What to do about the CP2057 notice:
https://www.irs.gov/individuals/understanding-your-cp2057-notice
To see what you filed save a PDF of the return (if you have not yet done so) then compare what the IRS and you have ... did you miss something as the IRS insinuated ? Call the number on the notice if you don't understand it.
Select a tax year for specific amending instructions.
Keep in mind: You have 3 years from the date you filed your return (or 2 years after you paid the tax due, whichever is later) to file an amended return, which means you don't have to get it done by the April 15 filing deadline.
