Probate Notice to Creditors and Claim Deadlines in Illinois

At a glance

Requirements one by one

Publish and send the same deadline notice

Section 18-3 places both tasks on the representative. Publication runs once a week for three successive weeks in a newspaper published in the county where the estate is administered. The representative also mails or delivers notice to each creditor whose name and post-office address are known or reasonably ascertainable, unless the claim has already been allowed or disallowed.

The notice states the death, the representative's and attorney's names and addresses, the claim date, and the warning that a claim filed after that date is barred. That stated date cannot be earlier than the later of six months after first publication and three months after mailing or delivery. Section 18-3 does not state a separate number of days after letters within which publication must begin. Proof of publication goes to the court clerk.

Use reasonable care to identify creditors

The operative recipient standard in § 18-3 is “known to or reasonably ascertainable.” For an independent estate, § 28-11(b)(3) makes the practical search standard explicit at closing: the representative's verified report must state that “reasonable care was used to determine the creditors of the decedent” and that all known creditors received the required notice. Neither section supplies a statewide checklist of records or inquiries.

File a written claim with the representative, court, or both

Sections 18-1 and 18-2 allow filing with the representative, the court, or both. The claim must be in writing and give enough information to notify the representative of the claim's nature or other relief sought. The statute does not require a general verification, itemized amount, or attachment in these two sections.

If the creditor files with the court, § 18-1(b) requires mailing or delivering a copy within 10 days to each active representative and the representative's attorney of record, followed by proof filed with the court. The statute expressly says failure to send the copies or file proof does not invalidate the court filing.

Track the notice bar, disallowance bar, and death bar separately

Section 18-12 makes the claim date in a compliant § 18-3 notice a claimant-facing bar. A creditor who was directly notified and an unknown or unascertainable creditor governed by publication use the same stated date, but that date is calculated from different notice events.

A claim filed only with the representative has another possible clock. Under § 18-11(b), the representative may disallow it by mail or delivery and give the creditor at least two months to file with the court. Missing that court date bars the claim under § 18-12.

Even if neither earlier bar applies, § 18-12(b) generally bars covered claims two years after death whether or not anyone opened an estate or received letters. Article XVIII states no general extension or separate no-known-asset procedure.

Apply the express exceptions narrowly

Section 18-12 excludes administration expenses and the surviving spouse's or child's award from its claim bar. It also preserves an action to establish the decedent's liability only to the extent liability insurance protects the estate. Section 18-10 classifies federal debts and Illinois or local-government debts; it does not give those tax and governmental debts a separate Article XVIII exception from the notice and outside bars.

The complete current Article XVIII text states no separate secured-lien exception. Section 18-12(d) is not a late-claim cure: it permits a claim that is still unbarred to reach undistributed estate assets and, within its formula, a distributee's share.

What trips people up

The direct-notice period is not simply three months from delivery. The notice date must be the later of the six-month publication date and the three-month direct-notice date.

Filing with the representative is valid, but it leaves the claim exposed to a later disallowance notice requiring a court filing within at least two months.

The 10-day copy-and-proof requirement after court filing is mandatory language, yet § 18-1 expressly preserves the validity of the filing when that follow-up is missed.

Common questions

Must every claim be filed with the court?

No. Section 18-1 permits filing with the representative, the court, or both. A representative-filed claim may later need a court filing if the representative serves a compliant disallowance notice.

Does publication replace notice to a creditor the representative can identify?

No. Section 18-3 separately requires mailing or delivery to creditors whose names and post-office addresses are known or reasonably ascertainable.

Can an insured-liability case continue without a timely estate claim?

Section 18-12(c) says the claim bar does not block an action to establish the decedent's liability to the extent the estate is protected by liability insurance. It does not create general recovery against uninsured estate assets.

What if the estate was never opened?

Section 18-12(b)'s two-year outside bar applies whether or not letters of office were issued.

Statutes and sources

• 755 Ill. Comp. Stat. 5/18-1 to 18-3 and 18-10 to 18-12 — claim filing and form, publication and direct notice, notice and disallowance bars, the two-year outside bar, classification, insurance, and unbarred-claim recovery. Illinois General Assembly: https://www.ilga.gov/legislation/ILCS/details?MajorTopic=RIGHTS%20AND%20REMEDIES&Chapter=ESTATES&ActName=Probate%20Act%20of%201975.&ActID=2104&ChapterID=60&ChapAct=755+ILCS+5%2F&SeqStart=23200000&SeqEnd=24900000&Print=True (accessed 2026-08-12).
• 755 Ill. Comp. Stat. 5/28-11(b)(3) — independent-closing certification of publication, reasonable care, and notice to all known creditors. Illinois General Assembly: https://www.ilga.gov/documents/legislation/ilcs/documents/075500050K28-11.htm (accessed 2026-08-12).