Trying to use the What-If Worksheet in TT2024 Deluxe Windows desktop version. I want to start by copying my actual 2024 return into column 2 and then adjusting it, but it puts some different numbers into column 2.
SE Health insurance deduction is different, and can't be edited in the worksheet. Tax from Schd D or qual div is different, can't be edited. Premium tax credit repay is hugely different, can't be edited. Line 55 (add line 48-54) doesn't even show correctly in column 1 (i.e., line 55 doesn't show the sum of lines 48-54); in column 2 it would be mathematically correct IF it was the sum of lines 47-54, but that's not what it is. In itemized deductions, medical and dental expenses is identical in columns 1 and 2, but allowable medical and dental expenses is different (and can't be edited). Mortgage interest doesn't appear in column 2, but at least that one I can manually fix unlike all the rest.
This would be bad enough, but just "copying" column 1 to column 2 produces hugely different tax liabilities, leaping from about $6,000 up to about $27,000! The biggest driver appears to be that my tax return (and column 1) show that I have to repay $2,800 of ACA advance subsidy, while column 2 -- which is supposed to be just a copy of column 1 -- says that I have to repay $21,200!
What is even going on here??? Which calculation is actually correct? I hope it's column 1, because that's the one that I filed, but then what is going on with column 2??? Is the What If worksheet known to be totally broken? Should I not use it?
