That answer just goes back to claiming the adult child as a dependent. If they are over the age of 16 then they are not eligible for the child tax credit but are eligible for the Other Dependent credit of $500. Any dependent on a tax return who is age 17 or older can be eligible for the Other Dependent credit, not just a disabled dependent. This is on a federal tax return.
As for a state return, which state will you be reporting the adult child as a dependent?
