California has a statewide child support formula based upon net incomes and certain other factors which is known as guideline support. Each family law judge and attorney has software to calculate guideline child support. This software is also available online. However, correctly inputting the information is critical to arrive at an accurate result. In addition to guideline child support, parents can be ordered to share the cost of their children’s uninsured health costs and to share the cost of their children’s sports, lessons and other extracurricular activities.