While that is true, it does not mean that they will owe Kiddie Tax (8615) on their unearned income. Because the test for 8615 is different that just being a dependent. There is actually a good but old Kitces article on the topic. I just can't figure out how to remove the 8615 from TT without going into the form and overriding the X box.
Exerpt from the Kitces article: "However, it’s important to note that the “support” test itself for the kiddie tax is not the same as the support test for determining dependent status; for the kiddie tax, earned income must exceed at least one half of the child’s support needs (regardless of how it is spent), while dependent status is determined based on whether the child actually paid/provided for at least one-half of his/her own support (regardless of whether funded from earned or unearned income). Thus, a dependent child could still avoid the kiddie tax (but having earned income in excess of one-half of support needs, but not actually spending money on his/her own support), while a child could avoid being a dependent but still face the kiddie tax (if the child provided more than one-half of his/her own support, but had little or no earned income)."
