Individuals
If you’re a U.S. citizen or resident alien living and working (or on military duty) outside the United States and Puerto Rico, file Form 1040 and pay any tax, interest, and penalties due. Make a payment of your 2019 estimated tax if you’re not paying your income tax for the year through withholding.

Corporations 
Deposit the second installment of estimated income tax for 2019.

Employees who work for tips
If you received $20 or more in tips during June, report them to your employer.

Employees who work for tips
If you received $20 or more in tips during July, report them to your employer.

Employees who work for tips
If you received $20 or more in tips during August, report them to your employer.

Individuals
Make a payment of your 2019 estimated tax if you’re not paying your income tax for the year through withholding.

Partnerships
File a 2018 calendar year return.

S corporations
File a 2018 calendar year income tax return and pay any tax, interest, and penalties due.

Corporations
Deposit the third installment of estimated income tax for 2019.

Individuals
If you have an automatic 6-month extension to file your income tax return for 2018, file Form 1040 and pay any tax, interest, and penalties due.

Corporations
File a 2018 calendar year income tax return and pay any tax, interest, and penalties due.