Form 1042-S Withholding: How NRAs Can Recover Over-Withheld US Tax

You Got a Form 1042-S. Now What? How NRAs Can Recover Withheld Tax on US Income

If you’re a nonresident alien and someone in the US paid you money last year, chances are 30% of it never reached you. The payer withheld it and sent it to the IRS on your behalf. You should have received a Form 1042-S showing how much was withheld, what type of income it was, and what tax rate was applied.

That 30% isn’t always the correct amount. Depending on your country of residence, the type of income, and whether you filled out the right paperwork, you might be owed a refund. Sometimes a big one. But getting it back requires filing a US tax return, and filing a US tax return requires an ITIN if you don’t have a Social Security Number.

This article covers how withholding works for different income types, when tax treaties reduce the rate, how W-8 and W-9 forms fit in, whether forming a US company helps, and the step-by-step process to get your money back.

What Form 1042-S Is and Why You Got One

Form 1042-S, “Foreign Person’s U.S. Source Income Subject to Withholding,” is the document a US withholding agent files when they pay certain types of income to a foreign person. Think of it as the NRA equivalent of a 1099. The payer sends one copy to the IRS and one to you.

The form reports:

The type of income (identified by income code)
The gross amount paid
The tax rate applied
The amount withheld
Any tax treaty claimed

You need this form to file your 1040-NR and claim a refund of over-withheld tax. If you didn’t receive one and believe you should have, contact the payer directly. The deadline for payers to issue 1042-S forms is March 15 each year.

The Two Categories of NRA Income: FDAP vs. ECI

The US tax system splits nonresident alien income into two buckets, and everything about your withholding, tax rate, and refund potential depends on which bucket your income falls into.

FDAP Income (Fixed, Determinable, Annual, or Periodical)

This is passive-type income from US sources. The default treatment: 30% flat withholding at the source, no deductions allowed. The payer takes 30% off the top before you see a dime.

Common FDAP income types:

Dividends from US corporations
Interest (with exceptions, like portfolio interest)
Royalties (licensing intellectual property, music, patents)
Gambling winnings (slots, poker, table games at US casinos)
Pensions and annuities
Scholarship and fellowship grants (the taxable portion)
Compensation for personal services performed in the US (when not connected to a trade or business)

FDAP income is reported on Form 1042-S. The 30% withholding rate can be reduced by a tax treaty, but only if the NRA provided a valid W-8BEN to the payer before the payment was made.

ECI (Effectively Connected Income)

This is income connected to an actual trade or business you’re running in the United States. The treatment is completely different: ECI is taxed at graduated rates (10% to 37%), and you can deduct business expenses against it.

Common ECI scenarios:

Rental income from US property (if you make the §871(d) election to treat it as ECI)
Income from a US partnership where you’re actively involved in the business
Sales of goods through a US-based operation
Services performed in the US as part of an ongoing business activity

ECI is not subject to the 30% flat withholding regime. Instead, partnerships withhold tax on ECI allocated to foreign partners at the highest applicable rate (37% for individuals, 21% for corporations) under §1446. This withholding also shows up on Form 1042-S.

The distinction matters because with ECI, you often end up owing less than what was withheld once you apply deductions. That’s refund territory.

How Income Type Changes Everything

Gambling Winnings

This is one of the most common 1042-S situations. You visit Las Vegas, hit a jackpot, and the casino hands you 70% of your winnings because they withheld 30% for the IRS.

Gambling winnings from US sources are FDAP income (income code 28 on the 1042-S). The default is 30% withholding. But here’s where your country of residence makes a big difference:

Countries with a gambling treaty provision (like Canada, Japan, and several European countries): the treaty may reduce the withholding rate to 0%. If 30% was withheld anyway, you file a 1040-NR to claim the full refund.
Countries without a gambling treaty provision (like Brazil, Mexico, China): the 30% stands. There’s no mechanism to reduce it. You can still file a 1040-NR, but you won’t get a refund because 30% is the correct rate.

Important: even with a treaty, you need a valid ITIN to file the 1040-NR and claim the refund. Without an ITIN, the money stays with the IRS.

Services Performed in the US

If you’re a foreign consultant, freelancer, or performer who earned money for work done on US soil, the tax treatment depends on whether it’s classified as FDAP or ECI.

Occasional services (FDAP): If you came to the US for a one-off gig, like a speaking engagement, a short consulting project, or a performance, the income is typically FDAP. The payer should withhold 30% and issue a 1042-S. Tax treaties often reduce the rate on independent personal services (some reduce it to 0% if your US presence was under 183 days and the income was under a certain threshold).

