Tax Filing Reminders

April 15th is the due date for the following:

  • 2018 individual income tax returns
  • 2018 annual gift tax returns
  • 2018 calendar-year Estate and Trust income tax returns
  • 2018 calendar-year C corporation income tax returns
  • 2018 form 990-T for unrelated business income in a retirement account
  • First installment of 2019 individual estimated tax
  • First installment of 2019 corporate estimated tax

April 15th is also the deadline for making:

  • 2018 IRA contributions
  • 2018 Oklahoma 529 plan contributions

May 15th is the due date for:

  • Forms 990 and 990-T for 2018 calendar-year exempt organizations

June 15th is the due date for:

  • Second installment of 2019 individual estimated tax
  • Second installment of 2019 corporate estimated tax