I would like to know if a parent of an adult student, who works part time and claimed herself when filling her taxes, which she had to do because of the amount of her income, can demand to see that adult child's W2 form. This adult student is from a divorced family and lives with her mother. The parent making the demand has not seen this adult child for over a year and refuses to have contact with her, although he does see his other 2 younger children for visitation. Does this adult child, she's 18, have to give in to his demand. He is doing this because he doesn't believe that she made enough to file her own taxes.