Free Child Support Calculator
Estimate your monthly child support in minutes — using each state's official formula. No sign-up, and your numbers never leave your browser.
How Much Is Child Support?
Enter your income to estimate child support in any state
Optional for Percentage of Income states (TX, MS, WI, AK)
Or go straight to your state
How It Works
Select Your State
Each state has its own formula. We use the official guidelines for all 50 states and D.C.
Enter Your Income
Provide your monthly income, number of children, and optional details like custody time.
Get Your Estimate
Instant estimate with a full breakdown. No signup, no email, completely free.
All State Child Support Calculators
All 50 states + D.C. • Official guidelines • Our methodology
Learn About Child Support
How Much Is Child Support?
Compare costs across all 50 states by income level.
What Is Child Support?
A complete guide to how child support works in the US.
How Does Child Support Work?
Learn the process from filing to enforcement.
Is Child Support Taxable?
Tax implications for both the payer and recipient.
2026 Child Support Changes by State
New income caps, updated schedules, and formula changes across 10 states.