April 18, 2016 @ 12:00 am - April 19, 2016 @ 12:00 am Corporations: Deposit the first installment of your 2016 estimated tax.
April 18, 2016 @ 12:00 am - April 19, 2016 @ 12:00 am Deposit payroll tax for Mar if the monthly deposit rule applies.
April 18, 2016 @ 12:00 am - April 19, 2016 @ 12:00 am Electing Large Partnerships: File Form 1065-B calendar year return. For automatic 6-month extension File Form 7004.
