Like others in this thread, I need to adjust stock basis for AMT as the stock was purchased multiple years ago as an ISO exercise.
From what I see and read here and elsewhere, the only way to do this is by lump sum adjustment of investment income in the "Let's adjust your investment income" page. The "gain" figures entered on that page however, do not seem to have any effect on Form 6251 line 1k. No matter what I do, that line always seems to be zero (so the AMT gain is exactly the same as the standard capital gain).
As I posted here:
https://ttlc.intuit.com/community/taxes/discussion/amt-adjustment-bug-in-2023/00/3229912
it looks to me like Turbotax has a bug....but I'd be happy to be shown otherwise....
