Texas's rule on modifying child support turns on a feature the national template does not capture: Either: (1) the circumstances of the child or a person affected have materially and substantially changed since the order (or the signed mediated settlement it rests on), or (2) three years have passed since the order and the monthly amount differs by 20% or $100 from the current guideline amount. Agreed below/above-guideline orders require changed circumstances. Incarceration of 180+ days is a statutory material change. The controlling authority is Tex. Fam. Code § 156.401. File a petition to modify filed in the court with continuing jurisdiction, or an OAG administrative review. Modification may be retroactive to the earlier of the date of service or the date the respondent appeared; accrued support generally survives. OAG IV-D cases may be reviewed and modified administratively (review and adjustment, or modified withholding order).
Key takeaways
- Texas modification actions are filed in the district court with continuing jurisdiction, or the Office of the Attorney General (OAG) for Title IV-D cases.
- The legal standard: Either: (1) the circumstances of the child or a person affected have materially and substantially changed since the order (or the signed mediated settlement it rests on), or (2) three years have passed since the order and the monthly amount differs by 20% or $100 from the current guideline amount.
- Modification may be retroactive to the earlier of the date of service or the date the respondent appeared; accrued support generally survives.
- OAG IV-D cases may be reviewed and modified administratively (review and adjustment, or modified withholding order).
- A modification is never automatic — even when a percentage threshold is met, the court must enter a new order.
- Companion reading: Texas child support guidelines and how to modify spousal maintenance in Texas.
Worked example under Texas law
The illustration below uses only rules already stated for Texas. It is a research hypothetical, not a prediction of what a court will do.
A parent in Texas lost income after the last child-support order and wants the number changed.
- File in the district court with continuing jurisdiction, or the Office of the Attorney General (OAG) for Title IV-D cases using a petition to modify filed in the court with continuing jurisdiction, or an OAG administrative review.
- Prove the Texas standard: Either: (1) the circumstances of the child or a person affected have materially and substantially changed since the order (or the signed mediated settlement it rests on), or (2) three years have passed since the order and the monthly amount differs by 20% or $100 from the current guideline amount. Agreed below/above-guideline orders require changed circumstances. Incarceration of 180+ days is a statutory material change.
- Expect the effective date to follow this rule: Modification may be retroactive to the earlier of the date of service or the date the respondent appeared; accrued support generally survives.
- If the case is IV-D, also consider administrative review: OAG IV-D cases may be reviewed and modified administratively (review and adjustment, or modified withholding order).
A Texas modification is a new order under Tex. Fam. Code § 156.401. It is not automatic, and arrears already due generally stay due.
The legal standard in Texas
Either: (1) the circumstances of the child or a person affected have materially and substantially changed since the order (or the signed mediated settlement it rests on), or (2) three years have passed since the order and the monthly amount differs by 20% or $100 from the current guideline amount. Agreed below/above-guideline orders require changed circumstances. Incarceration of 180+ days is a statutory material change.
In practice, the moving parent carries the burden. The court compares the facts as they stood when the last order was entered against the facts today, and asks whether the difference is significant enough — and durable enough — to justify a new order. Judges distinguish between temporary setbacks (a few weeks of reduced hours) and genuine, continuing changes (a layoff, a new custody schedule, a child's changed medical needs).
What counts as a change in Texas
Facts that most often support modification:
- Income changes. Job loss, demotion, retirement, disability, or a significant raise on either side. Voluntary quits and deliberate underemployment usually backfire — courts may impute income.
- Parenting-time shifts. A new custody order, a child moving households, or substantial unexercised visitation.
- The child's needs. New medical or educational expenses, health-insurance changes, or a child reaching an age that changes the guideline bracket.
- Guideline updates. In many states, a recalculated guideline amount that differs from the current order by the statutory margin is itself the change — Tex. Fam. Code § 156.401 controls how that math works here.
- Incarceration, military deployment, or other statutory events that Texas treats as qualifying changes.
Facts that rarely work: a short gap between jobs, a new partner's income (usually not imputed to a parent), lifestyle choices, or the passage of time alone where Texas still requires a showing.
Step-by-step: how to file
A petition to modify filed in the court with continuing jurisdiction, or an OAG administrative review. The typical sequence:
- Confirm jurisdiction. Texas courts modify their own orders; if the child and parties have moved, the Uniform Interstate Family Support Act (UIFSA) determines which state may act. Generally the issuing state keeps exclusive continuing jurisdiction until all parties and the child have left, or the parties agree in writing to transfer.
