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i can't find where to sign the 2021 taxes
If you are filing by mail then look on page 2 of your Form 1040 ----near the bottom you will see the words "Sign here"----you sign and date it in ink. If it is a joint return both spouses need to sign.
If you are e-filing then you "sign" electronically by entering your AGI. There is no physical signature on the tax form when you e-file.
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