The Personal Property Lease Transaction Tax applies to businesses or individuals that either are a lessor or lessee of personal property used in Chicago. Please use this form only if you are a sole proprietor registering for a Chicago business tax and you are not required to obtain a Chicago business license.Complete Form PTAX-203-B, Illinois Real Estate Transfer Declaration Supplemental Form B. 11 Full actual consideration. We assist property owners who wish to submit information for accurate valuations, apply for a tax incentive, and more. Fritz Kaegi, Cook County Assessor. The Portal consolidates information and delivers Cook County taxpayers a one-stop customer service website. A business in Illinois is subject to the Illinois corporation franchise tax, personal property replacement tax, and corporate income taxes. To pay your Property Taxes, please click below to be taken to the website of the Cook County Treasurer. Illinois, tax "personal property" like cars, boats and business equipment. The 1970 Illinois constitution banned personal property taxes.