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Tax deadline calendar

Key federal dates for calendar-year taxpayers. State deadlines may differ.
  1. January 15, 2027

    Fourth-quarter 2026 estimated tax payment due

    Individuals and businesses that make estimated payments.

  2. February 1, 2027

    W-2 and 1099-NEC deadline

    Employers send W-2s to employees and file with the government. Businesses send 1099-NEC to contractors and file with the IRS.

  3. March 15, 2027

    Partnership and S corporation returns due

    Forms 1065 and 1120-S for calendar-year businesses, or file an extension.

  4. April 15, 2027

    Individual and C corporation returns due

    Forms 1040 and 1120, or file an extension. First-quarter 2027 estimated payment also due. An extension to file is not an extension to pay.

  5. June 15, 2027

    Second-quarter 2027 estimated tax payment due

    Individuals and businesses that make estimated payments.

  6. September 15, 2027

    Extended partnership and S corporation returns due

    Also the third-quarter 2027 estimated payment deadline.

  7. October 15, 2027

    Extended individual and C corporation returns due

    Last day to file a 2026 Form 1040 or calendar-year Form 1120 on extension.

Deadlines that fall on a weekend or holiday move to the next business day, and the IRS sometimes extends deadlines for disaster areas. Confirm current dates at IRS.gov or ask us.

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