Ongoing business activity (ECI): If you’re regularly performing services in the US through a fixed base or office, the income becomes ECI. It’s taxed at graduated rates, and you can deduct expenses. The withholding may differ, and you’ll need to file a 1040-NR showing the full picture.

The line between “occasional” and “ongoing” isn’t always obvious. A Brazilian software developer who flies to Miami for one 2-week consulting project is probably FDAP. That same developer who has a US office, US clients, and spends 4 months a year in Florida is probably ECI. When in doubt, get professional advice before the income is paid, not after.

Sales of Goods and Property

The withholding rules for sales depend on what you’re selling and how:

Sales of inventory through a US office: This is ECI. Taxed at graduated rates with deductions. If you’re running a US-based operation that buys and sells goods, the income is connected to your US trade or business.
Sales of real property (FIRPTA): Different regime entirely. The buyer withholds 15% of the gross sales price under FIRPTA rules. This shows up on a different form (8288-A), not 1042-S. We covered this in our FIRPTA article.
Sales of personal property: Generally not subject to US tax for NRAs unless the property has a US situs or the sale is connected to a US trade or business. If no US tax is owed, there shouldn’t be withholding.

Dividends and Interest

US-source dividends paid to NRAs are subject to 30% withholding. Most tax treaties reduce this to 15% or even lower. If the payer withheld 30% but you’re a resident of a treaty country with a lower rate, you file a 1040-NR to recover the difference.

Interest has more exceptions. “Portfolio interest” paid to NRAs is generally exempt from withholding under §871(h). Bank deposit interest from US banks is also exempt. But interest from a related party, or interest that doesn’t qualify as portfolio interest, gets the full 30% treatment unless a treaty says otherwise.

Royalties

Royalties for the use of intellectual property, patents, copyrights, or similar rights are FDAP income at 30%. Many treaties reduce the royalty rate to 10-15%, and a few reduce it to 0%. If you licensed software, music, or patents to a US company and they withheld 30%, check your country’s treaty. You may be owed a significant refund.

Treaty Countries vs. Non-Treaty Countries

If Your Country Has a Tax Treaty With the US

Tax treaties between the US and other countries can reduce or eliminate the 30% withholding rate on FDAP income. The specific reduction depends on the income type and the specific treaty.

Examples of common treaty benefits:

UK: Dividends reduced to 15%, interest to 0%, royalties to 0%
Canada: Dividends reduced to 15%, gambling winnings to 0%
Germany: Dividends reduced to 15%, interest to 0%, royalties to 0%
Japan: Dividends reduced to 10%, gambling winnings to 0%
Brazil: Dividends reduced to 15%, interest reduced to 15%, royalties reduced to 15% (but NO provision for gambling winnings)

To claim treaty benefits before payment, you submit a Form W-8BEN to the payer. This tells the payer your country of residence and the treaty article, so they can withhold at the reduced rate instead of 30%.

If you didn’t submit a W-8BEN in time and the payer withheld 30%, all is not lost. You file Form 1040-NR at the end of the year, report the income, claim the treaty rate, and request a refund of the excess withholding. You’ll need to attach Form 8833 (Treaty-Based Return Position Disclosure).

If Your Country Does NOT Have a Tax Treaty With the US

If there’s no treaty, 30% is the rate. Period. No refund is possible on FDAP income because the 30% flat rate is the correct tax.

Countries without a US tax treaty include Argentina, Chile, Colombia, Peru, Singapore (for most income types), and many others. If you’re a resident of one of these countries, the only way to reduce your US tax burden on FDAP income is through structural planning (more on that below).

Even without a treaty, filing a 1040-NR can still make sense if you have ECI. Since ECI is taxed at graduated rates with deductions, the effective rate may end up below 30%, and you’d be owed a refund of the excess withholding.

W-8 and W-9 Forms: Preventing Over-Withholding Up Front

The best refund is the one you don’t need to claim. By submitting the right form before you get paid, you can reduce or eliminate withholding at the source.

Form W-8BEN (for Individuals)

This is the form you give to a US payer to certify your foreign status and claim treaty benefits. It tells the payer: “I’m a nonresident alien, I’m a tax resident of [country], and under Article [X] of the treaty, the withholding rate on this type of income should be [reduced rate]%.”

The W-8BEN is valid for 3 years from the date signed. If it expires or you never submitted one, the payer defaults to 30% withholding. This is the single most common reason NRAs get over-withheld. They never filed the form, or it expired.

Form W-8BEN-E (for Entities)

Same idea as the W-8BEN, but for foreign corporations, partnerships, and other entities receiving US-source income. If you own a foreign company that receives dividends, royalties, or interest from the US, this is the form your company submits.

