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Instructions for Form 1040-X›Notice 2023-21. For the following affected taxpayers, Notice

Specific Instructions

Instruction 1040-X — Instructions for Form 1040-X, Amended U.S. Individual Income Tax Return · 2026-10-03 edition · updated 2026-10-04 · United States

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▸Contents — Instruction 1040-X — Instructions for Form 1040-X, Amended U.S. Individual Income Tax Return
Instruction 1040-X — Instructions for Form 1040-X, Amended U.S. Individual Income Tax Return

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