If you only remember one point about how child support is calculated in Texas, remember this: Texas uses the Percentage of net resources (obligor) and measures income as net resources. Texas applies guideline percentages to the obligor’s monthly net resources (20% for one child, 25% for two, 30% for three, 35% for four, 40% for five, plus at least 5% more for six or more), up to a statutory net-resources cap that the Tit. IV-D agency periodically adjusts. Different percentages apply when the obligor has children in more than one household. Procedure, examples, and the opinions below hang off Tex. Fam. Code ch. 154. Support generally ends when Support generally continues until 18 or high-school graduation, whichever is later; longer support may apply for a disabled child. Modification: Material and substantial change, or a three-year lapse with a 20% or $100 difference from guidelines, under Fam. Code ch. 156.
Deviation from the guidelines
Courts may deviate based on the child’s needs, the parents’ ability to contribute, travel costs, and other Fam. Code § 154.123 factors.
When a court departs from the presumptive amount, Texas practice generally requires findings that explain why the guideline figure is unjust or inappropriate and what amount better serves the child's needs. Those findings matter on appeal and in later modification proceedings.
Walking through Texas facts
Use this walkthrough to see which Texas authority does the work at each step.
Two parents in Texas need a presumptive child-support figure and may have facts that justify a departure.
- Measure guideline income as net resources under Tex. Fam. Code ch. 154.
- Apply the Percentage of net resources (obligor): Texas applies guideline percentages to the obligor’s monthly net resources (20% for one child, 25% for two, 30% for three, 35% for four, 40% for five, plus at least 5% more for six or more), up to a statutory net-resources cap that the Tit. IV-D agency periodically adjusts. Different percentages apply when the obligor has children in more than one household.
- Test deviation: Courts may deviate based on the child’s needs, the parents’ ability to contribute, travel costs, and other Fam. Code § 154.123 factors.
- If circumstances later change: Material and substantial change, or a three-year lapse with a 20% or $100 difference from guidelines, under Fam. Code ch. 156.
The enforceable number is the Texas guideline result under Tex. Fam. Code ch. 154, plus any deviation findings. Office of the Attorney General Child Support Division uses income withholding, license suspension, intercepts, and enforcement suits.
Modification of child support
Material and substantial change, or a three-year lapse with a 20% or $100 difference from guidelines, under Fam. Code ch. 156.
A parent seeking a change typically must show that circumstances after the prior order make the existing award inequitable. Common triggers include job loss, substantial income changes, a new parenting-time schedule, emancipation of a child, or extraordinary medical needs. Retroactivity and temporary relief rules are statute-specific — check Tex. Fam. Code ch. 154 and local family-division procedures.
Enforcement in Texas
Office of the Attorney General Child Support Division uses income withholding, license suspension, intercepts, and enforcement suits.
Interstate cases often implicate UIFSA. Income withholding, contempt, license suspension, and tax-refund intercept remain core tools nationwide, but the Texas child support agency and clerk of court procedures control day-to-day collection.
When child support ends
In Texas, Support generally continues until 18 or high-school graduation, whichever is later; longer support may apply for a disabled child. Orders may extend for disability, secondary education, or other statutory grounds where the statute allows. Always read the judgment language — agreed orders sometimes set a different end date or require a notice of emancipation.
Case law: how Texas courts apply the guidelines
The opinions below are in the LawDiver corpus. Each block quote is taken from the opinion text so you can jump from this guide into the full decision.
In the Matter of the MARRIAGE OF Isis Spencer BUTTS and Rickey Sharnard Butts
…rvator of the couple’s child and awarding $800 per month in child support. Rickey also contends the judgment is void for vagueness. Because error is shown on the face of the appellate record, we affirm in part and reverse and remand in part for further proceedings. Background In 2002, Rickey and Isis were married and resided in Florida. Later that year, the couple had their onl…
Texas opinions such as In the Matter of the MARRIAGE OF Isis Spencer BUTTS and Rickey Sharnard Butts are cited where child support is disputed. The court stated: "Rickey also contends the judgment is void for vagueness. Because error is shown on the face of the appellate record, we affirm in part and reverse and remand in part for further proceedings. Background In 2002, Rickey and Isis were married and resided in Florida." That is the language to brief; the rest of the decision supplies the procedural posture.
