Child Support Calculator
Estimate monthly child support using your state's official guideline formula. Most states (41) use the Income Shares model, which calculates support based on both parents' combined income and the percentage typically spent on children. Enter your information below for instant results.
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Fill in the form to get an estimated child support amount based on your state's guidelines.
How Child Support Is Calculated
Child support calculations vary by state, but most follow one of three models. Understanding your state's approach helps you prepare for what to expect.
Income Shares Model (41 States)
The most common approach. Combines both parents' incomes and determines what percentage would have been spent on the child if the family stayed together. Each parent then contributes based on their share of the total income.
States: Alabama, Arizona, California, Colorado, Connecticut, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Michigan, Minnesota, Missouri, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming
Percentage of Income Model (6 States)
A simpler approach that takes a flat percentage of the non-custodial parent's income. The percentage increases with the number of children.
States: Alaska, Arkansas, Mississippi, Nevada, North Dakota, Texas
Melson Formula (3 States)
A more complex version of Income Shares that first ensures each parent can meet their own basic needs before calculating support. Provides a minimum self-support reserve.
States: Delaware, Hawaii, Montana
Frequently Asked Questions
How is child support calculated?
Child support is calculated using your state's guideline formula, which considers both parents' incomes, custody time split, number of children, and additional expenses like childcare and healthcare. Most states (41) use the Income Shares model, which determines the child's share of combined parental income.
Does custody time affect child support?
Yes, custody time (parenting time percentage) affects child support in most states. The parent with less custody time typically pays support to the other parent. Some states have significant custody thresholds where support calculations change.
Is this calculator legally binding?
No. This calculator provides estimates for planning purposes only and does not constitute legal advice. Actual child support amounts are determined by the court based on your specific circumstances. Always consult with a family law attorney for legal guidance.
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