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

Special Situations

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

BBA Partner non-income tax changes reported on Form 8986. Although the Form 8978 is used to figure changes to a partner's income tax as reported to them on Form 8986, any non-income tax changes that are related to the income tax adjustments on the Form 8986 received by the partner, such as self-employment tax or net investment income tax, should be

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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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