- Gather financial proof. Two to three years of tax returns, recent pay stubs, proof of benefits or disability, health-insurance costs, and child-care invoices. Expect a financial affidavit or worksheet under Tex. Fam. Code § 156.401.
- File the modification request. A petition to modify filed in the court with continuing jurisdiction, or an OAG administrative review.
- Serve the other parent. Service starts the retroactivity clock in most states — delays cost you.
- Exchange discovery. Interrogatories, document requests, and sometimes a vocational evaluation if underemployment is disputed.
- Negotiate or litigate. Many modification cases settle at mediation or a case-management conference; a stipulated modification must still be approved and entered by the court.
- Get the new order entered. Support does not change until a judge signs — keep paying the existing order until then.
When the change takes effect (retroactivity)
Modification may be retroactive to the earlier of the date of service or the date the respondent appeared; accrued support generally survives.
This is the single most expensive mistake in modification practice. If circumstances changed in January but the motion is filed in June, the months in between are almost always governed by the old order. Filing promptly — even before you have perfect evidence — protects the effective date.
Periodic reviews and administrative modification
OAG IV-D cases may be reviewed and modified administratively (review and adjustment, or modified withholding order).
Administrative review is often faster and cheaper than litigation, but its scope is narrower: agencies adjust amounts under the guidelines, while only the district court with continuing jurisdiction, or the Office of the Attorney General (OAG) for Title IV-D cases can resolve disputed facts about custody, income imputation, or deviations.
Interstate cases (UIFSA)
When parents live in different states, a Texas order can usually be registered and enforced anywhere, but modification follows UIFSA's jurisdictional rules. Register the order in the responding state, then seek modification where the law permits it. Do not simply stop paying while a jurisdictional fight is pending — arrears keep accruing under the existing order.
Case law: how Texas courts decide modification motions
The opinions below are in the LawDiver corpus, with block quotes pulled from the opinion text so you can jump straight into the full decisions.
In the Matter of the MARRIAGE OF Richard Dean GROSSNICKLE and Lee Ann Grossnickle and in the Interest of Emily Ann
…SS. Richard Dean Grossnickle appeals, pro se, from an order modifying the support for the child of his marriage to Lee Ann Grossnickle. 1 In that order, the trial court increased child support to the amount of $2,000.00 per month. The court also ordered both parties to divide evenly the expenses of the child’s enrollment in a private high school. The court also ordered that, if…
In the Matter of the MARRIAGE OF Richard Dean GROSSNICKLE and Lee Ann Grossnickle and in the Interest of Emily Ann is worth reading on Texas child support modification because the court put the point in its own words: "SS. Richard Dean Grossnickle appeals, pro se, from an order modifying the support for the child of his marriage to Lee Ann Grossnickle. 1 In that order, the trial court increased child support to the amount of $2,000.00 per month." Use that passage as the starting point, then read the facts that precede it.
In the Matter of the MARRIAGE OF Louis LENDMAN and Amalia Lendman, and in the Interest of Elizabeth Diane Lendman
…intenance order. On August 9, 2004, Louis filed a motion to modify the maintenance order and a separate motion to modify child support. In each of these motions, Louis alleged that the orders in the judgment of August 3, 2000, were contrary to law and that the court had exceeded its statutory authorization in entering the orders. He also alleged that the circumstances had mater…
Texas opinions such as In the Matter of the MARRIAGE OF Louis LENDMAN and Amalia Lendman, and in the Interest of Elizabeth Diane Lendman are cited where child support modification is disputed. The court stated: "On August 9, 2004, Louis filed a motion to modify the maintenance order and a separate motion to modify child support." That is the language to brief; the rest of the decision supplies the procedural posture.
In the Matter of the MARRIAGE OF Mary Lynn HAMER and Dennis Roy Hamer and in the Interest of Wesley Edward Hamer
…Justice. Dennis Roy Hamer (D. Hamer) appeals fiom an order modifying his monthly child support obligations. He asks, in three points of error, whether the evidence was legally and factually insufficient to support modifica 265 tion and whether the court improperly considered his spouse’s income in arriving at its decision. We answer no and affirm. LAW A court may modify a par…
On child support modification, In the Matter of the MARRIAGE OF Mary Lynn HAMER and Dennis Roy Hamer and in the Interest of Wesley Edward Hamer speaks to the Texas dispute in this passage: "Justice. Dennis Roy Hamer (D. Hamer) appeals fi*om an order modifying his monthly child support obligations." The surrounding opinion shows how the court applied that language to the record.
