Child Support Calculators for All 50 States & D.C.
Pick your state to see its official guideline model, statute-cited rates, and an instant estimate. 46 states use a loaded official schedule; 5 show a clearly-labeled model estimate while we verify each table.
Full U.S. coverage
Every state + D.C., one hub.
Statute-cited
Each figure links to its state law.
Official schedules
46 states loaded from agency tables.
3 models explained
Income Shares, Percentage & Melson.
Go beyond a basic estimate
Three planning tools that set ChildSupportFig apart — work backwards, model a life change, and compare every state at once.
Reverse calculator
Target a monthly payment → see the income it implies under your state’s guideline.
Open →⇄What-if simulator
Compare two scenarios — a raise, custody change, or added costs — side by side.
Open →≣Cross-state compare
See how the same income produces different obligations across all 50 states + D.C.
Open →Select your state
Green = official schedule loaded. Red = model estimate pending verification.
How U.S. child support models differ
- Income Shares (41 states + D.C.): both parents’ incomes are combined, matched to a schedule, then split proportionally — plus child-care and health-insurance add-ons and a parenting-time credit. Deep dive →
- Percentage of Income (6 states): a flat or graduated percentage of only the paying parent’s income — the simplest model, shown here with verified statutory rates. Deep dive →
- Melson Formula (3 states): Income Shares plus a self-support reserve and standard-of-living adjustment (Delaware, Hawaii, Montana). Deep dive →
Guides & articles
Plain-English explainers for parents and payers — each links straight to the calculators.
What Is Child Support?
A plain-English primer on what child support is, who pays it, what it covers, and how it differs from other family-law obligations.
The mathHow Is Child Support Calculated?
The three U.S. guideline models explained — Income Shares, Percentage of Income, and the Melson Formula — and the inputs that move the number.
Model deep-diveWhat Is the Income Shares Model?
The most common U.S. child-support model, explained: combined income, the basic-obligation schedule, proportional splitting, and add-ons.
Model deep-diveWhat Is the Percentage of Income Model?
The simplest U.S. model: a flat or graduated percentage of the paying parent’s income. How the six states apply it.
State resources, on every page
Each state calculator now includes a resources section with how that state calculates support, how to open or modify a case, illustrative examples, frequently asked questions, and direct links to the official statute and child-support agency. Where we are still verifying a section against primary sources, it is clearly marked “coming soon.”
Compare & learn
See how the same income produces different obligations across states on the cross-state comparison tool, browse the full child support by state table, read the model guides, or start with the basics articles.
Hero photo by Cheung Yin on Unsplash.