IRS Important Dates:
- January 29, 2025 – IRS begins accepting turns
- January 15, 2025 – Fourth quarter estimated payments due for tax year 2024
- January 31, 2025 – Employers must mail W-2 forms
- April 15, 2025 – Tax Day/federal returns and payments due, final day for 401k contributions, final day to file an extension
- October 15, 2025 – Late filing deadline
Small Business |
Filing Deadline |
Extension Deadline |
Sole Proprietors |
April 15, 2025 |
Oct. 15, 2025 |
Partnerships |
March 15, 2025 |
Sept. 15, 2025 |
Multimember LLCs |
March 15, 2025 |
Sept. 15, 2025 |
S-Corps |
March 15, 2025 |
Sept. 15, 2025 |
C-Corps |
April 15, 2025 |
Oct. 15, 2025 |