Many couples attempt to reconcile after breaking up or divorcing. Moving back in together can effect a parent’s obligation to provide child support. If the parent who is obligated to pay child support is contributing to the support of the household, he or she may be entitled to a credit for their child-support obligation. In a recent case, a mother challenged a court’s order giving the father a credit against back child support for the period of time when they had lived together with the children.