Internal Revenue Service
Filing Address and Deadlines
U.S. income tax returns for 2011 are due on April 17, 2012.
If you reside overseas, however, your return is due on June 15, 2012 because you are given an automatic two-month extension file. Any tax due though must be paid by April 17, 2012 to avoid being charged penalties and interest.
To request an extension to October 17, 2012, complete and mail Form 4868 before the return due date to the address designated on the form (to determine if further extensions are available, go to http://www.irs.gov/).
Please mail your return without payment to the following address:
Department of the Treasury
Internal Revenue Service Center
Austin, TX 73301-0215
USA
Please mail your return with payment to the following address:
Department of the Treasury
Internal Revenue Service Center
P.O. Box 1303
Charlotte, NC 28201-1303
USA