Child support calculator by state

Estimate monthly child support for any US state with quick inputs. Results are educational estimates only and not legal advice — always consult a family law professional for your situation.

Harbor is $9.99/month or $49.99/year per person after a 7-day trial and includes messaging, expenses, a custody calendar, and Temperature Check. Use the app named in a court order if one is specified.

Child support estimate calculator

Estimate only, not legal advice. This is intentionally lighter than official worksheets.

State

Number of children (4 = 4+)

Your monthly income

Co-parent monthly income

Your parenting time

State formulas vary and can include deductions, childcare, health insurance, and other factors not captured here. Always verify with your state's official calculator.

All state calculators

Select your state for a localized child support estimate.