1.    January 15, 2025

4th Quarter 2025 Estimated Tax Payment Due: If you make estimated tax payments, the final installment for 2025 is due on this date.

2.   January 31, 2025

W-2 Forms Due to Employees: Employers must provide W-2 forms to their employees by this date.
1099 Forms Due to Recipients: Businesses must send 1099 forms to recipients by this date.

3.   February 15, 2025

W-4 Forms: Employees who claimed exemption from withholding in 2025 must file a new W-4 form for 2026.

4.   March 15, 2025

S-Corporation and Partnership Tax Returns Due: This is the deadline for filing Forms 1120S and 1065 or requesting a 6-month extension.

5.    April 15, 2025

Individual Tax Returns Due: File your 2025 Form 1040 or request an automatic extension.
First Quarter 2025 Estimated Tax Payment Due: For those making estimated tax payments, the first installment for 2026 is due on April 15th, 2026.
C-Corporation Tax Returns Due: File Form 1120 or request an automatic extension.
Last Day to Make 2024 IRA Contributions: The deadline for making contributions to your IRA for 2025 is April 15th, 2026

6.    June 16, 2026

Second Quarter 2026 Estimated Tax Payment Due: The second installment for 2026 estimated tax is due.

7.    September 15, 2026

Third Quarter 2026 Estimated Tax Payment Due: The third installment for 2026 estimated tax payment is due.
Extended Partnership and S-Corporation Tax Returns Due: If you requested an extension, this is the due date to file Forms 1065 and 1120S.

8 .   October 15, 2026

Extended Individual Tax Returns Due: If you filed for an extension, this is the final due date for your 2025 Form 1040.
Extended C-Corporation Tax Returns Due: If you filed for an extension, this is the final due date for your 2025 Form 1120.

9 .    December 31, 2026:

Last Day for 2024 Tax Moves: This is the last day to take actions like charitable contributions, retirement plan contributions, and other tax-saving moves for 2026.