In order to stay ahead of the newest IRS Deadlines, please take note of the following dates:

January 15, 2026

4th Quarter 2025 Estimated Tax Payment Due

January 26, 2026

2025 Tax Season begins. IRS begins to accept 2025 tax returns

January 31, 2026

2025 W-2, 1099-MISC, 1099-NEC Filing Deadline for Businesses
(Must provide to employee/contractor and file with IRS/SSA)

March 16, 2026

S-Corporation (1120S) Tax Returns Due for 2025 Tax Year

Partnership (1065, including multi-member LLC) Tax Returns Due for 2025 Tax Year

S-Corporation and Partnership Extension Requests Due for 2025 Tax Year

April 15, 2026

Individual (1040) Tax Returns Due for 2025 Tax Year

Trust and Estate (1041) Tax Returns Due for 2025 Tax Year

C-Corporation (1120) Tax Returns Due for 2025 Tax Year

Individual Tax Return Extension Request Due for 2025 Tax Year

Last day to make a 2025 IRA and HSA Contributions

1st Quarter 2026 Estimated Tax Payment Due

May 01, 2026

Deadline to renew your Florida formed Corporation (S-Corps, C-Corps and LLCs) or Partnership with the Florida Department of Revenue (Sunbiz.org)

June 15, 2026

2nd Quarter 2026 Estimated Tax Payment Due

September 15, 2026

S-Corporation (1120S) Extended Returns Due for 2025

Partnership (1065) Extended Returns Due for 2025

3rd Quarter 2026 Estimated Tax Payment Due

October 15, 2026

Extended 2025 Individual Tax Returns Due

Extended 2025 C-Corporation Tax Returns Due

January 15, 2027

4th Quarter 2026 Estimated Tax Payment Due