I filed my 2020 income tax on April 10, 2020, then I got three late form 1099 composite corrections (last July 9, 2020). The corrections only increased the Capital Loss on Schedule D which already exceeded $3K, so it did not change my refund. However, since I want to use the increased capital loss carryover on my 2021 income tax return, I am assuming that I need to file an amended 2020 Income Tax Return to use the increased capital loss carryover. Or will IRS automatically track the increased capital loss carryover from the corrected 1099 filings?
If I need to file the amended 2020 return, how long do I wait after filing the amended 2020 return to file the 2021 return? I have already filed for an extension to the 2021 return.
