Substantial Presence Test

You will also be considered a U.S. resident for tax purposes if you meet the Substantial Presence Test for the calendar year. To meet this test, you must be physically present in the United States on at least:

Example

You were physically present in the United States on 120 days in each of the years 2006, 2007, and 2008. To determine if you meet the substantial presence test for 2008, count the full 120 days of presence in 2008, 40 days in 2007 (1/3 of 120), and 20 days in 2006 (1/6 of 120). Since the total for the 3-year period is only 180 days, you are not considered a resident under the substantial presence test for 2008.

Resident aliens are generally taxed in the same way as U.S. citizens. This means that their worldwide income is subject to U.S. tax and must be reported on their U.S. tax return (Form 1040, U.S. Individual Income Tax Return; Form 1040A, U.S. Individual Income Tax Return or Form 1040EZ, Income Tax Return for Single and Joint Filers with No Dependents).