It is not possible to e-file an amended return, nor is it possible to e-file any 2018 return at all now. E-filing for 2018 returns closed in October of 2019. The only way to file an amended return is to print, sign and mail it.
**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.**
