Table of Contents
This publication is for visitors to the United States. If you have income from sources inside the United States, you may have to file a U.S. income tax return even if you are only visiting this country. For purposes of this publication, a “visitor to the United States” is a “nonresident alien.” This publication summarizes the requirements of U.S. income tax law relating to nonresident aliens and is for nonresident aliens only.
You are a nonresident alien unless you are either a U.S. citizen or a resident alien of the United States. You are a resident alien of the United States if you meet either the substantial presence test or the green card test. Even if you do not meet either of these tests, you may be able to choose to be treated as a U.S. resident alien for part of the year. See First-Year Choice under Dual-Status Aliens in Publication 519, U.S. Tax Guide for Aliens.
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31 days during 2010, and
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183 days during the period 2010, 2009, and 2008, using the following chart.

Internal Revenue Service
Individual Forms and Publications Branch
SE:W:CAR:MP:T:I
1111 Constitution Ave. NW, IR-6526
Washington, DC 20224
Internal Revenue Service
1201 N. Mitsubishi Motorway
Bloomington, IL 61705-6613
Publication
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519 U.S. Tax Guide for Aliens
Form
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W-4 Employee's Withholding Allowance Certificate
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W-8BEN Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding
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W-7 Application for IRS Individual Taxpayer Identification Number
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1040-C U.S. Departing Alien Income Tax Return
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1040NR U.S. Nonresident Alien Income Tax Return
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1040NR-EZ U.S. Income Tax Return for Certain Nonresident Aliens With No Dependents
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1040-ES (NR) U.S. Estimated Tax for Nonresident Alien Individuals
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2063 U.S. Departing Alien Income Tax Statement
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4868 Application for Automatic Extension of Time To File U.S. Individual Income Tax Return
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