The Personal Property Lease Transaction Tax applies to businesses or individuals that either are a lessor or lessee of personal property used in Chicago. Chicago has a different approach to these services and products and considers SaaS a lease of personal property.You must submit Form ST-201, Rental Purchase Agreement Occupation Tax Return, to report and pay the Rental Purchase Agreement Occupation Tax. Receipts for leases or rentals of items of tangible personal property are reported on Form ST-1, Sales and Use Tax and E911 Surcharge Return. In Chicago, standard lease agreements are made up of many parts that all need to comply with local ordinances and protect you from legal issues. However, the city of Chicago takes a different approach and regards SaaS as a taxable lease of personal property rather than a service.