Form W-8ECI (for ECI)

If the income you’re receiving is effectively connected to a US trade or business, you submit Form W-8ECI instead of W-8BEN. This tells the payer not to withhold the 30% flat rate because the income will be reported and taxed on your US return at graduated rates.

Form W-9 (for US Persons)

If you formed a US company (LLC or corporation), that entity is a US person for tax purposes. US persons submit Form W-9, not W-8. The payer doesn’t withhold 30% NRA withholding on payments to a US entity. This is one reason investors consider forming a US company (more on that below).

Forming a US Company to Avoid Withholding: Does It Work?

Some NRAs hear “form a US LLC” and assume it solves the withholding problem. It’s more complicated than that.

When It Helps

US LLC or Corporation receiving the income directly. If a US entity receives dividends, performs services, or earns other income, the payer sends a 1099 instead of a 1042-S. There’s no NRA withholding on payments to a domestic entity. The entity files its own US tax return and pays tax at corporate rates (21% for a C-Corp) or passes the income through to owners (for an LLC taxed as partnership or S-Corp).

For rental real estate, this is a well-established structure. A US LLC owns the property, receives the rent, takes deductions, and the NRA owner pays tax on the net income through the partnership return. No 30% flat withholding on gross rent.

When It Doesn’t Help (or Makes Things Worse)

The Branch Profits Tax trap. If you form a US LLC or branch that earns ECI, you avoid the 30% FDAP withholding. But when the LLC’s profits are treated as “repatriated” to the foreign owner, the US imposes a Branch Profits Tax (BPT) of 30% on the “dividend equivalent amount.” Treaties can reduce the BPT rate, but it doesn’t disappear.

C-Corp double taxation. A US C-Corp pays 21% corporate tax on profits. When it distributes dividends to the foreign shareholder, those dividends are subject to 30% NRA withholding (reduced by treaty). So you pay tax twice: once at the corporate level and again on the distribution. For many income types, this is worse than just paying the 30% flat rate on FDAP.

Passive income structures face scrutiny. If you form a US LLC solely to receive investment income (dividends, interest, royalties) and the LLC has no real business activity, the IRS may look through the structure and apply withholding as if the income went directly to the foreign owner.

The Bottom Line on Entity Planning

A US entity makes sense when there’s a real business operation: rental property, active trade or business, services with US clients. It doesn’t make sense as a pure withholding-avoidance shell. The structures that work best combine entity planning with treaty benefits and proper W-8 documentation.

The ITIN Problem: You Can’t Get a Refund Without One

Here’s the catch that stops many NRAs from recovering their money: you need an Individual Taxpayer Identification Number (ITIN) to file a US tax return, and you need a US tax return to claim a refund.

No Social Security Number? No ITIN? No refund. The money sits with the IRS forever.

How to Get an ITIN

You apply by filing Form W-7 with the IRS, along with your tax return and original identification documents (passport, national ID card, etc.).

The problem: the IRS requires original documents or certified copies from the issuing agency. Most people don’t want to mail their passport to the IRS and wait 7-11 weeks to get it back.

The CAA Advantage

This is where a Certifying Acceptance Agent (CAA) makes the process dramatically easier. A CAA is an individual or firm authorized by the IRS to verify your identity documents in person (or via secure video call), certify copies, and submit the W-7 application on your behalf.

Benefits of using a CAA:

Keep your passport. The CAA certifies copies of your documents, so you never have to mail originals to the IRS.
Fewer errors, fewer rejections. CAAs review the W-7 before submission, catching common mistakes that would cause the IRS to reject the application.
Remote process. Many CAAs work with clients worldwide via video calls. You don’t need to be in the US.
Combined filing. The CAA can submit your W-7 together with your 1040-NR, so the ITIN application and refund claim happen in one package.

At Celeraxiom, our tax advisor Beatriz Carvalho is a Certifying Acceptance Agent authorized by the IRS. She handles the ITIN application process from start to finish: document verification, W-7 preparation, and submission alongside your 1040-NR return. Whether you’re in Florida, Brazil, or anywhere else, we can get your ITIN processed without you mailing your passport to the IRS.

Step-by-Step: How to Claim Your Refund

Gather your documents. You need your Form 1042-S (from the payer), your passport, and any other income documentation (W-2, 1099, K-1).

Figure out the ITIN situation. No Social Security Number or existing ITIN? You’ll need one. Contact a CAA to start the process before anything else.

Prepare Form 1040-NR. Report the income from your 1042-S, apply any treaty benefits (with Form 8833 attached), calculate your actual tax liability, and claim the withholding shown on the 1042-S as tax already paid.