In the Matter of the MARRIAGE OF Janet K. VOGEL and Timothy P. Vogel. in the Interest of Joshua L. VOGEL, a Minor Child
…(Timothy) perfected this appeal from an order modifying the child support order contained in a previous decree of divorce terminating his marriage to Janet K. Vogel (Janet). He contends, with eleven points of error, that the trial court erred in (1) reducing to judgment the arrearage for child support decreed by an unenforceable order; (2) computing the amount of arrear-age; (3…
On child support, In the Matter of the MARRIAGE OF Janet K. VOGEL and Timothy P. Vogel. in the Interest of Joshua L. VOGEL, a Minor Child speaks to the Texas dispute in this passage: "Timothy) perfected this appeal from an order modifying the child support order contained in a previous decree of divorce terminating his marriage to Janet K. Vogel (Janet)." The surrounding opinion shows how the court applied that language to the record.
In Re SUPPORTKIDS, INC., F/K/A Child Support Enforcement, Inc.
In Re SUPPORTKIDS, INC., F/K/A Child Support Enforcement, Inc., 2003 Tex. App. LEXIS 10061 (2003)
…ith Supportkids to retain its services in collecting unpaid child support owed to her by her ex-husband. Morris subsequently sought to cancel the parties’ contract, and, following a dispute between the parties, Morris filed the underlying lawsuit against Supportkids, in which she alleged causes of action for, among other things, violations of the Texas Debt Collection Act. 3 Du…
On child support, In Re SUPPORTKIDS, INC., F/K/A Child Support Enforcement, Inc. speaks to the Texas dispute in this passage: "Supportkids to retain its services in collecting unpaid child support owed to her by her ex-husband." The surrounding opinion shows how the court applied that language to the record.
In the Matter of the MARRIAGE OF Nancy Morrow EDWARDS and James R. Edwards and in the Interest of Robert Karl
…r, James R. Edwards attacks a modification order increasing child support. He contends that (1) the trial court had no power to modify his child support obligations because they were the product of contract between the parties, and that the court abused its discretion in ordering the modification because (2) the evidence was legally and factually insufficient to show material o…
On child support, In the Matter of the MARRIAGE OF Nancy Morrow EDWARDS and James R. Edwards and in the Interest of Robert Karl speaks to the Texas dispute in this passage: "James R. Edwards attacks a modification order increasing child support." The surrounding opinion shows how the court applied that language to the record.
in Re Supportkids, Inc., Formerly Child Support Enforcement, Inc.
in Re Supportkids, Inc., Formerly Child Support Enforcement, Inc. (2003)
…01-02-00803-CV ____________ IN RE SUPPORTKIDS, INC., F/K/A CHILD SUPPORT ENFORCEMENT, INC. Original Proceeding on Petition for Writ of Mandamus O P I N I O N By petition for writ of mandamus, relator, Supportkids, Inc. (Supportkids), challenges the trial court’s orders of July 3, 2002 and July 24, 2002, imposing sanctions on Supportkids for failing to timely and fully answer t…
Texas opinions such as in Re Supportkids, Inc., Formerly Child Support Enforcement, Inc. are cited where child support is disputed. The court stated: "CV ____________ IN RE SUPPORTKIDS, INC., F/K/A CHILD SUPPORT ENFORCEMENT, INC. Original Proceeding on Petition for Writ of Mandamus O P I N I O N By petition for writ of mandamus, relator, Supportkids, Inc." That is the language to brief; the rest of the decision supplies the procedural posture.
in the Matter of the Marriage of Charmane Diane Stephens and Douglas Val Stephens
in the Matter of the Marriage of Charmane Diane Stephens and Douglas Val Stephens (2007)
…rced, divided the parties’ estate, ordered that Douglas pay child support for the child of the marriage, and made other orders. Douglas appeals the decree on several grounds. We abate and remand for findings of fact and conclusions of law. Texas Family Code Section 154.130 provides: “Without regard to Rules 296-299, Texas Rules of Civil Procedure, in rendering an order of child…
Practitioners open in the Matter of the Marriage of Charmane Diane Stephens and Douglas Val Stephens when Texas child support turns on the distinction in this sentence: "Douglas pay child support for the child of the marriage, and made other orders. Douglas appeals the decree on several grounds. We abate and remand for findings of fact and conclusions of law. Texas Family Code Section 154." Do not lift it out of the facts the court was deciding.
in the Matter of the Marriage of Andrzej Adamski and Oksana Adamski
in the Matter of the Marriage of Andrzej Adamski and Oksana Adamski (2017)
…used its discretion by (1) ordering Andrzej to make monthly child support payments above statutory guidelines, (2) ordering a division of the marital estate and awarding attorney’s fees that did not conform to the parties’ premarital agreement, and (3) refusing to set aside a default judgment. Because the record does not support Andrzej’s contentions, we affirm. Background Andr…
Practitioners open in the Matter of the Marriage of Andrzej Adamski and Oksana Adamski when Texas child support turns on the distinction in this sentence: "Andrzej to make monthly child support payments above statutory guidelines, (2) ordering a division of the marital estate and awarding attorney’s fees that did not conform to the parties’ premarital agreement, and (3) refusing to set aside a default judgment." Do not lift it out of the facts the court was deciding.
