When are corporate tax returns due with extension

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  • When is tax day due

    • Irs due date postmarked or received.

    When to file

    Calendar year filers (most common)

    File on: April 15, 2025

    Fiscal year filers

    File on: The fourth month after your fiscal year ends, day 15.

    If day 15 falls on a Saturday, Sunday or legal holiday, the due date is delayed until the next business day.

    When are taxes due with extension

  • When is tax season 2025
  • Irs due date postmarked or received
  • First day you can submit tax returns for the previous year
  • Deadline for employers to mail w-2s to their employees

    • Your return is considered filed on time if your envelope is properly addressed, postmarked and deposited in the mail by the due date.

    See Publication 509, Tax Calendars for information on:

    • tax filing deadlines
    • filing, paying and other tax action due dates

    Need more time?

    If you can't file by the due date of your return, you can request an automatic 6-month extension of time to file.

    Please be aware that:

    Haven't filed your tax return lately?

    If you haven't filed your federal income tax return for this year or for prior years, you should file your return as soon as possible. See what to do if you haven't filed your tax return.

    Members of the military

    Special rules may apply if you served or are serving in the Armed Forces in a combat zone or a contingency operation or become hospitali

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