By on Oct 8, 2024 in | 4 comments « All Events This event has passed. Sales & Use October 22, 2018 « Employment Sales & Use » Sales & Use (ST-1) Illinois: Business – Monthly filers required to file Form ST-1 for sales and use tax collected in September Add to calendar Google Calendar iCalendar Outlook 365 Outlook Live Details Date: October 22, 2018