If you haven't filed then follow these instructions:
- Login to your TurboTax
Account
- Click “Take Me To My Return”
- Click on the Search box and type
“W-2”.
- Click on “Jump to W-2”.
-
Click on "add another W-2"
If your return has been already accepted by the IRS,
you will have to file an amended return
(1040X) to make changes. But you might want to wait until your refund or
payment is processed. The IRS will only accept amended returns via mail.
Please see the following information on how to amend your
return:
https://ttlc.intuit.com/replies/7276596