📅 April 15 · Form 1120
C-Corporation Tax Return Due
C-Corp tax returns are due April 15 (or the 15th of the 4th month after fiscal year end). Unlike S-Corps, C-Corps pay their own taxes at the corporate rate.
Who: C-Corporations (calendar year)
⚠️ Penalty for Missing This Deadline
5% per month on unpaid tax. Minimum $485 penalty if filed more than 60 days late.
Tips to Stay on Track
1
File Form 7004 for automatic 6-month extension
2
Estimated corporate tax payments are due quarterly
3
Verify all shareholder distributions are properly documented
Other Tax Deadlines
Related Resources
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