Calculate Child Support for Any U.S. State or Territory
Fast, easy-to-understand child support estimates tailored to all 50 states and every U.S. territory — built with the clarity and care this moment deserves.
Estimates only — never legal advice. Your inputs stay on your device.
California uses the Income Shares model.
Estimate only — not legal advice. Final orders depend on court review.
Coverage that doesn't stop at the state line.
Most calculators forget U.S. territories. We don't. Estimate support whether you live in California, Connecticut, or the Commonwealth of the Northern Mariana Islands.
From overwhelming to understandable in three steps
No legalese. No surprise upsells. Just a calm, accurate path to a number you can plan around.
Tell us about your finances
Income for both parents, the number of children, and parenting time. Nothing more than needed.
We apply your jurisdiction's formula
Income Shares, Percentage of Income, or Melson — the model your state actually uses.
See a clear, supportive estimate
A monthly number with a plain-English breakdown so you understand exactly where it came from.
Find your state. Understand your rules.
Each jurisdiction uses a specific formula. Tap a state — or pick a U.S. territory — to see exactly which one applies.
We'll walk you through every input this formula needs — and show how each one moves your estimate up or down.
Calculate for this jurisdictionStart with the states most parents look up
Of course every state and territory is supported — these are just the ones our community uses most.
Parenting time changes everything.
Most states adjust support based on how many overnights each parent has. Move the slider, and watch your estimate update in real time — so you can plan the schedule that works for your family.
Try the shared custody calculatorSee two futures, side by side
Compare custody arrangements, income changes, or even two different states — without redoing the math.
Numbers help. Support helps more.
Practical, judgment-free resources for the human side of co-parenting.
Tools for the bigger picture
Child support is one piece. We help you put the rest together.
Answers, in plain language
If you don't see your question, our help center has more — or message a real human.
Learn every tool in one place
A complete, downloadable guide to every calculator, forecasting tool, report, and planning resource on the site — all completely free to use.
USChildSupportCalculator.com User Guide
Step-by-step walkthroughs for the calculator, shared custody tools, scenarios, forecasting, expense tracking, reports, and AI features — written for everyday users.
Calmer co-parenting, in your inbox.
Monthly tips, financial guidance, and law updates for parents — written by humans, not lawyers.