TX Child Support Calculator

Estimate Texas guideline child support in minutes, with a full tax breakdown, tax-year selection, and a companion Apple Watch app for quick estimates.

Texas Child Support Calculator estimates a monthly child support obligation using the Texas Family Code's guideline formula — the same method Texas courts and the Office of the Attorney General use.

Enter income, pay frequency, and deductions, and the app computes net monthly resources and the guideline obligation for your case, including credit for other children you support.

WHAT IT CALCULATES • Federal income tax, Social Security, and Medicare on employee and self-employment income, with correct self-employment tax handling • Union dues, health and dental insurance premiums (prorated by covered dependents), state income tax, and nondiscretionary retirement contributions • The guideline percentage for your number of children, adjusted for other children you support • A full breakdown: gross income, taxes, net monthly resources, and the final monthly obligation

TAX-YEAR AWARE Pick the tax year that applies to your case. Federal tax brackets, the Social Security wage base, and the statutory net-resources cap are all sourced from the same figures the Office of the Attorney General publishes each year, not generic tax software defaults.

ALSO INCLUDES • A standalone Apple Watch app for a quick estimate without your phone • Share your results • Full light and dark mode, Dynamic Type, and VoiceOver support

This app produces a guideline estimate for informational purposes only and is not legal advice. Actual child support orders depend on additional facts and judicial discretion under the Texas Family Code. Consult a family law attorney for advice about your specific situation.