Oops! You’ve discovered an error after your tax return has been filed. What should you do? You may need to amend your return.
The IRB usually corrects math errors or requests missing forms (such as W-2s) or schedules. In these instances, do not amend your return. However, do file an amended return if any of the following were reported incorrectly:
• Your filing status
• Your total income
• Your deductions or credits
Use Form 1040X, Amended U.S. Individual Income Tax Return, to correct a previously filed Form 1040, 1040A, or 1040EZ return. Be sure to enter the year of the return you are amending at the top of Form 1040X. If you are amending more than one tax return, use a separate 1040X for each year.
Form 1040X has three columns. Column A is used to show original or adjusted figures from the original return. Column C is used to show the corrected figures. The difference between the figures in Columns A and C is shown in Column B. You should explain the items you are changing and the reason for each change on the back of the form.
If the changes involve another schedule or form, attach it to the 1040X. For example, if you are filing a 1040X because you have a qualifying child and now want to claim the Earned Income Tax Credit, you must complete and attach a Schedule EIC to the amended return.
If you are filing to claim an additional refund, wait until you have received your original refund before filing Form 1040X. You may cash that check while waiting for any additional refund. If you owe additional tax for 2015, Form 1040X must be filed and the tax paid by April 15, 2016, to avoid any penalty and interest.
You generally must file Form 1040X to claim a refund within three years from the date you filed your original return, or within two years from the date you paid the tax, whichever is later.