April 18, 2017 @ 12:00 am - April 19, 2017 @ 12:00 am C corporations: File Form 1120 for calendar year and pay any tax due. For automatic 6-month extension, file Form 7004 and deposit estimated tax.
April 18, 2017 @ 12:00 am - April 19, 2017 @ 12:00 am Individuals: File Form 1040, 1040A, or 1040EZ. For automatic 6-month extension file Form 4868 and deposit estimated tax. Pay the first installment of 2017 estimated tax – Use Form 1040-ES.
April 18, 2017 @ 12:00 am - April 19, 2017 @ 12:00 am Corporations: File Form 1120 for calendar year and pay any tax due. For automatic 5-month extension, file Form 7004 and deposit estimated tax.