All I'm saying is I don't consider zero to be fair. Just as I don't consider the 39% my cousin pays to be fair either.
well of course zero is not fair. This could only be because he is not earning enough or they have not been informed of his income.

39% seems like a lot too, but again it is based on income and the number of children he is paying for. The 'self support' amount will never be included in the percentage, so the 39% is based on what he makes over that amount.