MISTAKE

[HODANOU]

HI THERE, ON MY FEDERAL TAXES, I MISTAKINGLY OMITTED ONE DIGIT NUMBER IN ONE BOX, SO MY (AGI) IS MISSING ONE DIGIT. I HAVE ALREADY SUBMITTED MY TAX RETURN; HOW DO I CORRECT THIS WITH THE IRIS, PLEASE HELP.

[DoninGA]

To make a change on a filed tax return you will need to amend the 2021 tax return that you filed.

You will have to wait for the IRS to either Accept or Reject your filed federal tax return.
If the return is rejected you can make the necessary changes and e-file again.
If the return is accepted you will have to amend your original tax return. An amended return, Form 1040-X, can only be printed and mailed to the IRS if the original tax return was not e-filed. The IRS will take up to 16 weeks or longer to process an amended tax return.

Before starting to amend the tax return, wait for the tax refund to be received or the taxes due to be paid and processed by the IRS.

See this TurboTax support FAQ for amending a 2021 return - https://ttlc.intuit.com/community/tax-return/help/how-do-i-amend-my-2021-return/00/2544441

[Mike9241]

in some cases, usually where the IRS gets a tax reporting form like a w-2 or 1099, it catches the mistake and adjusts automatically so no amended return may be required.  you have to wait to see what the iRS does.

[SweetieJean]

MY (AGI) IS MISSING ONE DIGIT

Do you mean the 2020 AGI you need to efile 2021?  If so, your 2021 return would have been rejected, so fix the AGI and submit it again.