On Wednesday, August 20, 2025, IIT phone lines will be down for maintenance. However, you can access tax account information or ask a question online.
Marihuana Retailers Excise (MRE) Tax
Homeowner's Principal Residence Exemption
Property Tax Forfeiture and Foreclosure
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| Number | Former Number | Form Title | Instructions / Notes |
|---|---|---|---|
| 865 | L-4293 | Request for Nonconsideration of True Cash Value of Normal Repair, Replacement, and Maintenance Expenditures | |
| 4943 | Statement of Rejected Taxes |