April 15
- Besides being the last day to file (or extend) your 2018 personal return and pay any tax that’s due, 2019 first quarter estimated tax payments for individuals, trusts and calendar-year corporations are due today.
- Also due are 2018 returns for trusts and calendar-year estates and C corporations, FinCEN Form 114 (“Report of Foreign Bank and Financial Accounts” — though an automatic extension applies to October 15), and any final contribution you plan to make to an IRA or Education Savings Account for 2018.
- SEP and Keogh plan contributions are also due today if your return is not being extended.
May 15
- Original due date for exempt organization returns (Form 990).
June 17
- Second quarter estimated tax payments for individuals, trusts, and calendar-year corporations are due today.