Form 1040-NR Withholding Attachment Order Guide for 1042-S, 8805, and 8288-A (2025-2026)
Nonresident return flow (Form 1040-NR)
How a nonresident individual reports U.S.-source income to the IRS.
Classify the income
Effectively connected (ECI) vs. fixed/determinable (FDAP).
Gather U.S.-source documents
1042-S, K-1, or other statements of U.S. income.
Prepare Form 1040-NR
ECI on the main form; FDAP on Schedule NEC.
File and reconcile withholding
Credit amounts already withheld at source.
Key Takeaways
- Forms 8805, 8288-A, and 1042-S belong on different Form 1040-NR withholding lines.
- The instructions separate front-of-return and back-of-return attachments intentionally.
- Do not collapse specialized withholding into line 25c.
- A withholding-to-line-number memo makes assembly much safer.
Form 1040-NR withholding lines are separated because the attachments are separated too
The 2025 Instructions for Form 1040-NR distinguish line 25e for Forms 8805, line 25f for Forms 8288-A, and line 25g for Forms 1042-S. They also say not to include tax from Forms 8805, 8288-A, and 1042-S on line 25c. This is not just a line-placement issue. It is part of how the return organizes very different withholding regimes.
If a preparer dumps all withholding into one bucket, the return becomes harder to verify and the attachment instructions are more likely to be missed.
Front-of-return versus back-of-return placement is deliberate
The instructions say copies of Forms W-2, 1042-S, SSA-1042S, RRB-1042S, and 8288-A are attached to the front of Form 1040-NR, while Forms 8805 are attached to the back. That sounds old-fashioned, but it is still the official assembly instruction. The point is to keep the return package consistent with how the IRS expects different withholding documents to be processed.
For paper returns especially, this matters more than many international filers expect.
The withholding memo should tie forms to line numbers before assembly starts
A reliable process maps each withholding document to its return line first, then builds the attachment stack. Which 1042-S amounts belong on line 25g? Which 8805 amounts go on line 25e? Was there section 1445 or 1446(f) withholding shown on 8288-A for line 25f? Once that memo exists, the assembly order becomes simple.
Without it, withholding-heavy 1040-NR returns are where perfectly real credits start to disappear during preparation.
Frequently Asked Questions
Where does Form 1042-S withholding go on Form 1040-NR?
The 2025 Instructions for Form 1040-NR place it on line 25g and direct filers to attach the Forms 1042-S to the front of the return.
Where does Form 8805 go in the assembly order?
The instructions say to attach Forms 8805 to the back of the return.
Can I report 1042-S or 8288-A withholding on line 25c instead?
No. The instructions specifically separate those forms from line 25c and assign them to lines 25f and 25g as applicable.
IRS Form 1040 Instructions
Official IRS source on irs.gov
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