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Home→Agencies→Unclaimed Property→Illinois→When someone dies

State Unclaimed Property in Illinois: when someone dies

A 3-step process for Illinois State Treasurer — Unclaimed Property (I-Cash) after a death in Illinois.

OverviewWhen someone dies

Unclaimed Property

Illinois

icash.illinoistreasurer.gov→

Administering agency

Illinois State Treasurer — Unclaimed Property (I-Cash)

Phone800-961-8303
WebsiteVisit website →

Authority

765 ILCS 1026 (Revised Uniform Unclaimed Property Act); claims 765 ILCS 1026/15-903

Verified Jul 2026

Steps to take

  1. Search icash.illinoistreasurer.gov for the deceased's name and prior addresses.
  2. File a claim through I-Cash as the estate representative or heir, providing:
    • A completed claim form (notarized if the claim exceeds $5,000, or involves a safe deposit box or securities), photo ID, and the claimant's Social Security number
    • A death certificate for the listed owner
    • Court-certified Letters of Office (dated within the last three years) if probate is open, or a small estate affidavit listing all heirs if the estate was not probated
    • Proof of the claimant's relationship to the decedent through death, birth, and/or marriage records
  3. Submit the documents by email to unclaimedproperty@illinoistreasurer.gov, through the I-Cash document upload page, or by mail; the Treasurer reviews the claim and pays the verified owner or heir.

Illinois State Treasurer — Unclaimed Property (I-Cash)

Phone: 800-961-8303

Visit the agency website →

Frequently asked questions

Search icash.illinoistreasurer.gov, then file a claim through the I-Cash portal. Along with the completed claim form, photo ID, and Social Security number every claim requires, an heir claim needs the owner's death certificate plus proof of authority — court-certified Letters of Office dated within the last three years if probate is open, or a small estate affidavit listing all heirs if the estate was not probated — and proof of relationship through death, birth, and/or marriage records.

No. The Treasurer holds unclaimed property in a custodial capacity until the rightful owner or heir has successfully claimed it, so an owner or their heirs can file a claim at any time.

Yes. The Illinois State Treasurer publishes a Small Estate Affidavit form and accepts it in place of Letters of Office. Under 755 ILCS 5/25-1, the affidavit may be used when no letters of office are outstanding, contemplated, or pending and the decedent's personal estate — excluding motor vehicles registered with the Secretary of State — does not exceed $150,000. Heirs file through the I-Cash portal with the affidavit, the death certificate, and proof of identity.

SimplyTrustSimplyTrust Editorial·Updated July 14, 2026

Sources

  • icash.illinoistreasurer.gov
  • ilga.gov

Data sourced from State Unclaimed Property in Illinois primary sources (6 pages reviewed). How we research.

Unclaimed Property

Illinois

icash.illinoistreasurer.gov→

Administering agency

Illinois State Treasurer — Unclaimed Property (I-Cash)

Phone800-961-8303
WebsiteVisit website →

Authority

765 ILCS 1026 (Revised Uniform Unclaimed Property Act); claims 765 ILCS 1026/15-903

Verified Jul 2026
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