When paper-filing Form 1040-X for a 1040-NR amendment, do I really attach a whole corrected 1040-NR behind it?
I am a founder from Brazil and need to amend my 2024 Form 1040-NR because we found an omitted Form 1042-S and also need to revise the foreign tax credit. I was expecting Form 1040-X to be just a cover form explaining the changes, but my preparer says the paper package also needs a fully corrected Form 1040-NR behind it.
That sounds like duplicating the whole return, so I want to make sure this is actually what the IRS instructs. If the amended package requires a corrected underlying return plus the changed schedules in sequence order, I would rather assemble it correctly once than guess.
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