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How is a ‘non-resident alien’ defined for tax purposes?

In the U.S., a "non-resident alien" is someone who does not meet the tax resident criteria; rules are complex, and consulting specialists is essential to ensure legal compliance.

Written by

Victoria Harper

Editor-in-Chief

Updated on August 15, 2025
2 min read
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Let’s start by explaining that, in the United States, the tax system adopts specific rules to determine who is considered a resident for tax purposes and, consequently, who qualifies as a “non-resident alien”. This definition may differ from that used in immigration contexts, such as for investors or students with an F visa. In general terms, for the IRS (Internal Revenue Service), a “non-resident alien” is a person who is not a U.S. citizen and does not meet the criteria established to be considered a tax resident.

The main criteria to classify someone as a tax resident are the Green Card Test and the Substantial Presence Test. In the case of the F visa (commonly used for students), it is usual for the holder to be considered an “exempt individual” for a certain period, which may prevent the days of presence in the country from counting towards the Substantial Presence Test.

However, it is crucial to understand that even students can, under certain circumstances, end up being classified as tax residents, depending on the length of stay and other specific factors.

It is very important to follow the laws and regulations of the United States related to taxes and immigration. The rules can be complex and often change or require detailed interpretations. Thus, to ensure that you comply with U.S. tax rules, it is always recommended to consult specialized professionals, seek reliable sources, and avoid falling for offers or marketing campaigns that promise quick solutions or results.

Finally, remember that staying informed and counting on expert help can prevent complications in the future. Compliance with U.S. immigration and tax legislation is essential to avoid legal problems, and seeking specialized advice is a prudent practice for anyone living or studying in the United States.

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Victoria Harper

Editor-in-Chief

Meet the author

Leading journalism and editorial content at Visto n’ Visa, Victoria helps make immigration topics clear, trustworthy, and easy to understand. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.

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How is a ‘non-resident alien’ defined for tax purposes?

In the U.S., a "non-resident alien" is someone who does not meet the tax resident criteria; rules are complex, and consulting specialists is essential to ensure legal compliance.

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