You generally cannot get an extension of time to file of more than 6 months. However, if you are outside the United States and meet certain tests, you may be able to get a longer extension.

You can get an extension of time to file your tax return if you need the time to meet either the bona fide residence test or the physical presence test to qualify for either the foreign earned income exclusion or the foreign housing exclusion or deduction. The tests, the exclusions, and the deduction are explained in Foreign Earned Income Exclusion.

You should request an extension of time to file if all three of the following apply:

• You are a U.S. citizen or resident alien,
• You expect to meet either the bona fide residence test or the physical presence test, but not until after your tax return is due, and
• Your tax home is in a foreign country (or countries) throughout your period of bona fide residence or physical presence, whichever applies.

(Source: IRS) 1

• 1. IRS http://www.irs.gov/Individuals/International-Taxpayers/Extension-to-Clai...