Welcome to the Illinois State Treasurer's Unclaimed Property Page. The State Treasurer is holding 2.5 billion dollars in unclaimed funds for Illinoisans.The State holds these lost funds until they are claimed. The Instructions for Cash and Securities Form has been changed, please review the new PDF found here: IL_Reporting_Instructions.pdf. Each unclaimed property claim requires a minimum of a completed and signed claim form, a copy of photo identification and social security number. Complete this page if you are applying for cash or medical benefits and anyone listed on this application is offered health coverage from a job. We will work to return unclaimed property no matter how long it takes. STEP 1: Review your claimed properties. The checks are part of Illinois' "Enhanced Money Match" program that automatically sends unclaimed money to people in the state. Search your name on our online I-CASH database which is updated weekly.