There is no amendment process for a 2021 return yet --- the 1040X you need will not be available until late March.
But....look at your 2021 Form 1040. Is there an amount on line 30? If there is an amount there---you are getting the 3rd EIP as part of your refund.
PREVIEW 1040
https://ttlc.intuit.com/questions/1901539-how-do-i-preview-my-turbotax-online-return-before-filing
Click on Tax Tools on the left side of the screen. Click on Tools. Click on View Tax Summary. Click on Preview my 1040 on the left side of the screen.
**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.**
