Okay---you do not really know if that check was even mailed. The CP21B said a check would be issued---but the IRS is so severely backlogged that it is possible that they have not sent the check out yet---things are happening at a much slower pace during the pandemic. There should be an 800 number on the letter that you can call to see if the check has actually been sent.
As for the IRS using any address other than the one on the Form 1040X----doubtful they would check your spouse's 2020 return and use that address instead of the address on the amended return.
@Critter Any thoughts on this one?
**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.**
