A Form 1042-S may be required for a royalty paid to a foreign author, a taxable scholarship paid to a nonresident student, reportable interest paid to a foreign investor, or service income for work performed in the United States.
Form 1042-S instructions help withholding agents connect those facts to the right income, exemption, withholding rate, and status codes.
Read on to understand who needs to file Form 1042-S, what payments belong on it, which codes need attention, and the 2026 Form 1042-S deadlines.
What Form 1042-S Reports
Form 1042-S reports certain U.S.-source income paid to foreign persons, along with any federal tax withheld. Even the form’s full title, Foreign Person’s U.S. Source Income Subject to Withholding, points to the first checks withholding agents must make: who received the income, where the income came from, and how withholding was handled.
The form is used for certain payments reported under Chapter 3 and Chapter 4 rules. Before filing, withholding agents should also review the payment type, recipient status, treaty claim, withholding rate, and the IRS codes that apply.
Who Should File Form 1042-S?
You will have to file Form 1042-S if you are a withholding agent who paid a reportable amount to a foreign person. Anyone who controls, receives, holds, disposes of, or pays an amount subject to withholding can count as a withholding agent.
Examples of withholding agents include:
- U.S. businesses paying foreign individuals or companies
- Universities paying foreign students, scholars, or researchers
- Banks and other financial institutions paying investment income
- Partnerships and trusts
- Platforms paying reportable U.S.-source income to foreign sellers or contractors
- Organizations paying U.S.-source royalties, taxable scholarships or grants, or U.S.-source service income to foreign persons
Payments Commonly Reported on Form 1042-S
Many Form 1042-S payments are U.S.-source FDAP income, short for fixed, determinable, annual, or periodical income. The table below shows common payment types and the main reporting point to check.
| Payment type | How it usually shows up on Form 1042-S |
|---|---|
| Interest | Reportability depends on the type of interest; for example, some U.S. bank deposit interest is not reportable, while portfolio interest may be reportable. |
| Dividends | U.S.-source dividends paid to a nonresident alien are reportable for any amount, and 30% withholding applies unless a lower treaty rate applies. |
| Royalties | U.S.-source royalties paid to a nonresident alien are reportable for any amount, and withholding applies unless a treaty reduces or removes it. |
| Scholarships and fellowships | Taxable U.S.-source scholarship and fellowship amounts are reportable; qualified scholarship amounts are not taxable. |
| Independent personal services | U.S.-source nonemployee service income is generally reportable, even if a treaty exempts the full amount. |
| Pensions and annuities | U.S.-source pensions and annuities are reportable for any amount over zero, with withholding on the taxable portion unless a treaty reduces or removes it. |
| Gambling winnings | Often reportable when the winner is foreign. |
| Partnership distributions | Partnership ECI allocated to foreign partners and certain PTP distributions can trigger special section 1446 reporting and withholding rules. |
| Real estate or PTP-related payments | Certain PTP interest transfers and some real-property-related distributions may be reported on Form 1042-S, but some FIRPTA items are reported on Form 8288-A instead. |
How to Know If Form 1042-S Is Required
- Pin down the recipient’s status: Start with the tax documentation, such as Form W-8BEN, W-8BEN-E, W-8ECI, W-8EXP, or W-8IMY. These tell you whether the recipient is foreign and whether a treaty or exemption claim is in play. If the recipient is a U.S. person, do not use Form 1042-S; use the applicable U.S. reporting form, such as a 1099-series form or Form W-2.
- Name the income type: The next step is to identify what was actually paid. Dividends, royalties, partnership distributions, scholarships, and payments for services each follow different reporting rules.
- Check the source: Form 1042-S is generally tied to U.S.-source income, but the source is not determined by the payer’s address alone. For Form 1042-S, the source depends on the income type. Interest, dividends, royalties, services, scholarships, and partnership income can each follow different source rules, so see the related source rule based on income type.
- Apply the withholding rule: As a rule of thumb, most U.S.-source FDAP payments to foreign persons are subject to 30% withholding unless a treaty, code exception, or special rate applies.
- Report even when nothing was withheld: Zero withholding is not the same as zero reporting. If the payment is reportable, Form 1042-S may still be required.
How to File Form 1042-S Online
After you confirm that Form 1042-S is required, prepare the return through IRIS or an approved eFile provider.
Step 1: Fill in the payer and recipient details
The first step is to check the payer and recipient details and then fill those in accurately. Enter the withholding agent’s name, address, EIN, and contact details correctly first. Then, fill in the recipient’s legal name, address, country, and any required U.S. TIN, FTIN, or GIIN.
Note: Keep the supporting tax form with the record, such as Form W-8 or Form 8233, because that documentation explains the recipient status or treaty position used on Form 1042-S.
Step 2: Enter the income and tax amounts
The form should show the gross income before reductions, along with the withholding rate and federal tax withheld. If tax was withheld by another agent, paid by the withholding agent from its own funds, or repaid after overwithholding, those amounts need to be reflected in the right fields because they change the final withholding picture.
