Does child support still have to be paid to an ex-wife if the child of the marriage (his 16 year old daughter) is not living at home, attending school and is working full time? My partner's ex is claiming a back child support payment for a period of 3 months even though the daughter was not living with her. My partner arranged for a safe place for her to live after he found out she was sharing an apartment with a know drug user. He paid for her keep and expenses during the 3 months she was there which worked out over the amount of child support he would have paid while she was at home. The daughter has now returned to the home of her mother and the ex is trying to claim back dated child support for the period of time the daughter was not living with her. This would mean my partner would have paid twice. We live on a very tight budget, pay day to pay day and do not have the $1,800 she is claiming Help and advice please