You cannot change or add anything on the return that you just e-filed, nor can you stop it. It is too late, just like when you put an envelope in a US mailbox
Now you have to wait until the IRS either rejects or accepts your return. If your return is rejected, you will be able to go into your account and make the necessary changes to your tax return and re-submit your return.
If the IRS accepts your return, however, then you have to wait longer until it has been fully processed and you have received your refund. THEN you can prepare an amended tax return and mail it in. You will need to use a form called a 1040X. You cannot e-file an amended return. They have to be mailed, and it takes at least 2-4 months for the IRS to process an amended return. Meanwhile, DO NOT go in and start changing anything on your return in the system, or you will make a mess for yourself. Sit tight and wait until you see what the IRS does with the return you just e-filed
You will need to wait to see if your tax return has been accepted or rejected by the IRS.
If rejected, simply log back into your return, and enter your 1098-T form.
If your return is accepted, you will need to amend your return using Form 1040-X (not available until about mid-February).
Form 1040X can't be e-filed per IRS regulations.
After you finish amending in TurboTax, we'll guide you through printing and mailing your 1040X along with any required attachments.
\Three weeks after mailing your amendment, you can start tracking it at Where's My Amended Return? on IRS.gov.