If you have filed your tax return and then discover that you have an additional W-2 to file you will have to wait until the IRS either accepts or rejects your tax return.
If the return is rejected you can add the new W-2 and refile your return.
If the return was accepted by the IRS then you will have to file an amended tax return using Form 1040X to add the W-2 to your tax return.
This link to the TurboTax Help page How to amend (change or correct) a return you already filed provides information on how to amend your tax return.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
