Child support is the amount of money that a court will order one or both parents to pay every month to help support their child. California uses a statewide formula to reach a child support amount. It is referred to as the “guidelines calculation,” which takes into account both parents income, the higher earner’s monthly disposable income, how many children are involved, how much time each parent spends with the children, whether there is support of children from other relationships, health insurance expenses, and so on. Child support payments are typically made until children turn 18. However, these support payments may be ordered to extend until the child reaches 19 if the child is still in high school full time, living at home, and is not able to support him or herself. Every county in California has a local child support agency that can assist you in getting, collecting, or changing a child support order.