TurboTax FAQ
TurboTax FAQ
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Tax Year 2018 Calendar: Important Dates and Deadlines

Tax Forms Availability – See Related Information below for info on when specific IRS and state tax forms will be available.

November 1, 2018

  • Open enrollment for tax year 2019 begins at the Health Insurance Marketplace.
    • The open enrollment period for tax year 2018 ended on December 15, 2017.

December 15, 2018

January 4, 2019

  • The Intuit Electronic Filing Center begins accepting and holding ("stockpiling") 2018 tax returns that are final and able to be e-filed.
  • The IRS starts processing stockpiled returns on January 28, 2019. A few returns will be processed up to a week before this date for testing purposes.
    • If your return is among those that the IRS processes early as part of its testing, your tax refund (if any) won't be processed until after January 28.

January 15, 2019

  • Due date for fourth installment of 2018 estimated tax payments.

January 28, 2019

  • The IRS starts processing previously stockpiled returns on a first-in, first-out basis.
  • The IRS will run a small number of stockpiled returns through their systems up to a week before this date for testing purposes.
    • If yours is one of them, please note that your tax refund (if any) will not be processed until after January 28.

March 15, 2019

  • Deadline for filing an S Corporation or Partnership return or extension.

April 15, 2019

  • Deadline for filing a 2018 personal or calendar year estates/trusts tax returns or extension.
    • Because of the Patriots’ Day holiday on April 15 in Maine and Massachusetts and the Emancipation Day holiday on April 16 in the District of Columbia, taxpayers who live in Maine or Massachusetts have until April 17, 2019 to file their returns.
    • The return or extension must be postmarked or transmitted for e-filing by Monday, April 15, 2019
      • If you owe taxes:To avoid late payment penalties and interest, any additional taxes you owe must be paid by this date even if you filed an extension.
      • If you’re expecting a refund:If you missed the April 15 filing deadline, you have until April 14, 2022 to file and still receive your refund. After that date, any refund would be forfeited to the Department of the Treasury.
  • Due date for first installment of 2019 estimated tax payments.
  • Deadline for filing a 2018 Corporation return or extension.

April 20, 2019

  • Deadline for resubmitting or paper-filing a rejected federal return that was originally e-filed by the April 15 deadline if you did not file an extension.
    • April 22, 2019, if you live in Maine or Massachusetts because of Patriot's Day.
    • Note: Although the last day to resubmit a rejected return is October 20, the April 20 deadline applies to taxpayers who owe taxes and want to avoid the late-filing penalty.

June 17, 2019

  • Deadline for filing a 2018 personal return for U.S. citizens or residents living and working abroad, including military duty.
  • Due date for second installment of 2019 estimated tax payments.

September 16, 2019

  • Final deadline to file your 2018 S corporation or partnership tax return if you filed an extension.
  • Due date for third installment of 2019 estimated tax payments.

October 1, 2019

  • Final deadline to file your 2018 calendar-year estate/trust tax return if you filed an extension.

October 15, 2019

  • Final deadline to file your 2018 personal tax return if you filed an extension.

October 20, 2019

  • Final deadline to resubmit a rejected return that was originally e-filed on or before October 15.
    • If you're expecting a refund and miss the October 20 final cutoff date, you have until October 15, 2022 to file a paper return and claim your 2018 refund. After that date, any refund would be forfeited to the Department of the Treasury.

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