Below is a general overview of key due dates for the returns filed. Extension dates assume the timely filing of an extension request.
Due Dates:
Form 1065 (Partnerships) - March 15th after the end of its tax year.
Form 1120S (S Corporations) - March 15th after the end of its tax year.
Form 1041 (Estates & Trust) - April 15th after end of its tax year.
Form 1040 (Individuals) - April 15th after the end of the tax year.
Form 1120 (C Corporations - December fiscal year year end) - April 15th after the end of its tax year
Form 1120 (C Corporations - June fiscal year end) - 3rd month after the end of its tax year
Form 1120 (C Corporations - fiscal year end other than June) - 4th month after the end of its tax year
Form 990N, 990EZ, 990, 990PF (Tax-exempt organizations - Calendar Year) - May 15th after the end of its tax year
Form 990N, 990EZ, 990, 990PF (Tax-exempt organizations - fiscal year end) - 5th month after the end of its tax year
Extended Due Dates:
Form 1065 (Partnerships) - September 15th after the end of its tax year.
Form 1120S (S Corporations) - September 15th after the end of its tax year.
Form 1041 (Estates & Trust) - September 30th after end of its tax year.
Form 1040 (Individuals) - October 15th after the end of the tax year.
Form 1120 (C Corporations - December fiscal year year end) - October 15th after the end of its tax year
Form 1120 (C Corporations - June fiscal year end) - April 15th after the end of its tax year
Form 1120 (C Corporations - fiscal year end other than June) - 6th month after the end of its tax year
Form 990N, 990EZ, 990, 990PF (Tax-exempt organizations - Calendar Year) - November 15th after the end of its tax year
Form 990N, 990EZ, 990, 990PF (Tax-exempt organizations - fiscal year end) - 6th month after the end of its tax year
Note:
If a due date falls on a weekend or holiday, it is typically moved to the next business day.
Deadlines may vary based on IRS updates and specific circumstances, such as tax relief in disaster situations.