty-handed.

What Exactly Is a Creditor Claim in Illinois Probate?

A creditor claim is a written demand for payment submitted to the probate court overseeing a deceased person's estate. When someone dies in Illinois, their debts don't disappear. Instead, the estate managed by an executor or court-appointed administrator is responsible for paying valid debts before distributing assets to heirs.

Under the Illinois Probate Act (755 ILCS 5/18-1 through 5/18-12), creditors have a legal right to seek payment. But that right comes with conditions. You must file your claim within the correct timeframe and follow the procedures the court requires. If you're an executor trying to understand your own obligations around these claims, our overview of 755 ILCS 5 creditor claim procedures for executors and administrators covers what you need to handle on your end.

Who Is Eligible to File a Creditor Claim?

Not everyone who believes they are owed money qualifies. The following types of creditors generally have standing to file:

Unsecured creditors credit card companies, medical providers, personal loan lenders
Secured creditors mortgage lenders, auto loan companies holding collateral
Government entities the Illinois Department of Revenue, IRS, or local tax authorities
Judgment creditors anyone who holds a court judgment against the deceased
Service providers contractors, accountants, attorneys, or caregivers owed fees
Joint account holders or co-signers who paid more than their share of a shared obligation

If you're unsure whether your situation qualifies, reviewing the specific statute of limitations and deadlines for Illinois probate creditor claims can help you figure out if you still have time to act.

How Do You Actually File a Creditor Claim in Illinois Probate Court?

Filing a creditor claim in Illinois follows a structured process. Here's how it works step by step:

Step 1: Learn That a Probate Case Has Been Opened

A probate estate is opened when someone files a petition with the circuit court in the county where the deceased lived. Once the court appoints an executor or administrator, Illinois law requires that notice be published in a local newspaper to alert potential creditors. The executor may also send direct written notice to known creditors.

You don't have to wait for notice, though. If you know the person has died and a probate case is pending, you can act on your own.

Step 2: Prepare Your Claim in Writing

Illinois requires that your claim be presented in writing. Your claim document should include:

Your full name and contact information
The name of the deceased (the decedent)
The case number and county of the probate proceeding
The amount you claim is owed
A clear description of why the debt exists (e.g., "unpaid medical invoice #4521 dated 03/15/2023")
Supporting documentation contracts, invoices, promissory notes, account statements, or judgments

Vague claims like "John owed me money" without documentation are unlikely to survive an objection. Be specific and attach proof.

Step 3: File the Claim With the Clerk of the Circuit Court

You must file your written claim with the Clerk of the Circuit Court in the county where the probate estate is being administered. In most cases, you'll need to:

Complete your claim form or written statement
Attach copies of supporting documents
Pay the required filing fee (this varies by county, but typically ranges from $30 to $75)
File the original with the court clerk and keep a copy for your records

You'll also need to send a copy of the filed claim to the executor or administrator of the estate, either by mail or in person.

Step 4: Serve the Executor or Administrator

After filing, Illinois law requires that you deliver a copy of your claim to the personal representative of the estate. This can usually be done by certified mail or personal service. Keep proof that you sent it a mail receipt or signed acknowledgment. Without proof of service, your claim could be rejected on a technicality.

What Are the Deadlines for Filing?

Illinois gives creditors specific windows to file, and they're strict:

Claims based on notice published in a newspaper: You have six months from the date of first publication.
Claims where you received direct written notice: You have three months from the date you received that notice, or six months from the date of first publication whichever is later.
Claims where no notice was given and no estate was opened within the first year after death: You may petition to open an estate yourself and file within the allowed period after that.

These deadlines are governed by 755 ILCS 5/18-3. If you miss the deadline, the court will almost certainly bar your claim permanently. For a full breakdown, see our article on Illinois probate creditor claim deadlines.

What Happens After You File Your Claim?

Once your claim is filed and served, several things can happen:

The executor pays it. If the estate has sufficient assets and the claim appears valid, the executor may approve and pay it without dispute.
The executor objects. The personal representative has 60 days after your claim is served (or 42 days after it's allowed by the court) to file a formal objection. If that happens, the court will schedule a hearing.
The claim is disallowed by the court. If the court determines your claim lacks merit, is unsupported, or was filed late, it will be denied.

If the executor files an objection to your claim, you'll need to prepare for a court hearing. Our guide on how creditor claim objections work during Illinois probate administration explains what to expect in that process.

What Happens If You Miss the Filing Deadline?

Missing the deadline is one of the most common and most costly mistakes a creditor can make. In most situations, a late claim is permanently barred. The estate can be closed and distributed to heirs without paying you, and you'll have no further recourse against the estate.

There are very narrow exceptions. If you can show that you never received notice and the executor failed to make a reasonable effort to notify known creditors, the court may allow a late filing. But this is rare and fact-specific. You can read more about what happens in these situations in our article on what happens when a creditor misses the claim deadline in Illinois estate proceedings.

Common Mistakes Creditor Claimants Make

These errors cost creditors money every year in Illinois probate courts:

Filing late. The six-month window is firm. Don't assume you'll get an extension.
Filing in the wrong county. The claim must go to the county where the estate is being probated not where the creditor lives or where the debt was created.
Submitting vague or incomplete claims. "She owed me $10,000" with no documentation won't hold up. Include invoices, contracts, account records, or any written evidence of the debt.
Forgetting to serve the executor. Filing with the court is not enough. You must also send a copy to the personal representative and keep proof.
Not following up. After filing, watch for objections. If the executor disputes your claim and you don't show up to the hearing, the court will likely disallow it.
Assuming secured debt is handled separately. Even if your debt is secured by collateral, you may still need to file a probate claim depending on the circumstances.

Tips to Strengthen Your Creditor Claim

File as early as possible. Don't wait until the last week of the deadline window. Filing early gives you time to correct any issues.
Keep copies of everything. Your filed claim, your proof of service, your supporting documents keep organized copies of all of it.
Be specific. State the exact amount, the date the debt was incurred, the basis for the obligation, and attach documentation.
Check the court docket. Confirm the case number, the executor's name, and the status of the estate before filing.
Consult a probate attorney if the amount is significant. For claims over a few thousand dollars, professional legal help can protect your interests and reduce procedural mistakes. The Illinois State Bar Association's lawyer finder can help you locate a probate attorney in your county.

Quick Checklist: Filing a Creditor Claim in Illinois Probate Court

Confirm that a probate estate has been opened and identify the correct county and case number
Check the publication date of creditor notice or the date you received direct notice
Calculate your filing deadline (6 months from publication or 3 months from direct notice, whichever is later)
Draft your claim in writing with the amount, basis, and supporting documents
File the original claim with the Clerk of the Circuit Court in the correct county
Pay the filing fee
Serve a copy of the filed claim on the executor or administrator
Keep proof of service and copies of all filed documents
Monitor the case for any objections and attend any scheduled hearings

For a more complete walkthrough of the full process and your options, see our detailed page on how to file a creditor claim in Illinois probate court.