Tax Year 2016 Calendar: Important Dates and Deadlines
Unless otherwise indicated, all deadlines are at 11:59:59 P.M. (one second before midnight) local time.
See also IRS Publication 509.
November 1, 2016
- Open enrollment for tax year 2017 begins at the Health Insurance Marketplace.
- The open enrollment period for tax year 2016 ended on January 31, 2016.
January 2, 2017
- The Intuit Electronic Filing Center begins accepting and holding ("stockpiling") 2016 tax returns that are final and able to be e-filed.
- The IRS starts processing stockpiled returns on January 19 (a few are processed up to a week earlier for testing purposes).
January 16, 2017
- Due date for fourth installment of 2016 estimated tax payments.
January 20, 2017
- 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 20.
January 31, 2017
- Open enrollment for tax year 2017 ends at the Health Insurance Marketplace.
March 15, 2017
- Deadline for filing a 2016 corporation or S corporation return or extension.
- Deadline for filing a Partnership return.
April 18, 2017 –
- Deadline for filing a 2016 personal, or calendar year estates/trusts tax returns or extension.
- The return or extension must be postmarked or transmitted for e-filing by Tuesday, April 18, 2017
- To avoid late payment penalties and interest, any additional taxes you owe must be paid by this date even if you filed an extension.
- Deadline for filing a C-Corp in a calender year.
- Due date for first installment of 2017 estimated tax payments.
April 23, 2017
- Deadline for resubmitting or paper-filing a rejected federal return that was originally e-filed by the April 18 deadline if you did not file an extension.
- Note: Although the last day to resubmit a rejected return is October 21, the April 23 deadline applies to taxpayers who owe taxes and want to avoid the late-filing penalty.
- Deadline for resubmitting or paper-filing a rejected extension that was originally e-filed by the April 18 deadline.
June 15, 2017
- Deadline for filing a 2016 personal return for U.S. citizens or residents living and working abroad, including military duty.
- Due date for second installment of 2017 estimated tax payments.
September 15, 2017
- Final deadline to file your 2016 corporation, S corporation, or partnership tax return if you filed an extension.
- Due date for third installment of 2017 estimated tax payments.
September 30, 2017
- Final deadline to file your 2016 calendar-year estate/trust tax return if you filed an extension.
October 16, 2017
- Final deadline to file your 2016 personal tax return if you filed an extension.
October 21, 2017
- Final deadline to resubmit a rejected return that was originally e-filed on or before October 16.
- If you're expecting a refund and miss the October 21 final cutoff date, you have until April 15, 2020 (October 15, 2020 if you filed an extension) to file a paper return and claim your 2016 refund.