My ex-wife is on social security disability. A 17 year old son lives with me and is getting benefits from the government because of her disability. We have a 20 year old son who goes to college out of state that is paid by me. I want to claim both kids on my taxes because she can't claim the younger because he lives with me and since I pay for the older ones college, I was want to claim him also. My ex was wondering what she would be losing out on by not being able to claim either child? Is there any way for her to claim a tax benefit when she has no earned income?