I imported my 2022 return using TurboTax Deluxe for Windows and the
Massachusetts Schedule B line 18
Prior short-term unused losses for years beginning after 1981 (from 2022 Massachusetts Schedule B, line 40) was left blank.
As a result, my short term losses for 2023 were not being offset, and the calculated tax was too high for 2023 by a significant amount.
I entered the correct loss value from the PDF of the 2022 return and the calculation reduced the MA Tax due.
This is something I uncovered only by careful review of the forms.
Was this an error in Turbo Tax that was subsequently corrected? I imported return some while back. I always update TurboTax but if there was an error it would likely not reflect when the import was done earlier.