Form detail
IRS Form 1042-S
Foreign Person's U.S. Source Income Subject to Withholding
Country
United States
Revision year
2026
Methods
paper, efile
Updated
2026-05-04
Foreign Person's U.S. Source Income Subject to Withholding
Information return used to report U.S.-source income paid to foreign persons and the withholding, exemption, or treaty result attached to that payment.
Who must file: Withholding agents, intermediaries, and certain other payers that must report U.S.-source income paid to foreign persons and the amounts withheld or exempted.
Practical overview
Form 1042-S is the downstream proof of how a withholding decision was actually reported. When treaty forms, withholding certificates, or FDAP classifications are mishandled, the problem often becomes visible here first because the form has to reconcile the payee type, income code, exemption logic, and withholding amount.
Practical steps
- Classify the payment correctly and determine the income code, recipient status, and treaty or exemption result.
- Collect and validate the underlying withholding documentation, including any applicable W-8 forms.
- Prepare the recipient copy and the IRS filing using the correct income, exemption, and withholding data.
- Reconcile the form with the related Form 1042 and payment records before filing.
Due-date notes
Recipient statement and IRS filing are generally due by March 15 following the calendar year of payment.
Timing: March 15 following the calendar year of payment
Penalty snapshot
Information-return penalties and withholding exposure can apply if Forms 1042-S are late, missing, or materially incorrect.
Related forms
W-8BEN · Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting (Individuals)
W-8BEN-E · Certificate of Status of Beneficial Owner for United States Tax Withholding and Reporting (Entities)
8833 · Treaty-Based Return Position Disclosure Under Section 6114 or 7701(b)
Related guides
Related citations
Computed from the cross-reference graph. Links open the related entity on this site.
This entry cites
- FormIRS W-8BEN
- FormIRS W-8BEN-E
- FormIRS 8833
Cited by
- FormIRS W-8BEN
- FormIRS W-8BEN-E
- FormIRS 1040-NR
Primary sources
- About Form 1042-SVerified 2026-05-04
- Instructions for Form 1042-SVerified 2026-05-04
Important disclaimer
This library is for general tax education only. Always verify filing obligations, due dates, and tax consequences against the cited primary source or with a qualified tax professional.