@Ozce
" 2-If I have to return an amended return, what form should I use to inform IRS of the situation? "
Form 1040-X.
Do not attach your old 1040 nor your revised 1040 because the Form 1040-X reflects any changes there and becomes your new tax return.
Attach any other new or changed forms or schedules resulting.
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Excess Roth contribution. Pub 590-A
"If you timely filed your 2022 tax return without withdrawing a contribution that you made in 2022, you can still have the contribution returned to you within 6 months of the due date of your 2022 tax return, excluding extensions. If you do, file an amended return with “Filed pursuant to section 301.9100-2” written at the top. Report any related earnings on the amended return and include an explanation of the withdrawal. Make any other necessary changes on the amended return."
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I don't know if TurboTax will add the annotation.
If it won't, you have two choices.
A) File a paper Form 1040-X
B) Put the annotation in Part III Explanation and e-File 1040-X
