I have a similar question. Realized I had missed capital losses in previous years because my broker statements showed the wrong basis. Had to amend 2016 forward by paper since they don't accept electronic amendments pre-2019 but I have been waiting FOREVER (9+ months) for them to process. As a result, I still have not filed 2019's return at all because I fear it will be rejected if the capital loss I'm carrying forward was never processed into the IRS's system (return is completed and ready to go but apparently filing is not actually required if you're getting a refund). Well now we're almost at the filing deadline for 2020 and they STILL have not processed my amendments. I can file an extension but I will probably owe $ this year and I'm not even confident they will have my amendments processed by October. There is apparently nothing that can be done for them to expedite the processing. How the heck are we supposed to comply with their deadlines when they won't do their part? Any recommendations on what to do? I really don't want to just file anyway, have all my returns rejected, and then be dealing with this for the next frigging decade. Help!!
