Introduction
If you live in Australia and earn money from a U.S. source, you may be unsure whether you owe the IRS a return. Dividends from a U.S. brokerage, rent from a Florida unit, a short contract with a U.S. client: each can raise the question. Many people either file the wrong form or skip filing altogether.
This guide covers U.S. federal income tax for nonresident aliens. It walks through status tests, filing triggers, income types, documents, schedules and deadlines.
IRS figures here follow the 2025 forms and instructions. Check every number against the current Form 1040-NR instructions and Publication 519 before you file.
Key Takeaways
- Your status turns on the green card test and the substantial presence test.
- Form 1040-NR reports U.S. income and claims refunds of over-withheld tax.
- Effectively connected income and FDAP income are taxed differently.
- Australian obligations are separate from the U.S. return.
- Dual status, DACA or treaty claims call for professional review.
Who Is a Nonresident Alien and Who Must File Form 1040-NR?
Understand the U.S. tax definition
For U.S. tax purposes, a nonresident alien is a non-U.S. citizen who meets neither the green card test nor the substantial presence test. Tax status is not the same as immigration status, citizenship or where you live.
The difference shapes what you report:
- Nonresident alien: taxed on certain U.S.-source income, and on income connected with a U.S. business.
- Resident alien: taxed on worldwide income, like a citizen.
- U.S. citizen: taxed on worldwide income wherever they live.
Apply the green card and substantial presence tests
You meet the green card test if you were a lawful permanent resident at any time during the calendar year.
The substantial presence test counts days of physical presence. You need at least 31 days in the current year and 183 weighted days, according to the IRS substantial presence guidance.
The weighted formula:
- All days in the current year
- One-third of the days in the preceding year
- One-sixth of the days in the second preceding year
Example: You spent 120 days in the U.S. in each of 2025, 2024 and 2023. That gives 120 + 40 + 20 = 180 weighted days. You fall short of 183, so you do not meet the test for 2025. This mirrors the Publication 519 example.
Some days do not count toward the test:
- Days as an exempt individual
- Transit under 24 hours between foreign places
- Days you could not leave because of a medical condition that arose in the U.S.
You can also claim a closer connection to a foreign country if you were present fewer than 183 days. That claim requires Form 8840.
Identify when Form 1040-NR is generally required
You generally must file if:
- You were engaged in a U.S. trade or business, even with no income from it
- Withholding did not satisfy the tax on your taxable U.S. income
- You want a refund of excess U.S. tax withheld
Some nonresidents without a U.S. business have their liability fully settled through withholding and do not need to file. Even then, a refund claim still requires a return.
Don't confuse this with "exempt individual" status. An exempt individual is someone whose days don't count toward the substantial presence test, such as certain students. It does not mean exempt from income tax or from filing.
How Are Nonresident Aliens Taxed in the United States?
Effectively Connected Income (ECI)
Effectively connected income (ECI) is U.S.-source income tied to a U.S. trade or business, such as services performed in the U.S. It is taxed at graduated rates after allowable deductions.
Location of the activity matters more than your home or where you are paid. An Australian consultant who works on-site in Texas for six weeks has U.S.-source service income, even if the invoice is paid into an Australian account.
FDAP Income and Withholding
Fixed, determinable, annual or periodical (FDAP) income includes dividends, interest, rents and royalties. Non-ECI U.S.-source FDAP generally faces a 30% gross tax with no deductions, or a lower treaty rate, according to the IRS FDAP guidance. Payers generally withhold it at source.
Exceptions exist. Qualifying portfolio interest and certain bank-deposit interest can be excluded. A separate 30% rule applies to net U.S.-source capital gains if you were present 183 or more actual days.
Deductions, Credits and Treaty Benefits
Nonresident aliens generally cannot claim the standard deduction. Schedule A allows limited itemised deductions, such as qualifying U.S. charitable contributions and federally declared disaster losses. Education credits and the earned income credit are unavailable. The foreign tax credit and certain dependant-care and retirement savings credits may apply.
Under the U.S.-Australia treaty (1982 convention, amended by the 2001 protocol):
| Income | Generally capped at |
|---|---|
| Dividends | 15% (5% for a company directly holding 10% or more of voting power) |
| Interest | 10% |
| Royalties | 5% |
For dividends, the 10% figure is an ownership threshold for the lower 5% rate, not a withholding rate itself. Eligibility depends on the article, your residence and the income facts.
Three forms do different jobs:
- W-8BEN and 8233 go to the withholding agent during the year.
- Form 8833 discloses treaty-based positions with your return, though not every treaty claim needs it.
Australian Tax Considerations
Form 1040-NR covers U.S. federal income tax only. It does not decide what you declare in Australia. Under the ATO's foreign income guidance, overseas income must be declared in your Australian return, and a foreign income tax offset may be available. Review Australian residency and the treaty's credit relief separately.
How to File Form 1040-NR Step by Step
1. Confirm status and tax year
Start with your citizenship, visa, green card history, U.S. presence days, treaty residence and income types. Use Form 1040-NR and the instructions for the correct tax year, not line references from an older form.
