If the IRS rejects your E-Filed income tax return, you could add
the tax form.
If the IRS "Accepts" your
income tax return, you will have to amend your income tax returns. Wait for
the IRS to process your income tax return before you amend it.
If you are expecting a refund, check for the status at Where's My Refund? - It's Quick, Easy and Secure. - IRS.gov
See How to Amend (Change or Correct) a Return You Already Filed to
amend your income tax return.
