US IRS rules, regulations and laws, for US Citizens, Americans, green card holders, and nonresidents living abroad or moving to the US or out of the US.... valuable information on IRS rules concerning U.S. expatriates and their tax returns, and tax planning.... by an experienced International Tax Attorney
US Expatriates - Every Resource You Need to Know about filing Taxes When Living Abroad
If you are a U.S. citizen or resident alien, the rules for filing income, estate, and gift tax returns and paying estimated tax are generally the same whether you are in the United States or abroad. Your worldwide income is subject to U.S. income tax, regardless of where you reside.
When to File
If you are a U.S. citizen or resident alien residing overseas, or are in the military on duty outside the U.S., on the regular due date of your return, you are allowed an automatic 2-month extension to file your return without requesting an extension. For a calendar year return, the automatic 2-month extension is to June 15. Note that you must pay any tax due by April 15 or interest will be charged starting from April 15.
Where to File
If you are a U.S. citizen or resident alien (including a green card holder) and you live in a foreign country, mail your U.S. tax return to:
Department of the Treasury Internal Revenue Service Center Austin, TX 73301-0215 USA