You will need an SSN if you are eligible. If not, apply for an ITIN with Form W-7, normally attached to the return. You cannot e-file with an ITIN in the calendar year it is assigned.
2. Gather income and withholding records
Collect:
- Form W-2 and Forms 1099
- Form 1042-S for U.S.-source income subject to withholding
- Brokerage and rental statements
- Scholarship or fellowship statements
- Business income records
- Proof of estimated payments
Reconcile each form against what you report. Follow up on missing or incorrect forms before filing.
3. Complete the return and schedules
Form 1040-NR covers personal details, filing status, income, deductions, tax, payments and refund or balance due. Filing status is limited to single, married filing separately or qualifying surviving spouse. Joint and head of household are not available.
Key schedules on the 2025 form:
- Schedule OI: other information, including treaty details
- Schedule NEC: tax on non-ECI income
- Schedule A: itemised deductions
W-2 withholding goes on line 25a and 1042-S withholding on line 25g. Common errors include omitting Schedule OI and placing ECI on Schedule NEC.
4. Report treaty claims
Being from a treaty country is not enough. Review the article, income type, residence and documentation. Disclose reportable positions on Form 8833. An unsupported claim risks penalties and a rejected position.
5. File, pay and keep records
You can e-file through an authorised preparer. Do not also mail a return you have already e-filed. For paper filing, the 2025 instructions give these addresses:
- Without payment: Department of the Treasury, Internal Revenue Service, Austin, TX 73301-0215, USA
- With payment: Internal Revenue Service, P.O. Box 1303, Charlotte, NC 28201-1303, USA
Confirm addresses against the current instructions. Pay by Direct Pay or approved card processors. New individual EFTPS enrolments are closed. Keep records generally for three years.
Documents, Deadlines and What Happens After Filing
Use a nonresident alien filing checklist
- Passport and visa details
- U.S. presence day records
- SSN or ITIN details
- W-2, 1042-S and 1099 forms
- Treaty documents and prior returns
- Payment records
- Form 8843 or Form W-7 (if applicable)
Understand deadlines and extensions
For 2025 returns, the deadline is 15 April 2026 if you had wages subject to withholding, and 15 June 2026 if you had none, per the 2025 Form 1040-NR instructions.
A timely Form 4868 gives six more months to file, not to pay.
If you file or pay late:
- Late filing: 5% of unpaid tax per month, up to 25%
- Late payment: 0.5% per month, up to 25%, plus interest
Correct errors after filing
Use Form 1040-X to amend a 1040-NR, electronically or on paper marked "Amended". Get advice if the fix involves a prior Form 1040, dual-status filing or a missed treaty position.
Special Situations, Common Mistakes and When to Seek Help
Students, teachers, trainees and other visa holders
Exempt-individual treatment depends on visa category:
- F, J, M and Q students are generally exempt for five calendar years; any part of a year counts
- J and Q teachers and trainees face a shorter exemption limit
- Certain A and G visa holders may also qualify
Most exempt individuals must still file Form 8843, even with no taxable income.
Dual status, DACA, spouses and dependants
Changing status mid-year can create dual-status filing duties, with separate rules for each period. A nonresident spouse of a U.S. citizen or resident may elect to be treated as a resident for the full year, which triggers worldwide income reporting and joint filing.
Dependant claims on Form 1040-NR are limited to specific groups, such as residents of Canada, Mexico or South Korea, and qualifying Indian students. For DACA recipients, the IRS applies the standard residency tests; there is no blanket classification.
Avoid common filing errors
- Filing Form 1040 instead of 1040-NR
- Overlooking Form 1042-S withholding
- Missing treaty disclosures
- Confusing Form 8843 with a tax return
- Assuming no U.S. wages means no filing duty
Dual-status years, treaty positions and mid-year visa changes are common points to get a professional review. VJM Global provides Form 1040-NR preparation and filing support for nonresident aliens with U.S.-source income, including treaty claims under Form 8833 and withholding management. For cross-border U.S. and Australian questions, that review is often worth the cost.
Frequently Asked Questions
How do I know if I am a resident alien or nonresident alien?
Check the green card test and the substantial presence test (31 current-year days and 183 weighted days). Exceptions, treaty rules and dual-status issues may change the result.
What is a nonresident alien for tax purposes?
It's a non-U.S. citizen who meets neither test. The label is a tax classification, separate from citizenship or immigration status.
How are nonresident aliens taxed in the US?
They are taxed on U.S.-source income. ECI is taxed at graduated rates, while FDAP income generally faces 30% withholding unless a treaty lowers it.
Can I file single if my spouse lives in another country?
Filing status depends on your facts, not your spouse's location. Nonresidents can file single, married filing separately or qualifying surviving spouse, with limited exceptions.
Can I claim a non-U.S. citizen as a dependent?
Only specific groups qualify, such as certain Canada, Mexico and South Korea residents. You must also enter an SSN, ITIN or ATIN.
What is an exempt individual?
An exempt individual doesn't count certain days toward the substantial presence test. That doesn't exempt them from U.S. tax or filing.
