- Friday, June 15 Individuals living outside the U.S.: File Form 1040. For automatic 4 month extension file Form 4868 and deposit estimated tax.
- Friday, June 15 Pay the second installment of 2018 estimated tax -Use Form 1040-ES.
- Friday, June 15 Corporations: Deposit the second installment of your 2018 estimated tax.
- Tuesday, July 31 Deposit FUTA owed through June if more than $500.
- Tuesday, July 31 File Form 941 for the second quarter.
- Friday, August 10 File Form 941 for the second quarter if you timely deposited all required payments.