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

Paid Preparer

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

Generally, anyone you pay to prepare your amended return must sign it and include their Preparer Tax Identification Number (PTIN) in the space provided. The preparer must give you a copy of the amended return for your records. Someone who prepares your amended return but doesn’t charge you shouldn’t sign.

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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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