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C -corporation Tax Returns

April 15

C- corporation income tax returns are due on April 15, 2021.
The extended deadline is Oct. 15, 2021.

The deadline for C corp returns is the 15th day of the fourth month following the end of the corporation’s fiscal year if the corporation operates on a fiscal, rather than a calendar year.

Form 1120 instructions and Form 1120

Details

Date:
April 15