IRS
Filing Address and Deadlines
U.S. income tax returns for 2007 are due on April 15, 2008.
If you reside overseas, however, your return is due on June 16, 2008 because you are given an automatic two-month extension file. Any tax due though must be paid by April 15, 2008 to avoid being charged penalties and interest.
To request an extension to October 15, 2008, 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 www.irs.gov).
Please mail your return to the following address:
Department of the Treasury
Internal Revenue Service Center
Austin, TX 73301-0215
USA