2026 Tax Calendar
Every federal deadline that applies to creators, solo businesses, and S-corps this year, already shifted off weekends and holidays. Miss nothing, forfeit nothing.
January 2026
Thursday, January 15, 2026
Estimated paymentsQ4 2025 estimated tax payment
Final 2025 quarterly estimated payment for individuals (Form 1040-ES). Covers income from September 1 to December 31, 2025.
Self-employed and S-corp owners
February 2026
Monday, February 2, 2026
Information returnsW-2s and 1099-NEC due
Furnish W-2s to employees and file with the SSA; furnish and file 1099-NEC for contractors paid $600 or more in 2025. Same-day deadline for both furnishing and filing.
Every business with employees or contractors
Monday, February 2, 2026
Payroll filingsQ4 2025 Form 941 and 2025 Form 940
Quarterly federal payroll return for October through December 2025, and the annual FUTA return for 2025.
Employers running payroll
March 2026
Monday, March 16, 2026
Income tax returnsS-corp and partnership returns (TY 2025)
Form 1120-S and Form 1065 for calendar-year entities, with Schedule K-1s to owners. File Form 7004 by today for a six-month extension to September 15.
S-corps and partnerships
Monday, March 16, 2026
ElectionsForm 2553 deadline for 2026 S-corp status
Existing entities electing S-corp treatment effective January 1, 2026 must file Form 2553 within 2 months and 15 days of the year start. Late elections need Rev. Proc. 2013-30 relief.
LLCs electing S-corp
Tuesday, March 31, 2026
Information returns1099 e-filing deadline (non-NEC)
Electronic filing deadline with the IRS for 1099-MISC, 1099-K, and other non-NEC information returns for 2025.
Businesses issuing 1099s
April 2026
Wednesday, April 15, 2026
Income tax returnsIndividual and C-corp returns (TY 2025) + Q1 2026 estimate
Form 1040 and Form 1120 for 2025 are due, along with any balance owed. Q1 2026 estimated payments are due the same day, and today is the last day to fund a 2025 IRA or HSA.
Everyone
Thursday, April 30, 2026
Payroll filingsQ1 2026 Form 941
Quarterly federal payroll return for January through March.
Employers running payroll
June 2026
Monday, June 15, 2026
Estimated paymentsQ2 2026 estimated tax payment
Covers income from April 1 to May 31. The short quarter surprises people every year; it is two months, not three.
Self-employed and S-corp owners
July 2026
Friday, July 31, 2026
Payroll filingsQ2 2026 Form 941
Quarterly federal payroll return for April through June.
Employers running payroll
September 2026
Tuesday, September 15, 2026
Estimated paymentsQ3 2026 estimate + extended S-corp and partnership returns
Q3 estimated payments (June 1 to August 31 income) are due, and extended Form 1120-S and Form 1065 returns for 2025 reach their final deadline.
Self-employed, S-corps, partnerships
October 2026
Thursday, October 15, 2026
Income tax returnsExtended individual and C-corp returns (TY 2025)
Final deadline for extended Form 1040 and Form 1120 returns. Extensions moved the paperwork, not the payment; interest has accrued on any unpaid balance since April.
Anyone who extended
November 2026
Monday, November 2, 2026
Payroll filingsQ3 2026 Form 941
Quarterly federal payroll return for July through September.
Employers running payroll
December 2026
Tuesday, December 15, 2026
Estimated paymentsC-corp Q4 2026 estimated payment
Calendar-year C corporations pay their fourth estimate in December, a month earlier than the individual schedule.
C corporations
January 2027
Friday, January 15, 2027
Estimated paymentsQ4 2026 estimated tax payment
Final 2026 quarterly estimated payment for individuals. Covers income from September 1 to December 31, 2026.
Self-employed and S-corp owners
Free download
2026 Tax Compliance Calendar
Enter your email and we unlock the importable calendar file: every deadline on this page as all-day events with a three-day reminder, ready for Google Calendar, Apple Calendar, or Outlook.
State deadlines are their own calendar
Five states file later than the federal April deadline, nine have no income tax at all, and every state runs its own estimated-payment portal. We keep a business-day-adjusted page for all 50 states and DC.
See your state's 2026 deadlinesOr never think about deadlines again
Amadae members do not track this calendar. Books stay current, estimates are calculated and scheduled, and returns are filed early, all handled for you.
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