Hi ramji, i didn't understand what did you mean that tax refund is in w2? well tax deducted is in w2, doesn't mean you are getting all back.sometime most people have to pay on top of what has already been deducted. It depends also, ok here if you are low income and your tax has been deducted , the depending upon which catergory you fall under your tax will be refunded.And yes it is possible as they might have used wrong calculation to deduct your tax first of all. if you did it from professional , they may be right.i am not tax consultant i am just sharing my knowledge what i know.