Doesnt he have to apply for support for there to be back support? So far he hasnt because he is unaware of the procedure. When I go to the child support calculator it tells me that my income is not enough and bumps me up 200 to the states minimum. Then it says I pay too much for insurance. State max for insurance is 7%. I pay 295 and make 1157 a month. Would be more but I drive school bus and have for 13 yrs and my income is averaged out over 12 months even though I only work 10. I am trying to find full time employment but the economy sucks.