03/16/2026
π¨ BUSINESS OWNERS: Business tax return deadline is TODAY (March 16, 2026).
If your S-Corp (1120-S) or Partnership (1065) return isnβt ready, file an extension immediately.
β οΈ Quick reminder: An extension gives you more time to FILE β not more time to PAY.
Hereβs the rest of the 2026 deadline map (save this):
π§Ύ Individual Taxes (Form 1040)
β
April 15, 2026 β File your 1040 or file an extension
β
October 15, 2026 β Deadline if you filed an extension
π° Estimated Taxes (Self-employed / 1099 / business owners)
β’ April 15, 2026
β’ June 15, 2026
β’ September 15, 2026
β’ January 15, 2027
π’ C-Corp Deadlines (Form 1120)
β’ April 15, 2026 β C-Corp return due
β’ October 15, 2026 β Extended C-Corp return due
β° Missing deadlines can mean penalties + interest β set reminders now.