Schedule D Tax Worksheet *should* result in the same tax as from the Qualified Dividends and Capital Gains Tax Worksheet. However, there seems to be a bug in line 12 of the Schedule D Tax Worksheet:
Line 12 is not treating a blank in line 11 as a zero. Line 12 is the smaller of line 9 or line 11, but the value from line 9 is picked up instead of the zero from line 11.
The effect of this bug is that cap gains will be taxed as ordinary income instead of at the cap gains rate of 0%, 15%, etc.
It would appear that this can be fixed by overriding the blank line 11 with 0 (zero) in the Schedule D Tax Worksheet when used with Form 8615. (Unfortunately, electronic filing may balk.)
