Thanks. I compared the two forms and noticed that the QBI deduction on line 13 of form 1040 reduced. Tracing it to form 8995A, I see that TT earlier showed an amount on line 2 as Qualified Business Income related to a rental property, whereas now it shows a zero value.
Not sure why. Also, I see now that the difference doesn't quite add up to what IRS says I owe.
There's probably an explanation for all of this, but at this time, I guess it's best to just pay up.
Thanks VolvoGirl for the help!
