Loading view. Views Navigation Event Views Navigation List List Month Day Today 8/1/2026 August 1, 2026 - 12/15/2026 December 15, 2026 Select date. August 2026 Sat 15 August 15, 2026 Event Series Texas Franchise due if extension was filed – consult with your DP tax accountant Texas Franchise due if extension was filed – consult with your DP tax accountant September 2026 Tue 15 September 15, 2026 Event Series Forms 1065 & 1120S (Calendar Year) if extension was filed Forms 1065 & 1120S (Calendar Year) if extension was filed Tue 15 September 15, 2026 Event Series Form 1040ES – 3rd Qtr Form 1040ES – 3rd Qtr Tue 15 September 15, 2026 Event Series Form 1041ES – 3rd Qtr Form 1041ES – 3rd Qtr Tue 15 September 15, 2026 Event Series Form 1120ES – 3rd Qtr Form 1120ES – 3rd Qtr Wed 30 September 30, 2026 Event Series Form 1041 if extension filed Form 1041 if extension filed October 2026 Thu 15 October 15, 2026 Event Series Forms 1040, 1120, FinCen and 3520 if extension filed Forms 1040, 1120, FinCen and 3520 if extension filed Fri 30 October 30, 2026 Event Series 3rd Qtr Payroll 3rd Qtr Payroll Sat 31 October 31, 2026 Event Series Employee Benefits Plans Form 5500 due (if extension filed) Employee Benefits Plans Form 5500 due (if extension filed) November 2026 Sun 15 November 15, 2026 Event Series Texas Franchise final due date if extension filed Texas Franchise final due date if extension filed Sun 15 November 15, 2026 Event Series Form 990 if extension filed Form 990 if extension filed December 2026 Tue 15 December 15, 2026 Event Series Form 1120ES – 4th Qtr Form 1120ES – 4th Qtr Previous Events Today Next Events Subscribe to calendar Google Calendar iCalendar Outlook 365 Outlook Live Export .ics file Export Outlook .ics file
August 15, 2026 Event Series Texas Franchise due if extension was filed – consult with your DP tax accountant Texas Franchise due if extension was filed – consult with your DP tax accountant
September 15, 2026 Event Series Forms 1065 & 1120S (Calendar Year) if extension was filed Forms 1065 & 1120S (Calendar Year) if extension was filed
October 15, 2026 Event Series Forms 1040, 1120, FinCen and 3520 if extension filed Forms 1040, 1120, FinCen and 3520 if extension filed
October 31, 2026 Event Series Employee Benefits Plans Form 5500 due (if extension filed) Employee Benefits Plans Form 5500 due (if extension filed)
November 15, 2026 Event Series Texas Franchise final due date if extension filed Texas Franchise final due date if extension filed
