If for any reason you need to amend a previously filed tax return, you must use Form 1040X. Use this form if you reported incorrect information on your original return that affects your tax liability.

Form 1040X, Amended U.S. Individual Income Tax Return

The file is in Adobe portable document format (PDF), which requires the use of Adobe Acrobat Reader.

To get a free version of Adobe Acrobat Reader software, go to the Adobe web site.

For more information, see our discussion on paying your taxes.

• FREE electronic filing with paid processing.
  
  
• CompleteTax prepares both your federal and resident state returns.
  
  
• File electronically and you may qualify to use our Refund Anticipation Loan (RAL) service, which lets you get your refund FAST!
  
  
• Our useful Tax Guide provides tax tips and straightforward answers to your tax questions.
  
  
• If you owe a balance on your taxes, you can conveniently pay it by credit card. This service is available for federal taxes and certain states.
  
  
• Take advantage of FREE e-mail support, or an online chat service that gets your technical questions answered for a small fee.
  
  
• Learn how to file an Amended Return.