File the return. If applying for an ITIN at the same time, the W-7 and 1040-NR are mailed together. If you already have an ITIN, the return can be e-filed through a tax professional.

Then you wait. IRS processing times vary. Returns with ITIN applications take longer (11-14 weeks for the ITIN alone, then additional processing for the return). Returns filed electronically with an existing ITIN are faster (typically 6-8 weeks for refunds).

Common Mistakes to Avoid

Not filing at all. Many NRAs assume the withholding is final and don’t file a return. If you’re from a treaty country, you could be leaving thousands on the table.
Filing without an ITIN. The IRS rejects returns without a valid TIN. Get the ITIN sorted first (or apply simultaneously with the return through a CAA).
Forgetting Form 8833. If you’re claiming treaty benefits, you must attach Form 8833 disclosing the treaty position. The penalty for skipping it is $1,000.
Not submitting W-8BEN before payment. Prevention beats cure. If you know you’ll receive US-source income, give the payer a W-8BEN ahead of time so they withhold at the treaty rate instead of 30%.
Assuming a US LLC fixes everything. Entity formation has its place, but it creates new obligations (annual returns, potential BPT) and doesn’t automatically reduce tax. Plan the structure before you form it.
Missing the filing deadline. Refund claims on Form 1040-NR must be filed within 3 years of the return’s due date. Wait too long and you lose the right to claim the refund entirely.

The Bottom Line

Form 1042-S reports US-source income paid to NRAs and the tax withheld (usually 30%)
Your refund potential depends on income type (FDAP vs. ECI) and whether your country has a tax treaty with the US
Gambling winnings: refundable for treaty countries with a gambling provision, not refundable for countries without one
Service income: the FDAP vs. ECI classification determines your tax rate and whether you can take deductions
W-8BEN prevents over-withholding. Submit it before receiving payment whenever possible.
Forming a US entity helps for real business operations but doesn’t work as a pure withholding-avoidance strategy
You need an ITIN to file and claim your refund. A Certifying Acceptance Agent makes the process simpler and keeps your passport safe.

How Celeraxiom Can Help

At Celeraxiom, we specialize in NRA tax returns and withholding recovery. Our team includes Beatriz Carvalho, a Certifying Acceptance Agent (CAA) authorized by the IRS, who handles ITIN applications remotely so you never have to mail your passport. We prepare Form 1040-NR, apply treaty benefits, and recover over-withheld tax on gambling winnings, dividends, royalties, service income, and rental income. Whether you got a 1042-S from a casino, a brokerage, or a US client, we can tell you exactly how much you’re owed and get it back.

Frequently Asked Questions

I received a 1042-S showing 30% withholding on dividends. My country has a treaty rate of 15%. Can I get the other 15% back?

Yes. File Form 1040-NR reporting the dividend income, claim the 15% treaty rate, and the 15% difference between what was withheld and what you actually owe will be refunded. You’ll need to attach Form 8833 and have a valid ITIN. For future payments, submit a W-8BEN to the payer so they withhold at 15% from the start.

I’m Brazilian and won money at a Las Vegas casino. Can I recover the 30% they withheld?

Unfortunately, no. The US-Brazil tax treaty doesn’t include a provision for gambling winnings. The 30% withholding is the correct and final tax for Brazilian nationals on US gambling income. Countries like Canada, Japan, and the UK have treaty provisions that reduce gambling withholding to 0%, but Brazil doesn’t.

Do I need an ITIN just to receive income from the US?

To receive the income, no. The payer will withhold 30% and pay you the rest with or without an ITIN. But to file a tax return and claim a refund of over-withheld tax, yes, you need an ITIN. Without one, you can’t file, and without filing, the IRS keeps the withheld amount.

What’s the difference between a W-8BEN and a W-9?

A W-8BEN is for foreign persons (nonresident aliens and foreign entities). It certifies your foreign status and can claim treaty benefits. A W-9 is for US persons (citizens, residents, and US entities like LLCs and corporations). If you formed a US LLC that receives the income, the LLC submits a W-9 because it’s a domestic entity. If you personally receive the income as a foreign individual, you submit a W-8BEN.

How long does the ITIN application take, and can I speed it up?

The IRS takes 7-11 weeks to process a W-7 ITIN application. Using a Certifying Acceptance Agent (CAA) doesn’t bypass IRS processing times, but it significantly reduces the chance of rejection (which would add another 7-11 weeks for resubmission). A CAA also lets you keep your original passport instead of mailing it to the IRS, which is the biggest practical benefit for people living outside the US.