11:59 pm Filing Deadline Michigan Sales Tax – Annual Return (5081) March 1, 2021 @ 11:59 pm Filing Deadline Michigan Sales Tax – Annual Return (5081)
11:59 pm Filing Deadline for Partnership and S-Corp Pass Through Returns (1065, 1120S) March 15, 2021 @ 11:59 pm Filing Deadline for Partnership and S-Corp Pass Through Returns (1065, 1120S)
11:59 pm Filing Deadline – 2020 Partnership & S-Corporation Extensions March 15, 2021 @ 11:59 pm Filing Deadline – 2020 Partnership & S-Corporation Extensions
March 15, 2021 @ 11:59 pm Filing Deadline for Partnership and S-Corp Pass Through Returns (1065, 1120S)