Sales Tax Rate Changes, Eff. July 1 (Informational Bulletin FY 2021-23) Illinois Department of Revenue sent this bulletin at 06/08/2021 02:00 PM CDT View as a webpage / Share IDOR News & Updates - June 8, 2021 Sales Tax Rate Change SummaryEffective July 1, 2021 Effective July 1, 2021, certain taxing jurisdictions have imposed a local salestax or changed their local sales tax rate on general merchandise sales. Read Informational Bulletin FY 2021-23 for more information. To read other Informational Bulletins and much more, visit our website.