As a business owner or human resources manager, you may come across the term 'non-resident alien' in employment and tax contexts. A non-resident alien is an individual who is not a U.S. citizen and does not meet the criteria to be considered a resident alien for tax purposes. This includes individuals who do not pass the green card test or the substantial presence test. Understanding the status of non-resident aliens is important because it affects tax withholding, reporting requirements, and eligibility for certain benefits. Misclassifying an employee's tax status can lead to compliance issues and potential penalties.
For example, if you hire a foreign national on a temporary work visa, such as an F-1 or J-1, they may be classified as a non-resident alien. This classification impacts how you withhold federal income tax from their wages. Non-resident aliens are generally subject to a flat 30% withholding rate on certain types of income, unless a tax treaty between the U.S. and their home country specifies a lower rate. Additionally, non-resident aliens are typically exempt from Social Security and Medicare taxes. Properly determining and applying the correct tax withholding rates for non-resident aliens ensures compliance with IRS regulations and helps avoid potential tax liabilities.
What Is The Difference Between A Non-Resident Alien And A Resident Alien?
The primary difference between a non-resident alien and a resident alien lies in their tax obligations and residency status in the United States:
The key difference between the two classifications is the scope of taxable income: resident aliens are taxed on their global income, while non-resident aliens are only taxed on income earned within the U.S.
How Are Non-Resident Aliens Taxed?
Non-resident aliens are taxed differently than U.S. citizens and resident aliens. Here’s how:
- U.S.-Sourced Income: Non-resident aliens are generally taxed only on income that is sourced from the U.S. This includes wages earned from U.S.-based work, rental income from U.S. properties, or business income connected to a U.S. trade or business.
- Tax Rate: Non-resident aliens are typically subject to a flat 30% tax rate on U.S.-sourced income unless a tax treaty between their home country and the U.S. allows for a lower rate. This withholding is often applied before the recipient receives the funds.
- No Global Income Taxation: Unlike resident aliens, non-resident aliens are not taxed on income earned outside the U.S., meaning their foreign income is not subject to U.S. taxes.
- Filing Requirements: Non-resident aliens must file Form 1040-NR with the IRS to report their U.S.-sourced income. They generally cannot claim the same deductions, exemptions, or tax credits that are available to U.S. citizens or resident aliens, unless specified in a tax treaty.
In short, non-resident aliens are primarily taxed on their U.S.-connected income and are not liable for taxes on their worldwide income.
How To Hire A Non-Resident Alien In The U.S.?
To hire a non-resident alien in the U.S., follow these steps:
- Verify work eligibility by ensuring the candidate has the appropriate visa status, such as H-1B or F-1 with Optional Practical Training (OPT).
- Complete Form I-9 to verify their identity and work authorization.
- Ensure tax compliance by withholding the correct taxes based on non-resident alien status and filing required IRS forms like 1042 and 1042-S.
- Make sure employees have obtained a valid SSN or ITIN for tax purposes. Non-resident aliens must provide a valid Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN) to determine their income tax liability. If they are not eligible for an SSN, they will need to apply for an ITIN by filing Form W-7 with the IRS.
- Adhere to visa-specific restrictions, such as employment duration and employer sponsorship rules.
- Set up payroll to handle the proper tax withholding.
- Comply with labor laws, as non-resident aliens have the same workers’ rights as U.S. employees.
For more streamlined global hiring, Playroll can assist with compliance and employment solutions. With Playroll, you can seamlessly manage compliance for your global workforce, and ensure the correct classification between non-resident and resident aliens for tax purposes. For more information, chat to one of our experts about how we help businesses stay compliant while scaling their global teams, without the red tape.
Non-Resident Alien FAQs

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Here are a few common examples of non-resident aliens in the U.S.:
- Foreign Students on F-1 Visa
- Foreign Employees on Temporary Work Visas
- Tourists on B-2 Visa

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If you have a green card or meet the requirements of the substantial presence test, you are a resident alien. If neither applies, you are a non-resident alien.