What all do I have to file with the 1040x?

[AmyT · Accepted solution]

When you mail Form 1040-X you should include the following forms:

• The new (amended) Form 1040
• Any forms or schedules that were added or changed as a result of preparing the amendment

Please note that 1040-X cannot be e-filed - you will need to mail a paper return.  It takes the IRS at least 2 - 3 months (and sometime up to 6 months) to process amended returns.  Also, depending on whether the changes affect your numbers, you may also be required to file an amended return with your state.  

The mailing address for you state and situation can be found at https://www.irs.gov/pub/irs-pdf/i1040x.pdf.  Look under Where to File on page 14.