I just came across this in the instructions for Form 1040, line 45:
Exception. Fill in Form 6251 instead of using the worksheet if you claimed or received any of the following items.
...
- Income or (loss) from tax-shelter farm activities, passive activities, partnerships, S corporations, or activities for which you aren't at risk.
I know that owning residential rental properties is a passive activity, but I've owned rental properties for several years, and TaxAct has never generated a Form 6251, and the IRS has never complained about their absence.
Can anyone explain this (apparent) discrepancy?