I filed amended returns for 2017 and 2018 in January of 2021, and I have the certified mail delivery confirmation showing that they were received by the IRS on Jan 14th, 2021. I have been checking the "Where's my amended return" website periodically, and as of today, almost 8 months later, the returns are STILL not showing up in their system. Shame on the IRS for being so quick to take our money but torturously slow in returning it (if they ever will...).