Practical checklist for Texas child support matters
- Gather recent pay stubs, tax returns, and proof of health insurance / child-care costs.
- Complete the current Texas worksheet or financial affidavit required by the local court.
- Document parenting-time overnights if a shared-custody adjustment may apply.
- Flag facts that could support deviation (special needs, travel costs, high income, other children).
- Search LawDiver for recent Texas appellate decisions before mediation or trial.
Key takeaways
- Texas follows the Percentage of net resources (obligor) model for presumptive child support.
- Income is generally measured using net resources, then allocated under Tex. Fam. Code ch. 154.
- Guideline amounts are presumptive, not automatic — courts may deviate when the facts justify it.
- Support generally continues until 18 or high-school graduation, whichever is later; longer support may apply for a disabled child.
- Either parent can seek modification when material and substantial change, or a three-year lapse with a 20% or $100 difference from guidelines, under fam. code ch. 156..
- Read the companion guide: Texas alimony / spousal maintenance.
Statutory framework and guideline model
Texas's child support system is built around Tex. Fam. Code ch. 154. Under the percentage of net resources (obligor), Texas applies guideline percentages to the obligor’s monthly net resources (20% for one child, 25% for two, 30% for three, 35% for four, 40% for five, plus at least 5% more for six or more), up to a statutory net-resources cap that the Tit. IV-D agency periodically adjusts. Different percentages apply when the obligor has children in more than one household.
Federal law requires every state to maintain presumptive guidelines and to review them at least every four years (42 U.S.C. § 667). Confirm the latest Texas schedule or worksheet before relying on any online calculator.
How child support is calculated in Texas
- Identify each parent's guideline income using net resources as defined in Tex. Fam. Code ch. 154 and the accompanying worksheets or administrative rules.
- Apply the percentage of net resources (obligor) — whether that means a combined-income schedule, an obligor percentage table, or a Melson-style self-support reserve plus primary obligation.
- Allocate add-ons such as health insurance premiums, unreimbursed medical expenses, and work-related child care according to Texas practice.
- Consider parenting time adjustments where the guidelines or case law authorize a credit or shared-custody formula.
- Test for deviation if a strict guideline result would be unjust or inappropriate on the record.
Online calculators can illustrate ranges, but only the controlling statute, guidelines, and court findings produce an enforceable order.
Frequently asked questions
How is child support calculated in Texas?
Texas uses the percentage of net resources (obligor) under Tex. Fam. Code ch. 154. Courts start with net resources, apply the guideline schedule or percentage, allocate add-ons, and may deviate with findings when the presumptive amount is unjust.
What income counts for Texas child support?
Guideline income generally tracks net resources as defined by Tex. Fam. Code ch. 154 and the worksheets. Wages, self-employment income, bonuses, and certain benefits are commonly included; exact deductions and exclusions are statute-specific.
Can Texas courts order more or less than the guideline amount?
Yes. Guideline support is presumptive. Judges may deviate when the record shows the guideline result is unjust or inappropriate, typically with written findings explaining the departure.
How do I modify a Texas child support order?
Material and substantial change, or a three-year lapse with a 20% or $100 difference from guidelines, under Fam. Code ch. 156. File in the court with continuing jurisdiction (or follow UIFSA for interstate cases) and support the request with current financial evidence.
When does child support end in Texas?
Support generally continues until 18 or high-school graduation, whichever is later; longer support may apply for a disabled child. Confirm any disability, educational, or agreed extensions in your particular order.
Where can I research Texas child support case law?
Use LawDiver search scoped to Texas, or open the opinions linked in this guide. Companion reading: Texas spousal maintenance guide.
Disclaimer
This guide is general legal information about Texas child support, not legal advice. Statutes, guidelines, and case law change. Confirm the current text of Tex. Fam. Code ch. 154 and consult a licensed Texas family-law attorney about your facts.