Date
Category
June 15, 2026
Estimated Payments Deadlines
2nd Quarter Estimated Tax Payment
Estimated tax payments for the 2nd quarter of 2025 are due for C-Corporations and Individuals.
July 31, 2026
Payroll Deadlines
Q2 2025 (Form 941 Payroll)
2nd Quarter Employer's Quarterly Federal Tax Return.
September 15, 2026
Return Filing Deadlines
Extension Deadline Partn. & S-Corps.
Extended deadline for Partnerships and S-Corporations to file annual tax returns.
September 15, 2026
Estimated Payments Deadlines
3rd Quarter Estimated Tax Payment
Estimated tax payments for the 3rd quarter of 2025 are due for C-Corporations and Individuals.
October 15, 2026
Return Filing Deadlines
Extension Deadline Indiv. & C-Corps.
Extended deadline for Individuals and C-Corporations to file annual tax returns.