This is archived information that pertains only to the 1996 Tax Year If you are looking for information for the current tax year, go to the Tax Prep Help Area .
Many people realize that they have made errors on returns that have already been mailed.
If the errors are in arithmetic, the service center will usually correct them. If forms or schedules were left out, the service center will request additional information from you. You need not file an amended return. However, if you find that you did not report some income, you claimed deductions or credits you should not have claimed, you failed to claim some deductions or credits you are entitled to, or you should have used a different filing status, you should file an amended return. The form you use to correct the Form 1040, 1040A, or 1040EZ you already have filed is Form 1040X, Amended U.S. Individual Income Tax Return.