Taxpayers living and working outside the United States must file their 2021 federal income tax return by Wednesday, June 15. This deadline applies to both U.S. citizens and resident aliens abroad, including those with dual citizenship.
An automatic two-month deadline extension—until June 15—is normally granted for those overseas. Anyone who qualifies gets the extra time, nothing needs to be filed.
A taxpayer qualifies for the special June 15 filing deadline if:
Both their tax home and abode are outside the United States or Puerto Rico, or
They are serving in the military outside the U.S. and Puerto Rico on the regular due date of their tax return.
A statement to the Form 1040 must be attached indicating which of these two situations applies.
Extra time is available for those who cannot meet the June 15 date but must be requested by filing Form 4868, 'Application for Automatic Extension of Time to File U.S. Individual Income Tax Return'. This will extend the filing until October 17 which is the final due date for all US taxpayers.