More details about how to claim rebate checks:

For those who have filed state income taxes and claimed a property tax credit for 2021 and are not claimed as a dependent on another return, nothing additional is needed to receive the property and income tax rebates. Payments will be automatic.

Taxpayers who did not file or are not required to file their 2021 IL-1040 individual income tax returns but want to only claim the individual income tax rebate must file Form IL-1040, including Schedule IL-E/EIC, Illinois Exemption and Earned Income Credit, to report any eligible dependents.

Taxpayers who did not file or are not required to file their 2021 IL-1040 individual income tax returns but want to claim both the property tax and individual income tax rebates must file Form IL-1040, including Schedule ICR, Illinois Credits, and Schedule IL-E/EIC, Illinois Exemption and Earned Income Credit, to report any eligible dependents.

Taxpayers who only want to claim the property tax rebate or did not report their property tax information on their 2021 IL-1040 individual income tax return have the option to fill out Form IL-1040-PTR either electronically, or by filling out a paper form and mailing it to IDOR. Form IL-1040-PTR, the Property Tax Rebate Form, is available on IDOR's website at tax.illinois.gov/rebates .

Taxpayers eligible for both rebates will receive one payment. Rebates will be sent automatically using the same method original refunds were transmitted if they were sent directly to the taxpayer by the State of Illinois.