Step 3: Select the correct IRS codes
You will need to select the right income code, Chapter 3 and Chapter 4 withholding agent status codes, recipient status codes, exemption codes, country codes, and withholding rates.
| Filing detail | Why it matters |
|---|---|
| Income code | Identifies what kind of payment it was |
| Recipient status codes | Identifies the recipient’s Chapter 3 status and, when required, Chapter 4 status |
| Exemption code | Explains why Chapter 3 or Chapter 4 withholding was reduced, zero, or not applied |
| Country code | Shows the recipient’s country of residence and supports any treaty or exemption position |
| Withholding rate | Must match the Chapter 3 or Chapter 4 rate used for the payment |
| Gross income | The full reportable figure, not the net |
Step 4: Review for common errors
Before you submit, scan for missing codes, invalid rates, blank required fields, wrong recipient details, and any gap between a treaty claim and the rate you used.
Step 5: File with the IRS and send recipient copies
The recipient copy and IRS Copy A are generally due by March 15. If you file Forms 1042-S on paper, attach Form 1042-T as the paper transmittal.
Form 1042-S Deadlines
| Filing task | General deadline |
|---|---|
| Furnish recipient copy | March 15 |
| File Copy A with the IRS | March 15 |
| Attach Form 1042-T if filing paper Forms 1042-S | March 15 |
Note: If March 15 falls on a weekend or legal holiday, the deadline shifts to the next business day.
The FIRE-to-IRIS Switch You Can’t Ignore
A major change is underway in how these forms get eFiled. The IRS is retiring its long-running FIRE system at the end of 2026, and the Information Returns Intake System, or IRIS, takes over as the intake platform.
As a result, while either IRIS or FIRE may be used to eFile 2025 Forms 1042-S, 2026 Forms 1042-S, due March 15, 2027, must be eFiled through IRIS.
IRIS already accepts Form 1042-S. However, your existing FIRE Transmitter Control Code (TCC) does not carry over, so you’ll need a separate IRIS TCC. The typical IRIS TCC processing period is 45 business days, but timing can vary, so it’s recommended that you apply well in advance to be able to file and furnish within the deadline.
IRIS also checks required fields and file formatting during submission, so missing codes, invalid values, or format errors can stop or reject a filing.
Does OBBBA Affect Form 1042-S?
The One Big Beautiful Bill Act (OBBBA) changed several tax and information-reporting areas, but it does not directly change the core Form 1042-S reporting rules for 2026. For Form 1042-S, withholding agents still need to determine the income type, recipient status, treaty or exemption claim, withholding rate, and correct IRS codes.
A previous version of the bill had a proposed Section 899 “retaliatory tax” that could have increased U.S. tax for certain foreign persons connected to countries with “unfair foreign taxes,” such as digital services taxes. But that proposal was not included in the final OBBBA, so it does not add a new Form 1042-S reporting rule for 2026.
Common Form 1042-S Filing Mistakes
Here are some of the most common Form 1042-S-related errors to avoid:
- Assuming no Form 1042-S is needed just because the payment is under $600
- Using a 1099-series form for income that belongs on Form 1042-S
- Treating treaty-exempt income as if Form 1042-S is never required
- Reporting the net payment instead of the gross income
- Leaving out income, exemption, withholding agent status, or recipient status codes
- Applying a withholding rate that does not match the recipient documentation or treaty claim
- Waiting until March to collect Form W-8, Form 8233, or other required recipient documentation
Why File Form 1042-S Online?
Form 1042-S is code-heavy, and each return needs accurate recipient details, income classification, withholding amounts, treaty or exemption details, and the right IRS codes.
Manual preparation can make it easier to miss a required code, use the wrong withholding rate, or catch documentation problems too close to the March 15 deadline.
Filing online can help withholding agents manage the details that make Form 1042-S difficult to prepare manually, including recipient documentation, income codes, withholding rates, exemption details, and recipient copies.
With 1099Online, withholding agents can prepare Form 1042-S, check the required fields before filing, eFile with the IRS, furnish recipient copies, and manage corrections from one place.
The platform also helps keep payer, recipient, and filing records organized, which is especially useful when you are handling multiple foreign payees or different payment types.
FAQs
1. Do foreign contractors receive Form 1042-S or Form 1099-NEC?
Foreign contractors generally receive Form 1042-S when they are foreign persons paid reportable U.S.-source income, such as service income for work performed in the United States.
2. Is Form 1042-S required when a treaty reduces withholding to zero?
Yes. Reportable income still needs to be reported on Form 1042-S even when a treaty reduces withholding to zero, using the proper exemption code.
3. Can Form 1042-S be corrected after filing?
Yes. You can file a corrected Form 1042-S if the recipient details, income code, exemption code, withholding amount, or withholding rate were wrong the first time.
Avoid last-minute 1042-S filing issues. Use 1099Online to organize recipient details, apply the right codes, eFile, and furnish copies on time.