Form 1040-NR: A comprehensive guide for nonresident aliens

Written by  Mel Whitney, EA

Last updated Mar 02, 2026

If you're earning income in the US but aren't a tax resident, you'll need to deal with Form 1040-NR. The form can feel like a maze of regulations and unfamiliar terms, but understanding it is necessary for staying compliant.

This guide breaks down how Form 1040-NR works, so you can handle your tax obligations accurately and avoid unnecessary complications.

What is Form 1040-NR?

Form 1040-NR (US Nonresident Alien Income Tax Return) is used by nonresident aliens to report income earned from US sources. It allows nonresidents to declare US-sourced income and claim any deductions or credits available to them.

The main difference between Form 1040-NR and Form 1040 lies in who must file each form and how income is taxed:

The primary criterion for filing Form 1040-NR is your status as a nonresident alien. This applies if you haven't met the Green Card Test or the Substantial Presence Test.

• Green Card Test: You are considered a resident if you were a lawful permanent resident of the US at any point during the year.
• Substantial Presence Test: This involves a calculation based on the number of days you were present in the US over the past three years. If you meet the threshold, you're generally considered a resident for tax purposes.

Who needs to file Form 1040-NR?

Non-US citizens with US source income

Nonresident aliens must file Form 1040-NR if they receive income from US sources, regardless of the amount. This includes wages from temporary or part-time work, income from business activities conducted in the US, and investment income such as dividends, interest, or capital gains.

International students and scholars (F, J, M, Q Visas)

Students and scholars are generally nonresident aliens during the first five years in the US (students) or the first two years (teachers and researchers). They must file Form 1040-NR for US-sourced income, including taxable scholarships or fellowships, on-campus or authorized off-campus work, practical training (OPT/CPT), and teaching or research assistantship stipends.

Even if no income is earned, some may need to file Form 8843 to report exempt status.

Foreign investors (real estate & stocks)

Nonresident aliens investing in US real estate or securities must report income on Form 1040-NR, such as rental income from US properties, capital gains from property sales, and dividends, interest, and REIT income. Income may be treated as Effectively Connected Income (ECI) if engaged in a US business, or as passive income subject to withholding.

Do remote workers need to file?

Filing depends on where the work is physically performed, not the employer's location. Income earned while physically in the US is US-sourced and reportable, while work done entirely outside the US generally does not require filing.

Digital nomads should track days carefully, as US presence affects taxation. Working on a tourist visa (B-1/B-2) is generally not permitted and may have immigration consequences.

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Understanding income types: ECI vs. FDAP

Nonresident aliens face two categories of US income taxation: Effectively Connected Income (ECI) and Fixed, Determinable, Annual, or Periodical (FDAP) income. Each is taxed differently.

Effectively Connected Income (ECI) comes from activities that constitute a US trade or business. It is taxed at progressive rates from 10% to 37%. Examples include salaries and wages from US employment, business income from operating a US company, rental income when actively managing properties, and self-employment income from services performed in the US.

FDAP income is passive US-sourced income not connected to a trade or business. It is taxed at a flat 30% rate (or lower treaty rate) and usually withheld at the source. Examples include dividends from US corporations, interest from US bonds or accounts, royalties, and pension or annuity income.

FDAP income is reported on Schedule NEC, attached to Form 1040-NR, which calculates the 30% tax on passive income.

Key components of Form 1040-NR (schedules)

When filing Form 1040-NR, you'll work with several schedules that accompany the main form. Each schedule serves a specific purpose in reporting different aspects of your tax situation.

Schedule OI (Other Information) is a required schedule that all Form 1040-NR filers must complete. This schedule collects essential information: visa type, country of residence, passport details, and days present in the US during the tax year. It also asks about your immigration status and visa category, whether you've changed your residency status during the year, tax treaty claims you're making, and your country of citizenship and tax residence.

Schedule NEC (Tax on Income Not Effectively Connected with a US Trade or Business) is used to report and calculate tax on FDAP income. This schedule lists your passive income sources, like dividends, interest, and royalties, that are subject to the flat 30% withholding tax. If you're claiming a reduced rate under a tax treaty, you must indicate this on Schedule NEC and attach Form 8833 if required.

Form 8843 (Statement for Exempt Individuals) must be filed by certain nonresident aliens even with no income. This form is required for students, teachers, trainees, and researchers on F, J, M, or Q visas to claim exemption from the substantial presence test.

Why filing Form 8843 matters:

• Prevents the IRS from incorrectly treating you as a resident alien
• Documents days of presence excluded from the substantial presence test
• Must be filed even with zero income and no Form 1040-NR requirement

How to file Form 1040-NR

Filing Form 1040-NR requires careful preparation and attention to detail. Unlike US citizens and residents who have multiple filing options, nonresident aliens face some limitations when it comes to electronic filing.

