Only certain paid tax prosusing professional tax software can e-file past year amended returns. You cannot e-file an amended return that you prepared yourself using TurboTax.Your 1040X must be printed, signed and dated in ink, and then you need to mail it in.Use a mailing service like certified mail so you will know the IRS received it, since you will have a long wait for it to be processed.
Do not expect quick results from amending. It can take four months or more for the IRS to process an amended return.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**