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2026 Tax Filing Calendar

Key federal filing and payment deadlines for individuals, businesses, and employers, based on IRS Publication 509, Tax Calendars (2026). Dates that would otherwise fall on a weekend or federal holiday are shown on the next business day, per IRS rules.

A note on this calendar: these are general federal deadlines that apply to most taxpayers. Your specific due dates can differ based on your entity type, fiscal year, disaster relief extensions, or state filing requirements. Recent tax legislation (the One Big Beautiful Bill Act, enacted July 2025) changed a number of federal tax provisions — see IRS.gov/OBBB for details. Always confirm your exact deadlines with our office or IRS.gov.
DateApplies ToWhat's Due
Jan 15, 2026Thursday Individuals 4th-quarter 2025 estimated tax payment due (Form 1040-ES).
Feb 2, 2026Monday Employers Furnish 2025 Form W-2 to employees and Form 1099-NEC to contractors; file W-2s/1099-NECs with the SSA/IRS; Form 940 (FUTA) annual return and Form 941 for Q4 2025 due. (Normally Jan 31 — shifted because Jan 31, 2026 falls on a Saturday.)
Mar 16, 2026Monday Partnerships & S-Corps Form 1065 (partnerships) and Form 1120-S (S-corps) due, or file Form 7004 for an automatic 6-month extension. Schedule K-1s due to partners/shareholders. (Normally Mar 15 — shifted because it falls on a Sunday.)
Apr 15, 2026Wednesday Individuals C-Corps Individual Form 1040 due, or file Form 4868 for a 6-month extension; 1st-quarter 2026 estimated tax due; last day for 2025 IRA/HSA contributions. C-corporation Form 1120 due, or file Form 7004 for an extension; Q1 2026 corporate estimated tax due.
Apr 30, 2026Thursday Employers Form 941 for Q1 2026 due.
Jun 15, 2026Monday Individuals C-Corps 2nd-quarter 2026 estimated tax payment due for individuals and C-corporations.
Jul 31, 2026Friday Employers Form 941 for Q2 2026 due.
Sep 15, 2026Tuesday Individuals C-Corps & S-Corps 3rd-quarter 2026 estimated tax due for individuals and C-corporations. Extended Form 1065/1120-S returns due for partnerships and S-corps that filed for an extension in March.
Oct 15, 2026Thursday Individuals C-Corps Extended individual Form 1040 due; extended C-corporation Form 1120 due (for returns that filed for an extension in April).
Nov 2, 2026Monday Employers Form 941 for Q3 2026 due. (Normally Oct 31 — shifted because it falls on a Saturday.)
Jan 15, 2027Friday Individuals 4th-quarter 2026 estimated tax payment due.
Feb 1, 2027Monday Employers Furnish 2026 Form W-2 and Form 1099-NEC; file with SSA/IRS; Form 940 and Q4 2026 Form 941 due. (Normally Jan 31 — shifted because it falls on a Sunday; confirm against the IRS's 2027 tax calendar once published.)

This calendar is provided for general planning purposes and is not a substitute for personalized tax advice. Deadlines shown reflect calendar-year filers; fiscal-year taxpayers, disaster-area extensions, and certain international or specialty filings follow different schedules. Source: IRS Publication 509 (2026), Tax Calendars. Contact our office to confirm the deadlines that apply to your specific situation.