Q. For the CT tax return, can I complete the state return on Turbo tax (I already bought it) and just mail that in?
A. Yes.
Q. Do you know if there is a section to include a statement that the tax was taken out in error?
A. I'm not specifically familiar with CT software & forms. But, apparently not, see https://portal.ct.gov/DRS/Individuals/Individual-Tax-Page/Nonresident---CT-Tax-Withheld-in-Error
[it appears that you should try to get a corrected W-2 (showing 0 in box 16) from your employer]
