Child Support — Calculators, Guides & State Rules
Find your state's official child support guidelines and calculator, understand how support is calculated, and get answers to common questions.
Child Support by StateUnderstanding Child Support
Child support is the financial obligation one parent has to the other for the costs of raising their shared children. In the United States, every state calculates child support differently — using income shares models, percentage-of-income formulas, or hybrid approaches — which means the amount can vary significantly depending on where you live.
The factors courts typically consider include both parents' gross incomes, the number of overnight stays each parent has, healthcare costs, childcare expenses, and any special needs the children may have. Understanding how these factors interact in your state is the first step to knowing what to expect.
Child support disputes are also one of the most common triggers for conflict between co-parents. When payments are missed, disputed, or used as leverage in custody disagreements, communication breaks down quickly. This hub gives you the calculation tools and state-specific information you need to stay informed — and links to communication resources when disputes get heated.
Browse official child support resources by state, read the detailed guides on how support is calculated, and explore what average payments look like nationally and by state.
Quick Navigation
Child Support by State
Browse official guidelines and calculators for all 50 states
How Child Support Is Calculated
Income shares, percentage of income, Melson model
Average Child Support Payments
National and state-by-state averages
California Child Support Guide
CA-specific guidelines and estimates
Texas Child Support Guide
TX percentage of income model
Florida Child Support Guide
FL income shares guidelines
Respond to Child Support Disputes
When financial disagreements turn hostile
Child Support Guides
Child Support by State
Select your state for official guidelines and calculator resources.
Common Child Support Questions
How is child support calculated?
Most states use either an income shares model (combining both parents' incomes) or a percentage of income model (based on the paying parent's income alone). Delaware, Hawaii, and Montana use the Melson formula.
Can child support be modified?
Yes. Either parent can petition for a modification when there is a significant change in circumstances — such as job loss, income increase, or a change in custody arrangements.
What happens if child support isn't paid?
Unpaid child support can result in wage garnishment, tax refund seizure, license suspension, contempt of court, and in serious cases, jail time.
Does 50/50 custody affect child support?
Yes. In most states, equal time-sharing reduces but does not eliminate child support. The exact amount depends on the income difference between parents and your state's guidelines.
Child support disputes often come up when:
One parent's income changes significantly
Custody time is redistributed between parents
A parent loses a job or gets a major raise
The children's needs change (medical, education)
One parent remarries and household income shifts
A parent moves to a different state
Related Guides & Tools
Child support disputes rarely happen in isolation — they connect to custody schedules, co-parenting communication, and documentation needs.
Communication Hub
Co-Parenting Communication
When financial disputes turn into hostile messages — here's how to respond calmly and stay measured.
Related Hub
Custody Schedules Hub
Custody time directly affects child support. Understanding your schedule helps you understand your obligations.
Documentation
Co-Parent Documentation System
Document missed payments, disputed expenses, and financial conflicts for organized records.
Also Need Help Communicating?
Disputes about child support often create difficult co-parenting communications. Use our AI response generator to craft calm, court-appropriate replies.
Generate a Co-Parent ResponseChild support estimates are for informational purposes only. Actual amounts are determined by courts based on your state\'s specific guidelines and your individual circumstances. Consult a licensed family law attorney for advice specific to your situation.