Most commercial tax software doesn't support Form 1040-NR, and the IRS Free File program is generally not available for nonresidents. Some options do exist: certain tax professionals with IRS-approved software can e-file Form 1040-NR on your behalf, and specialized services like Sprintax and Glacier Tax Prep are designed for nonresident alien tax returns.

However, the reality is that most nonresident aliens must file by paper and mail it to the IRS.

If you don't have and aren't eligible for a Social Security Number (SSN), you'll need an Individual Taxpayer Identification Number (ITIN) to file Form 1040-NR. To obtain an ITIN, complete Form W-7 (Application for IRS Individual Taxpayer Identification Number) and attach it to your Form 1040-NR along with proof of identity and foreign status, such as a passport or birth certificate. You must submit original documents or certified copies from the issuing agency.

Alternatively, you can apply through a Certified Acceptance Agent (CAA), which allows you to avoid mailing original documents.

While e-filing is faster and more convenient for most taxpayers, paper filing remains the primary method for nonresident aliens. If you're filing by mail, make sure to send your return to the correct IRS address.

For those without US income subject to withholding, the address is Department of the Treasury, Internal Revenue Service Center, Austin, TX 73301-0215 USA. Keep copies of all documents before mailing, consider using certified mail for proof of delivery, and allow extra time for processing, which typically takes 8–12 weeks.

Form 1040-NR preview

Deadlines and important dates

Nonresident aliens must be aware of specific tax deadlines that may differ from those for US residents.

April 15 is the general deadline for nonresident aliens who earned US-sourced income during the tax year. This applies if you had wages, business income, or other effectively connected income that requires reporting.

June 15 is an extended deadline available to certain nonresident aliens if you lived outside the US and Puerto Rico for the entire tax year and your only US income was not effectively connected with a US trade or business (passive income only). Students and scholars filing only Form 8843 with no income to report also have until June 15 to file.

Late filing can result in significant penalties. If you're unable to meet the deadline, you can file Form 4868 to request a six-month extension. Note that this extends only the filing time, not the payment time. Learn more about filing a tax extension to understand your options.

Correcting mistakes and solutions

Incorrect filing status is one of the most frequent errors. Filing as a resident alien (Form 1040) when you're actually a nonresident alien can result in incorrect tax calculations, overpayment or underpayment of taxes, and potential compliance issues. Always verify your status using the substantial presence test before determining which form to file.

Misreported income can trigger IRS inquiries and penalties. Ensure all US-sourced income is accurately reported, including wages, dividends, interest, and capital gains. Common mistakes include failing to report scholarship or fellowship income, not including all sources of FDAP income that had taxes withheld, and incorrectly categorizing income as ECI vs. FDAP.

Personal information errors can cause significant processing delays. Incorrect Social Security Numbers (SSN) or Individual Taxpayer Identification Numbers (ITIN) are among the most common issues.

Correcting mistakes

If you discover errors after filing, you can correct them by filing Form 1040-X (Amended US Individual Income Tax Return). Timely correction is important to avoid further complications with the IRS.

Deductions, credits, and tax treaties

The tax benefits available to nonresident aliens are more limited than those for US citizens and residents, but they're not nonexistent. Understanding what you can claim – and how tax treaties might expand your options – makes a real difference in your final tax bill.

As a nonresident alien, you're not eligible for the standard deduction that US residents can claim. This means you'll need to itemize your deductions on Form 1040-NR, claiming only those expenses that directly relate to your US-sourced income. These might include state and local income taxes you paid, or charitable contributions you made to qualified US organizations. It's a more restrictive system, and it requires keeping detailed records of your deductible expenses.

This is where tax treaties become particularly valuable. The US has bilateral tax agreements with dozens of countries, and these treaties exist specifically to prevent people from being taxed twice on the same income. For nonresident aliens, treaties can do more than just prevent double taxation – they can actually reduce your US tax burden in ways that wouldn't otherwise be possible.

Tax treaties work by creating exceptions to the normal rules. Depending on which country you're from, a treaty might lower the withholding rate on your investment income, provide exemptions for certain types of scholarships or grants, or even allow you to claim deductions that nonresidents typically can't access.

One of the most significant treaty benefits applies to students and business apprentices from India, who, under the US–India tax treaty, can actually claim the standard deduction – something almost no other nonresidents can do.

The benefits vary significantly depending on your home country. To give you a sense of what different treaties offer, here are some common provisions:

If you think a tax treaty might apply to your situation, it's worth reviewing the specific treaty between the US and your home country. The IRS publishes detailed information about each treaty in Publication 901.

When you file Form 1040-NR, you'll indicate which treaty benefits you're claiming, typically on Schedule NEC. For more significant treaty claims, you might also need to file Form 8833 to disclose the specific treaty provision you're relying on.

When to seek pro help

If you have complex tax situations or are unsure about your filing obligations, it's wise to seek advice from a tax professional specializing in expatriate tax issues.