Child support calculations are used to determine how much money the non-custodial parent should pay the custodial parent each month in child support payments. Calculations are typically done by the judge, who takes several factors into consideration. The judge will look at the amount of money made by both parents, the number of children involved in the case, what kinds of expenses the non-custodial parent has and more. Once these things are calculated, the judge will order the non-custodial parent to pay a certain amount each month. In some cases, the non-custodial parent may be forced to pay an additional amount, which will cover the medical care of the children in question. If at any time, the non-custodial parent feels that he or she is unable to pay the amount ordered by the court, they can request a child support modification. This means that the judge will take a closer look at the financial situation and determine whether a new child support amount should be ordered or not. Individuals who will be attending child support court should consider hiring a child support attorney to represent them and fight for their best interests.