In the Matter of the MARRIAGE OF William Robert WARD, Jr., and Terri Lyne Ward and in the Interest of Brittanie Lyne
…ral listed events, the pertinent one being a “further order modifying this child support.” On March 27, 1996, a “further order,” entitled “Order Modifying Child Support” (the 1996 order) modified the amount of the monthly payment to $2,623.00 until: any child reaches the age of 18 years, provided that, if the child is fully enrolled in an accredited secondary school in a progra…
On child support modification, In the Matter of the MARRIAGE OF William Robert WARD, Jr., and Terri Lyne Ward and in the Interest of Brittanie Lyne speaks to the Texas dispute in this passage: "On March 27, 1996, a “further order,” entitled “Order Modifying Child Support” (the 1996 order) modified the amount of the monthly payment to $2,623." The surrounding opinion shows how the court applied that language to the record.
In the Matter of the MARRIAGE OF Janet K. VOGEL and Timothy P. Vogel. in the Interest of Joshua L. VOGEL, a Minor Child
…othy P. Vogel (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…
Practitioners open In the Matter of the MARRIAGE OF Janet K. VOGEL and Timothy P. Vogel. in the Interest of Joshua L. VOGEL, a Minor Child when Texas child support modification turns on the distinction in this sentence: "P. Vogel (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)." Do not lift it out of the facts the court was deciding.
In the Matter of the MARRIAGE OF Nancy Morrow EDWARDS and James R. Edwards and in the Interest of Robert Karl
…ustice. By four points of error, 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 i…
On child support modification, 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: "By four points of error, James R. Edwards attacks a modification order increasing child support." The surrounding opinion shows how the court applied that language to the record.
Practical checklist before you file
- Re-read the existing order: does it recite a modification standard, a reservation of jurisdiction, or agreed deviation findings? Those terms shape your burden.
- Run the current Texas guideline calculation on today's incomes before filing; know the percentage gap.
- Assemble documents that date the change (termination letter, disability award, new lease, custody order).
- Calendar the three-year review cycle if Texas offers one for your case type.
- Keep paying the current order until a new one is entered — arrears are nearly impossible to erase later.
- Search LawDiver for recent Texas modification decisions before briefing or mediating.
Frequently asked questions
Can child support be modified in Texas?
Yes. Either: (1) the circumstances of the child or a person affected have materially and substantially changed since the order (or the signed mediated settlement it rests on), or (2) three years have passed since the order and the monthly amount differs by 20% or $100 from the current guideline amount. Agreed below/above-guideline orders require changed circumstances. Incarceration of 180+ days is a statutory material change. Modifications are handled through a petition to modify filed in the court with continuing jurisdiction, or an OAG administrative review.
How much does income have to change to modify child support in Texas?
Either: (1) the circumstances of the child or a person affected have materially and substantially changed since the order (or the signed mediated settlement it rests on), or (2) three years have passed since the order and the monthly amount differs by 20% or $100 from the current guideline amount. Agreed below/above-guideline orders require changed circumstances. Incarceration of 180+ days is a statutory material change. Some changes — custody shifts, medical needs, or statutory events — qualify even without hitting a numeric threshold.
Can Texas child support be modified retroactively?
Modification may be retroactive to the earlier of the date of service or the date the respondent appeared; accrued support generally survives. Plan on the current order controlling until a new one is entered.
Who can request a modification?
Either parent, and in IV-D cases the state child support agency on a parent's behalf. OAG IV-D cases may be reviewed and modified administratively (review and adjustment, or modified withholding order).
Do I need a lawyer to modify child support in Texas?
Not always — the district court with continuing jurisdiction, or the Office of the Attorney General (OAG) for Title IV-D cases accepts filings from self-represented parents, and administrative reviews are designed for that. Contested income imputation, self-employment income, or interstate jurisdiction issues are where counsel matters most.
Does the other parent's refusal to follow the visitation order change support?
Not automatically. Custody interference and support are legally distinct issues in Texas; withholding support in response to withheld visitation typically creates arrears and contempt exposure. Seek modification or enforcement of the parenting order through the court instead.
Related guides
- How Texas calculates child support
- Texas spousal maintenance / alimony guide
- How to modify spousal maintenance in Texas
- How to modify child support in Texas
Disclaimer
This guide is general legal information about modifying child support in Texas, not legal advice. Statutes, guidelines, and case law change. Confirm the current text of Tex. Fam. Code § 156.401 and consult a licensed Texas family-law attorney about your specific order.