Nonresident Alien Tax Rules: No Standard Deduction, Special W-4 & Form 1040-NR

Two income categories

How effectively connected income (ECI) differs from FDAP

The IRS splits nonresident alien income into two categories, each taxed differently:

Most NRAs working in the U.S. primarily earn ECI (their salary), which is taxed at graduated rates through employer withholding. The 30% flat rate applies to separate passive income streams.

How to fill out Form W-4 as a nonresident alien

The standard W-4 assumes you can claim the standard deduction, but NRAs generally cannot. The IRS addresses this through Notice 1392 (Supplemental Form W-4 Instructions for Nonresident Aliens). The key requirements:

1. Write "Nonresident Alien" or "NRA" above the dotted line on Step 4(c) of Form W-4. This signals to your employer's payroll system to apply NRA withholding procedures.
2. Do not check "Exempt" on the W-4. NRAs cannot claim exemption from withholding through the W-4 (though a treaty-based exemption uses Form 8233 instead).
3. Filing status for withholding purposes: Use "Single" regardless of your actual marital status. NRAs cannot file jointly on Form 1040-NR (with one narrow exception for NRAs married to U.S. citizens who elect to file jointly).

Because NRAs lose the standard deduction benefit built into the W-4 tables, their per-paycheck withholding is typically higher than a U.S. citizen at the same salary. This often results in a refund at filing time, since the withholding tables are conservative. Use our paycheck withholding calculator to estimate your check amount.

Why the standard deduction usually does not apply

The standard deduction is a flat amount that reduces your taxable income before calculating your tax. Congress made it available only to U.S. citizens and resident aliens. As an NRA filing Form 1040-NR, you may only take itemized deductions that are directly connected to your effectively connected income — state and local taxes you paid, for example.

The sole well-known exception is for residents of India, who may claim the standard deduction under Article 21 of the U.S.-India tax treaty. If you are from India and believe this applies, file Form 8833 to disclose the treaty position on your return.

Step-by-step: filing Form 1040-NR

1. Determine your residency status. Use the substantial presence test to confirm you are a nonresident alien. If you meet the test, you are a resident alien and should file Form 1040 instead.
2. Gather documents. W-2 (wages), 1042-S (income subject to NRA withholding such as scholarships or treaty-exempt amounts), 1099 forms, and records of any deductible expenses connected to your U.S. income.
3. Report ECI on Page 1. Your U.S. wages go here, taxed at graduated rates.
4. Report FDAP on Schedule NEC. Any U.S.-source passive income goes on Schedule NEC (Not Effectively Connected), taxed at 30% or the applicable treaty rate.
5. Claim itemized deductions. Only deductions connected to ECI are allowed. Common ones include state income taxes paid and unreimbursed employee business expenses (if still deductible).
6. Apply tax treaty benefits. If your country has a treaty reducing or eliminating tax on certain income, claim it on Form 8833 and reduce your tax accordingly.
7. Calculate tax and credits. Apply the tax tables to your ECI taxable income, add any Schedule NEC tax, and subtract credits like the foreign tax credit (if applicable).

Tax treaties and Form 8233

If your country's tax treaty exempts or reduces the tax on your wages (this is less common for wages than for scholarships or royalties), you file Form 8233 with your employer to claim the benefit. Your employer then reduces or stops withholding federal income tax on the treaty-covered amount. This is separate from the FICA exemption available to F-1 and J-1 holders.

At filing time, report the treaty position on Form 8833 attached to your 1040-NR. If your treaty benefit covers all your income and you have no tax liability, you may still have a filing requirement to disclose the treaty position.

Common mistakes nonresident aliens make

1. Filing Form 1040 instead of 1040-NR. This is the most frequent error and can result in incorrectly claiming the standard deduction, overstating deductions, and triggering IRS correspondence.
2. Using TurboTax or similar consumer software. Most mainstream tax software does not support Form 1040-NR. Use NRA-specific software like Sprintax, or consult a tax professional.
3. Not marking "NRA" on the W-4. Without this notation, your employer withholds as if you are a citizen, which can result in under-withholding since the W-4 tables assume a standard deduction you cannot claim.
4. Claiming the standard deduction. Unless you qualify under a specific treaty provision, you cannot take it. The IRS will adjust your return and send a bill.
5. Ignoring FDAP withholding on 1042-S. If you receive a 1042-S showing income and withholding, report it on your 1040-NR to claim credit for the tax withheld.

For a comparison of how different visa types handle withholding, see our guides for H-1B workers, F-1 OPT students, and J-1 exchange visitors.