Important Tax Dates to Remember

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At some point every year, Americans begin scrambling as they try to figure out what forms they must file and when they must file them in the new tax season. The official deadline to file your federal income tax return for 2018 is April 15 but there are also many other tax deadlines throughout the year you should bear in mind.

The Internal Revenue Service has already begun processing tax returns.  Here are some other important deadlines to keep in mind.

Deadlines in Calendar Year 2019 for 2018 Returns

Estimated tax payments for the 2018 Tax Year (IRS Form 1040-ES)

  • These were due on April 17, June 15, Sept. 17, 2018 and Jan. 15, 2019.

Estimated tax payments for the 2019 Tax Year (IRS Form 1040-ES)

  • April 15, 2019
  • June 17, 2019
  • Sept. 16, 2019
  • Jan. 15, 2020

Partnership returns (IRS Form 1065):

  • March 15, 2019 
  • Extended deadline is Sept. 16, 2019

Estates and Trusts income tax returns (IRS Form 1041):

  • April 15, 2019
  • Extended deadline is Sept. 30, 2019

C-corporation income tax returns (IRS Form 1120):

  • April 15, 2019 for C corporations that operate on a calendar year
  • Extended deadline is Oct. 15, 2019
  • The deadline for C corp returns is the 15th day of the fourth month following the end of the corporation’s fiscal year if the corporation is on a fiscal rather than a calendar year. 

S-corporation returns (IRS Form 1120-S):

  • March 15, 2019 for corporations on a calendar year
  • Extended deadline is Sept. 15, 2019
  • The deadline for S corp and partnership returns is the 15th day of the third month following the end of the fiscal year if they are on a fiscal year rather than a calendar year.

Foreign bank account reports (IRS FinCen Form 114):

  • April 15, 2019
  • Extended deadline with Form 1040 is Oct. 15, 2019

We hope you find this list helpful.  As you gather all of your tax related information to meet with your tax professional, we encourage using this opportunity to knock out some additional “Financial Spring Cleaning.” If you have any questions during this time, please email us at  We look forward to hearing from you.

The information has been obtained from sources considered to be reliable, but we do not guarantee that the foregoing material is accurate or complete. Raymond James does not provide tax or legal services.  Please discuss these matters with the appropriate professional.