2026 Tax Deadlines
Every important tax date for 2026. Bookmark this page so you never miss a deadline.
January 15, 2026
Q4 2025 Estimated Tax Payment Due
January 31, 2026
Employers must send W-2s and 1099s
February 18, 2026
IRS Free File opens
March 15, 2026
S-Corp and Partnership returns due (Form 1120-S, 1065)
April 15, 2026
Individual tax return due (Form 1040)
April 15, 2026
Q1 2026 Estimated Tax Payment Due
April 15, 2026
Last day for IRA and HSA contributions for 2025
April 15, 2026
C-Corp returns due (Form 1120)
June 15, 2026
Q2 2026 Estimated Tax Payment Due
June 15, 2026
Expat filing deadline (automatic 2-month extension)
September 15, 2026
Q3 2026 Estimated Tax Payment Due
September 15, 2026
Extended S-Corp and Partnership returns due
October 15, 2026
Extended individual returns due (if extension filed)
October 15, 2026
Extended C-Corp returns due
January 15, 2027
Q4 2026 Estimated Tax Payment Due