You must file your state sales tax tax increment financing (TIF) business address list information with the department by July 31 of each year. It should contain the tax number, business name, and address of retailers who operated within the state sales tax boundary of the TIF from the previous July 1 through June 30 fiscal year.
Mail this information to:
Local Tax Allocation Division, MC 3-500
Illinois Department of Revenue
101 West Jefferson Street
Springfield, IL 62702