If you discover a mistake on your federal return and it was
already accepted by the IRS, you will have to amend it by filing a 1040X. These
mistakes may include not reporting some income from a form that came later than
expected, claiming deductions or credits you shouldn't have claimed, failing to
claim some deductions or credits to which you are entitled, or needing to
change your filing status.
Contact your local Liberty Tax
Service office for help with filing a 1040X.