After you file

Request a free transcript of your federal return from the IRS. A transcript is used to verify income and most financial institutions accept it as a substitute for your original tax return. IRS Transcript….
http://www.irs.gov/Individuals/Get-Transcript

 

Or order an exact copy of your tax return (including all attachments) from the IRS. There is a fee per tax return. See http://www.irs.gov/taxtopics/tc156.html for complete instructions