Child Support in Texas: How Much Will You Owe?

Quick answer: it depends on both parents' incomes, how many children you have, and the parenting schedule. The calculator on this page turns those numbers into a real guideline estimate in about a minute. It is an educational estimate, not legal advice, and the judge always sets the final amount. FamilyCourtHelp.com is a self-help resource, not a law firm.

Wondering how much child support you will owe or receive in Texas? The state uses one formula everywhere, so the same math applies in every county. This page explains how it works, lets you run a live estimate, and links to a dedicated page for each county at the bottom.

Texas applies fixed percentages of the obligor's monthly net resources, 20% for one child, 25% for two, 30% for three, 35% for four, and 40% for five or more, capped at a statutory net resources ceiling that is adjusted periodically. Net resources start with gross income from all sources and are reduced by Social Security and federal income taxes calculated on a single person's tax liability, union dues, mandatory retirement, and the cost of health insurance for the children.

What counts as income? Texas runs the formula on income after certain allowed deductions are taken out. Net resources include 100% of all wage and salary income, self-employment income, severance pay, retirement, pensions, trust income, annuities, capital gains, unemployment, disability, workers' compensation, and rental income, minus federal income tax (single, one exemption), Social Security taxes, state income tax (if any), union dues, and child health insurance premiums.

Parenting time matters in Texas, but not as an automatic formula: the judge can adjust the guideline number when one parent has substantial time with the children. Texas does not use an overnight or shared-time formula the way many states do. The guideline percentage is applied to the paying parent's monthly net resources regardless of how the visitation schedule is split. Parenting time can still matter because a court may treat it as a deviation factor under Tex. Fam. Code §§ 154.061-154.130, but the percentage guideline is presumed reasonable, so extra time with the child does not automatically lower the number.

When does it end? Texas child support generally ends at age 18 or upon graduation from high school, whichever is later. Disabled adult children may receive indefinite support under Tex. Fam. Code § 154.302.

Can the amount change later? File a petition in district court or request review through Texas OAG. A 20% or $100 monthly variance, or a material and substantial change after at least 3 years, supports modification.

If payments fall behind, Texas has real enforcement tools. Texas OAG enforces through immediate income withholding, tax intercept, license suspension, lien filings, credit reporting, passport denial, and contempt referrals to court with potential incarceration. Texas is one of the most aggressive enforcement states in the country.

Child support cases in Texas are generally handled through the state's District Court, and Texas Office of the Attorney General, Child Support Division runs the state's child support services program. Forms and local practice can vary, so confirm the current details with your local court or the agency.

The calculator on this page is the same live engine behind our full Child Support Calculator. Enter both incomes, the number of children, and the overnight split, and the estimate updates instantly. The full calculator page adds extras like health insurance, child care costs, and saved scenarios.

Bottom line for Texas: the guideline number comes from incomes, children, and parenting time. Run the estimate on this page, keep your paperwork honest and complete, and let the court confirm the final amount.

Frequently asked questions

How much child support will I owe in Texas?

There is no flat amount. Texas uses the Percentage of Net Resources model under Tex. Fam. Code §§ 154.061-154.130, so the number depends on both parents' incomes, the number of children, and the parenting schedule. The calculator on this page gives you a guideline estimate, and the court sets the final amount.

When does child support end in Texas?

Age 18, or upon graduation from high school, whichever is later. Disabled adult children may receive indefinite support.

Can the child support amount be changed later in Texas?

Usually yes, when circumstances change enough. A 20% or $100 monthly change between the existing order and a new guideline calculation, or a material and substantial change in circumstances after at least 3 years.

Who handles child support cases in Texas?

Cases are generally heard in the state's District Court, and Texas Office of the Attorney General, Child Support Division handles services like locating parents, establishing orders, and collecting payments.