April 15, 2021 @ 11:59 pm Filing Deadline for Estate and Trust Tax Returns (1041) NOTE: With Calendar Year End
April 20, 2021 @ 11:59 pm Filing Deadline-Quarterly (Q1) & Monthly Michigan Sales, Use, and Withholding Tax (5080)
July 15, 2021 @ 11:59 pm Filing Deadline – Extended 2020 Estate & Trust (1041) NOTE: Calendar Year End
July 20, 2021 @ 11:59 pm Filing Deadline-Quarterly (Q2) & Monthly Michigan Sales, Use, and Withholding Tax (5080)
September 15, 2021 @ 11:59 pm Filing Deadline – Extended 2020 Partnership & S-Corporation (1065, 1120-S)
