Mo 15 Individuals living outside the U.S.: File Form 1040.
Mo 15 Individuals: Pay the second installment of 2015 estimated tax.
Mo 15 Corporations: Deposit the second installment of your 2015 estimated tax.
Fr 31 Deposit FUTA owed through June if more than $500.
Fr 31 File Form 941 for the second quarter.
Fr 31 File Form 5500 or 5500-EZ for calendar year 2014 employee benefit plan
Mo 10 File Form 941 for the second quarter if you timely deposited all required payments.