I'm using TurboTax Premier 2021 to file federal 1040 for my child. It complains about "Form 8615: ParentsNetLTGain shouldn't be less than or equal to zero." Bug?

[longtimeuser20]

That entry comes from my Sch. D. line 15 Net long-term capital gain or (loss), which is negative due to net loss. So it appears to be a TurboTax bug.

[ThomasM125 · Accepted solution]

You are instructed to enter your long term capital gain from line 15 of schedule D. If the amount is negative, then you have a loss, not a gain. In that case, you should leave the entry blank.

[longtimeuser20]

Thanks, ThomasM125 for the answer. Perhaps the instruction should be updated to leave the field blank if line 15 of schedule D shows a capital loss...