How Income Is Categorized and Taxed
A nonresident alien's income that is subject to U.S. income tax must generally be divided into two categories:
- Income that is effectively connected with a trade or business in the United States
- Income that is not effectively connected with a trade or business in the United States
The Difference Between Effectively Connected and Not Effectively Connected Income
One of the differences between these two categories is that Effectively Connected Income, after allowable deductions, is taxed at graduated rates. These are the same rates that apply to U.S. citizens and residents. Income that is not effectively connected is taxed at a flat 30 percent (or lower treaty rate) and no deductions are allowed against such income. Income that is not effectively connected is also known as Fixed, Determinable, Annual, or Periodical (FDAP).
Other topics relating to the income of nonresident aliens may be found at:
Which Form to File
Nonresident aliens who are required to file an income tax return should use Form 1040NR (PDF) or, if qualified, Form 1040NR-EZ (PDF). Refer to the Instructions for Form 1040NR-EZ to determine if you may use Form 1040NR-EZ. If you do not qualify to file Form 1040NR-EZ, you must file Form 1040NR. To determine which form to file, foreign students and foreign scholars may find more information at Which Form to File.
Who Must File
If you are any of the following, you must file a return:
- A nonresident alien individual engaged or considered to be engaged in a trade or business in the United States during the year. You must file even if:
- Your income did not come from a trade or business conducted in the United States,
- You have no income from U.S. sources, or
- Your income is exempt from income tax.
However, if your only U.S. source income is wages in an amount less than the personal exemption amount (see Publication 501), you are not required to file.
- A nonresident alien individual not engaged in a trade or business in the United States with U.S. income on which the tax liability was not satisfied by the withholding of tax at the source.
- A representative or agent responsible for filing the return of an individual described in (1) or (2),
- A fiduciary for a nonresident alien estate or trust, or
- A resident or domestic fiduciary, or other person, charged with the care of the person or property of a nonresident individual may be required to file an income tax return for that individual and pay the tax (Refer to Treas. Reg. 1.6012-3(b)).
NOTE: If you were a nonresident alien student, teacher, or trainee who was temporarily present in the United States on an "F,""J,""M," or "Q" visa, you are considered engaged in a trade or business in the United States. You must file Form 1040NR (or Form 1040NR-EZ) only if you have income that is subject to tax, such as wages, tips, scholarship and fellowship grants, dividends, etc. Refer to Foreign Students and Scholars for more information.
Claiming a Refund or Benefit
You must also file an income tax return if you want to:
- Claim a refund of overwithheld or overpaid tax, or
- Claim the benefit of any deductions or credits. For example, if you have no U.S. business activities but have income from real property that you choose to treat as effectively connected income, you must timely file a true and accurate return to take any allowable deductions against that income.
Departing Alien
Even if you have left the United States and filed a Form 1040-C, U.S. Departing Alien Income Tax Return (PDF), on departure, you still must file an annual U.S. income tax return. If you are married and both you and your spouse are required to file, you must each file a separate return, unless one of the spouses is a U.S. citizen or a resident alien, in which case the departing alien could file a joint return with his or her spouse (Refer to Nonresident Spouse Treated as a Resident).
When and Where To File
If you are an employee or self-employed person and you receive wages or non-employee compensation subject to U.S. income tax withholding, or you have an office or place of business in the United States, you must generally file by the 15th day of the 4th month after your tax year ends. For a person filing using a calendar year this is generally April 15.
If you are not an employee or self-employed person who receives wages or non-employee compensation subject to U.S. income tax withholding, or if you do not have an office or place of business in the United States, you must file by the 15th day of the 6th month after your tax year ends. For a person filing using a calendar year this is generally June 15.
File Form 1040NR-EZ and Form 1040NR at the address shown in the instructions for Form 1040NR-EZ and 1040NR.
Extension of time to file
If you cannot file your return by the due date, you should file Form 4868. You must file Form 4868 by the regular due date of the return.
When to File For Deductions and Credits
To get the benefit of any allowable deductions or credits, you must timely file a true and accurate income tax return. For this purpose, a return is timely if it is filed within 16 months of the due date just discussed. Refer to When To File in Chapter 7 of Publication 519, U.S. Tax Guide for Aliens (PDF) for additional details.
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