You must submit Form ST-201, Rental Purchase Agreement Occupation Tax Return, to report and pay the Rental Purchase Agreement Occupation Tax. The Personal Property Lease Transaction Tax applies to businesses or individuals that either are a lessor or lessee of personal property used in Chicago.Lessors of tangible personal property under true leases in Illinois are deemed end users of the property to be leased. What do I need first? An Illinois lease agreement is a contract that defines the relationship between a property owner and their tenant. Leases running year-to-year require a. 60-day written notice. Rental Application Paperwork provided to those seeking the rental of a property for lease. A lease agreement outlines essential terms such as rent amount, payment due date, and the duration of the lease. Filling out the Illinois Residential Lease Agreement is straightforward.