Get your taxes done using TurboTax

yes ideally TT would provide a drill down to see what makes up the subtraction but unfortunately not

 

if the CA subtraction is smaller by some smaller amount then my guess is it's being reduced by premium or accrued interest adjustments, so did you have anything in 1099-INT Box 12, 1099-OID Box 6 etc?  Did you enter any adjustments so far, or just what was reported on the 1099s?