dmertz
Level 15

Get your taxes done using TurboTax

This probably has something to do with the increase in AGI caused by the entry of the LTCG.  Do you have Social Security income of which more is getting taxed due to the increase in AGI?  Any decrease in tax credits due to the increase in AGI?

 

Compare Form 1040 with an without the LTCG to see what else if being affected.