Sorry---there is not a way to add banking information to TurboTax for your stimulus check. You enter banking information to your tax return in order to receive a refund as a direct deposit. You cannot change it after you file. TurboTax is not a portal to add banking information for the 3rd stimulus check.
Further---you do not add banking information to amended returns since the IRS only mails checks for amended returns--they do not make direct deposits.
You will have to deal with receiving a check for the 3rd stimulus when it is issued if the IRS does not have your banking information.
TurboTax cannot track your 3rd stimulus or tell you when it will arrive. The IRS is issuing 3rd stimulus checks on its own timetable.
You can use the IRS Get My Payment site to see what is expected for your 3rd stimulus check:
https://www.irs.gov/coronavirus/get-my-payment
https://www.irs.gov/coronavirus/get-my-payment-frequently-asked-questions
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
