Child Support Calculator

How Child Support Calculators Work

Child support calculators use the income shares model, which is employed by most US states. This model considers both parents' gross incomes, the number of children, custody arrangements, and sometimes healthcare and childcare costs. The calculator produces an estimated monthly obligation that approximates what a family court might order. Keep in mind that judges retain discretion to deviate from guidelines when circumstances warrant.

Child Support Laws in the United States

Federal law requires every state to have a child support guideline formula, though states vary in their specific approach. The income shares model (used by most states), the percentage of income model (used by Wisconsin and other states), and the Melson formula (used by Delaware, Hawaii, and Montana) are the three primary approaches. All 50 states have child support enforcement agencies that can assist with collection.

Child Support by State

Amounts vary significantly by state. High cost-of-living states like California, New York, and Massachusetts tend to produce higher support orders. States like Texas use a simple percentage model: 20% of net income for one child, 25% for two, up to 40% for five or more children. Always consult your state's official child support guidelines or a family law attorney for the most accurate estimate.

Calculate Child Support by State

Frequently Asked Questions