Tax calendar

April 18 — Besides being the last day to file (or extend) your 2016 personal return and pay any taxes due, 2017 first quarter estimated tax payments for individuals, trusts and calendar-year corporations are due today. So are 2016 returns for trusts and calendar-year estates and C corporations, plus any final contribution you plan to make to an IRA or Education Savings Account for 2016. Simplified Employee Pension and Keogh contributions are also due today if your return isn’t being extended.

June 15 — Second quarter estimated tax payments for individuals, trusts, and calendar-year corporations are due today.