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Form 3921 (Rev. April 2025)
For more information, see Form 6251, Alternative Minimum TaxIndividuals, and its instructions. Employees taxpayer identification number (TIN).
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2023 Instruction 1040
Dec 27, 2023 For 2023, you will use Form 1040 or, if you were born before January 2, 1959, you have the option to use. Form 1040-SR.
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f1040--2023.pdf
Single. Head of household (HOH). Married filing jointly (even if only one had income). Married filing separately (MFS). Qualifying surviving spouse (QSS).
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