Rex says
Texas keeps this formula simple on paper — percentage times capped net resources — but the cap and add-ons are where real cases get complicated.
Try a scenario
Click to load — tweak from there.Inputs
Gross income minus taxes, Social Security, and health insurance premiums for the child
Result
Estimated monthly support (incl. health premium)
$1,000
Guideline percentage amount
$1,000
Guideline % applied (net resources)
20%
Net resources used (after cap)
$5,000
Psst — share this and help Rex grow
One click, a permanent link with your numbers baked in.
How to use this
- 1Enter obligor's monthly net resources ($) — Gross income minus taxes, Social Security, and health insurance premiums for the child.
- 2Enter number of children in this case.
- 3Enter statutory net-resources cap (editable, set by the texas office of the attorney general) ($).
- 4Enter child's health insurance premium paid by obligor ($/mo).
- 5Enter existing court-ordered support for other children ($/mo).
- 6Read your estimated monthly support (incl. health premium) on the right — it updates as you type.
- 7Hit Share to keep the scenario or send it to someone.
About this calculator
Estimates a guideline child support obligation in Texas using that state's percentage-of-net-resources model: the obligor's monthly net resources is capped at the statutory/editable cap, then multiplied by the guideline percentage for the number of children (1: 20%, 2: 25%, 3: 30%, 4: 35%, 5: 40%, 5+: same as 5). This is an estimate only, not legal advice — actual awards depend on the specific court, county guideline worksheets, and judicial discretion, and a judge may deviate from the guideline for good cause.
Worked example
Using the values the calculator loads with:
Inputs
- Obligor's monthly net resources: 5000 $
- Number of children in this case: 1
- Statutory net-resources cap (editable, set by the Texas Office of the Attorney General): 9200 $
- Child's health insurance premium paid by obligor: 0 $/mo
- Existing court-ordered support for other children: 0 $/mo
Results
- Estimated monthly support (incl. health premium): $1,000
- Guideline percentage amount: $1,000
- Guideline % applied (net resources): 20%
- Net resources used (after cap): $5,000
What each field means
Inputs
- Obligor's monthly net resources ($)
- Gross income minus taxes, Social Security, and health insurance premiums for the child
- Number of children in this case
- The number of children in this case used in the calculation. Starts at 1 so you have a working example on load. Accepted range: 1–7.
- Statutory net-resources cap (editable, set by the Texas Office of the Attorney General) ($)
- The statutory net-resources cap (editable, set by the texas office of the attorney general) used in the calculation, measured in $. Starts at 9200 $ so you have a working example on load.
- Child's health insurance premium paid by obligor ($/mo)
- The child's health insurance premium paid by obligor used in the calculation, measured in $/mo. Starts at 0 $/mo so you have a working example on load.
- Existing court-ordered support for other children ($/mo)
- The existing court-ordered support for other children used in the calculation, measured in $/mo. Starts at 0 $/mo so you have a working example on load.
Results
- Estimated monthly support (incl. health premium)
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Guideline percentage amount
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Guideline % applied (net resources)
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Net resources used (after cap)
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does Texas calculate guideline child support?
Texas uses a percentage-of-net-resources: the obligor's monthly net resources, capped at the statutory/editable cap, is multiplied by a percentage that increases with the number of children (20/25/30/35/40%).
Texas applies the guideline percentage only up to the statutory net-resources cap; resources above the cap can get additional support only if the requesting parent proves the child's proven needs exceed the capped amount.?
Texas applies the guideline percentage only up to the statutory net-resources cap; resources above the cap can get additional support only if the requesting parent proves the child's proven needs exceed the capped amount.
Does this include childcare or extraordinary medical costs?
Not automatically — this estimate covers the base guideline percentage plus the health insurance premium you enter. Courts in Texas can add childcare, uninsured medical, and extracurricular costs on top of the guideline amount.
Is this figure binding on a Texas court?
No. This is an estimate only, not legal advice — actual awards depend on the specific court, county guideline worksheets, and judicial discretion, and a judge may deviate from the guideline for good cause.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Texas Child Support Calculator (percentage-of-net-resources). Retrieved from https://www.revenuelab.fyi/toolbox/child-support-calculator-texas
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/child-support-calculator-texas" target="_blank" rel="noopener">Texas Child Support Calculator (percentage-of-net-resources) — RevenueLab</a> (2026).</p>
Source: [Texas Child Support Calculator (percentage-of-net-resources) — RevenueLab](https://www.revenuelab.fyi/toolbox/child-support-calculator-texas) (2026).