If you discover an error after your return has been filed, you may need to amend your return. The IRS may correct errors in math on a return and may accept returns with certain forms or schedules left out. In these instances, do not amend your return! However, do file an amended return if there is a change in your filing status, income, deductions, or credits. Also, if the Form 8938 (PDF), Statement of Specified Foreign Financial Assets, applies to you, see Filing Form 8938 after filing 2011 or 2012 annual returns in the Form 8938 Instructions.