Electronic filing available for Form 1040-X. You can file Form 1040-X electronically with tax filing software to amend 2020 or later Forms 1040 and 1040-SR, and 2021 or later Forms 1040-NR. See IRS.gov/Filing/Amended-Return-Frequently-Asked-Questions for more information. Use these instructions with both the paper-filed July More @Wikipedia
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