My tax advisor found that I overpaid $500 in AMT in 2020 because somehow the cost basis for my short term stock sale was not reflected in the AMT form. He suggested I amend the return, which I am trying to do via my Desktop TT but I am not sure what's the right place to do it. I located AMT section under "Other Tax Situation" in the Amend flow, tried entering 46,902.00 (the cost basis) for either "I need to make an AMT adjustment to my investment income or expenses." and later "I reported disposition of assets or property but didn't record their depreciation history in this return. And the AMT depreciation deductions for those assets are different from regular tax depreciation deductions.", however the "fed tax owed" turned $500 as if I owe extra $500 - though I already paid the $500 AMT. The goal is to remove it instead by providing the cost basis. So my question is - how would I provide the $46,902 cost basis for the AMT purposes? See the sale's info below.
Time Description Shares Proceeds Cost Gain / (Loss) Proceeds Cost Gain / (Loss)
ST XYZ 226.00 4 6,827.00 46,902.00 (75.00) 4 6,827.00 4 6,827.00
