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Upcoming Deadlines
January 15, 2026
2 days from now
•
2 deadlines
Estimated tax payments for the 4th quarter of 2025 are due for individuals
Estimated tax payments for the 4th quarter of 2025 are due for individuals and C-corporations
March 16, 2026
2 months from now
•
3 deadlines
Extensions due for calendar-year s-corps and calendar-year partnerships
Last day for filing income tax return for calendar-year partnership (Form 1065)
Last day for filing income tax return for calendar-year S corporation (Form 1120S)
April 15, 2026
3 months from now
•
8 deadlines
1st Quarter 2026 Estimated Tax Payment Due
C corporation Extensions Form Due for Tax Year 2025 for taxpayers with a calendar-year end
C corporations Tax Return Due for Tax Year 2025 for taxpayers with a calendar-year end
Individual Tax Return Extensions Form Due for Tax Year 2025
Individual Tax Returns Due for Tax Year 2025
Last day to make a 2025 IRA Contribution
Trust & Estate Extensions Form Due for Tax Year 2025 for entities with a calendar-year end
Trust & Estate Tax Return Due for Tax Year 2025 for entities with a calendar-year end
May 15, 2026
4 months from now
•
1 deadline
Nonprofit Tax Returns Due for Tax Year 2025 for entities with a calendar-year end
June 15, 2026
5 months from now
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1 deadline
Estimated tax payments for the 2nd quarter of 2026 are due for C-corporations and individuals
September 15, 2026
8 months from now
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2 deadlines
Estimated tax payments for the 3rd quarter of 2026 are due for C-corporations and individuals
Extended deadline for calendar-year partnerships and calendar-year S-corporations to file tax returns
September 30, 2026
8 months from now
•
1 deadline
Extended deadline for calendar-year trusts and estates to file tax returns
October 15, 2026
9 months from now
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1 deadline
Extended deadline for calendar-year end C-corporations and individuals to file tax returns
November 16, 2026
10 months from now
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1 deadline
Extended deadline for calendar-year end nonprofits to file tax returns
December 31, 2026
11 months from now
•
1 deadline
Last day to make a 529 College Savings Plan 2025 Contribution
January 15, 2027
1 year from now
•
1 deadline
Estimated tax payments for the 4th quarter of 2025 are due for individuals and C-corporations
