in the future please start your own thread. tax laws change and the situations may not be identical
did you repay in the same year you got the bonus or in the following year? it matters.
same year the amounts on the w-2 (boxes 1 through 6 and possibly some others) would be adjusted so it would be like you never got the bonus.
same year - the case where a change in social security taxes would matter is when originally you had multiple employers and went over the social security limit. that excess was a tax credit. now with the revised w-2 that credit amount is reduced so you owe.
if in the following year was the repayment more than $3,000. if not you get neither a deduction nor credit for the repayment. if it was, what you do is either take an itemized deduction for the repayment or a tax credit. the credit is computed by recomputing your taxes in the prior year without the bonus. the difference in taxes becomes a tax credit reported on the return for the year of repayment as section 1341 credit line 13xz of schedule 3.
not sure what you are doing since we can't see your return.
