Form 1042-S: When Foreign Persons Receive US-Source Income
Updated June 2026 · Reviewed by a Form 5472 specialist
Updated June 2026 · Reviewed by a Form 5472 specialist
The short answer
Key takeaways
Form 1042-S is the return a withholding agent files to report US-source income paid to a foreign person — interest, dividends, royalties, rents, compensation — and the tax withheld on it. The payer files it; the foreign person receives a copy.
Form 1042-S sits inside the US withholding regime for cross-border payments. When a US person or institution pays certain kinds of US-source income to a foreign person, the payer generally must withhold tax (often 30% unless a treaty reduces it) and report the payment on Form 1042-S. The form goes to the IRS, and a copy goes to the foreign recipient so they can document the income and any credit for tax withheld.
The withholding agent — not the recipient — bears the filing duty. If you are a foreign LLC owner who received US-source income, you might find a Form 1042-S in your mailbox from the payer. How that income is taxed to you is a separate question covered in effectively connected income.
Form 1042-S reports income paid to a foreign person and is filed by the payer. Form 5472 reports transactions between a 25%-foreign-owned US entity and its foreign related parties and is filed by the US entity. They answer different questions and are not interchangeable.
The two forms are frequently confused because both touch foreign persons and US-source money. The cleanest way to separate them is by who files and what is being measured.
| Form 1042-S | Form 5472 | |
|---|---|---|
| What it reports | US-source income paid to a foreign person | Related-party transactions with the US entity |
| Who files it | The withholding agent / payer | The 25%-foreign-owned US entity |
| Deadline | March 15 | April 15 (Oct 15 with 7004) |
| Penalty focus | Withholding & reporting by payer | $25,000 per form, per year on the entity |
| E-file | Often yes (FIRE system) | Never for a foreign-owned SMLLC |
Source: IRS Instructions for Forms 1042-S and 5472. Verified June 2026.
A foreign LLC owner can easily have both in play: the bank or platform files a 1042-S for income paid to you, while your LLC files its own 5472 for the transactions between the company and you. One does not substitute for the other.
When you were paid US-source income subject to withholding — for example, US-source dividends or certain interest. Most passive US bank interestpaid to a foreign person is exempt and not reported. Your LLC’s own transactions belong on Form 5472, not 1042-S.
Not every dollar a foreign person receives from the US generates a Form 1042-S. The form appears when there is a reportable, withholdable payment — dividends from a US corporation, certain interest, royalties, or compensation for US services. A large and important exception is ordinary US bank deposit interest paid to a non-resident, which is generally exempt from withholding and not reported.
Critically, money moving between you and your own LLC is not a Form 1042-S matter — that is precisely what Form 5472 exists to capture. If you funded your LLC or took a distribution, that belongs on the LLC’s Form 5472. When a payer does need to know your status to withhold correctly, they ask for a Form W-8BEN from you as the foreign recipient.
The W-8BEN is what a foreign person gives the payer to certify foreign status and claim any treaty-reduced withholding rate; the 1042-S is what the payer then files to report the payment and the withholding actually applied.
These two forms work as a pair on the same payment. Before paying a foreign person, a withholding agent collects a Form W-8BEN (from an individual) or W-8BEN-E (from an entity) to establish that the recipient is foreign and whether a tax treaty reduces the default 30% withholding rate. After paying, the agent reports the income and the withholding on Form 1042-S.
Choosing the wrong certification form is a common and costly error — an entity that submits a W-8BEN meant for individuals can trigger backup withholding at the full rate. The difference between the two is explained in Form W-8BEN vs W-8BEN-E, and the individual form is walked through in how to fill out Form W-8BEN.
Form 1042-S is due to the IRS by March 15, with a copy to the recipient. Form 5472 is due April 15 (October 15 with Form 7004). The deadlines are a month apart and governed by entirely different rules.
The March 15 date belongs to the payer’s withholding return, not to you as the recipient — but it tells you when to expect your copy. Your own obligation as a foreign LLC owner is Form 5472, due April 15. Because the two deadlines sit a month apart and concern different filers, it is easy to conflate them and miss the one that is actually yours.
Keep them straight: a Form 1042-S arriving in March is informational for you. The Form 5472 your LLC must file by April 15 is the one carrying the $25,000 penalty if missed. Details on that filing are on the annual compliance page.
Your LLC must file Form 5472 with a pro forma Form 1120 by April 15 for every year it had a reportable transaction. Virtually every foreign-owned SMLLC has one — funding the LLC counts — and the penalty for missing it is $25,000. It cannot be e-filed.
Whatever Form 1042-S does or does not show up in your mailbox, your foreign-owned single-member LLC has its own filing duty under IRC §6038A. Since 2017, final regulations (T.D. 9796) treat these disregarded entities as corporations for Form 5472 reporting, and the trigger — a reportable transaction such as a capital contribution — is met by almost every funded LLC. The penalty is $25,000 per form, per year, with no cap and no statute of limitations under IRC §6038A(d) and §6501(c)(8).
A foreign-owned SMLLC cannot e-file: the pro forma Form 1120 with Form 5472 attached must be mailed to 1973 Rulon White Blvd, M/S 6112, Attn: PIN Unit, Ogden, UT 84201 or faxed to 855-887-7737. Note this is separate from BOI reporting — under FinCEN’s March 2025 interim final rule, US-formed entities are exempt from beneficial-ownership reporting. The annual obligation is summarized on the annual compliance page.
The IRS charges nothing to file, but a late or wrong Form 5472 costs $25,000 per form, per year. A specialist files Form 5472 plus the pro forma 1120 for a flat $299, versus $547 at form5472.online and $1,999/year at doola.
DIY filing is free but unforgiving — the $25,000 penalty applies even to an honest mistake or a missed deadline, and a foreign owner abroad cannot easily fix a rejected mailing in time. For a flat $299, form5472.tax prepares, reviews, and files your Form 5472 with the pro forma 1120, well below the $547 at form5472.online and the $999–$1,499/year bundles at Firstbase and doola. Compare on the pricing page or start on the apply page.
A 1042-S is informational. Your LLC's Form 5472 is mandatory. We prepare and file it plus the pro forma 1120 for a flat $299. Or message us first.