How to Modify Child Support in Louisiana
Reviewed by DocDraft Legal Team · Louisiana · Last updated September 21, 2026
In Louisiana, a child support modification is a court judgment that raises or lowers an existing child support order after circumstances change. Louisiana will not change an order unless you show a material change in circumstances that is substantial and continuing since the last award (La. R.S. 9:311), and a distinctive Louisiana rule sets when the change takes effect: a judgment modifying a final support order is retroactive to the date of judicial demand, the date you file your rule to modify, except for good cause shown (La. R.S. 9:315.21). Support is set by the state child support guidelines applied to each parent's income (La. R.S. 9:315.1), so a real income change, a job loss, or a new custody schedule can make the current amount too high or too low. You can file a Rule to Modify Child Support with the district court that issued your order, or, if the Department of Children and Family Services (DCFS) is handling your case, you can ask DCFS to review it. In DCFS cases there is a rebuttable presumption of a material change when the guidelines would move the award by at least 25 percent, and DCFS cases can be reviewed about every three years without proving a change. Because a change reaches back only to when you file, keep paying your current order until a judge signs a new one. Attorney review of your filing is available through DocDraft.
Find out where you stand in Louisiana
Where are you with changing your child support order?
DocDraft provides document preparation, not legal advice.
How do I modify child support in Louisiana?
File a Rule to Modify Child Support with the district court that issued your order, or ask the Department of Children and Family Services to review it if DCFS handles your case. You must show a material change in circumstances that is substantial and continuing since the last order (La. R.S. 9:311).
How much does income have to change to modify child support in Louisiana?
Louisiana requires a material change in circumstances that is substantial and continuing (La. R.S. 9:311). In cases handled by the Department of Children and Family Services, there is a rebuttable presumption of a material change when the guidelines would change the award by at least 25 percent.
How far back can a child support change go in Louisiana?
A modification of a final child support order is retroactive to the date of judicial demand, the date you file your rule to modify, except for good cause shown, and in no case earlier than that date (La. R.S. 9:315.21). Support that already came due generally cannot be reduced.
Which court handles child support modifications in Louisiana?
The district court that issued your existing order handles modifications, and some parishes route them through a specialized family or domestic relations court. If the Department of Children and Family Services manages your case, you can also ask that agency to review and seek to adjust the order. Both use the state guidelines.
Louisiana child support modification at a glance
In Louisiana, a child support modification is a court judgment that raises or lowers an existing support order after circumstances change, and Louisiana will not change an order unless you show a material change in circumstances that is substantial and continuing since the last award (La. R.S. 9:311). Support follows the state child support guidelines applied to each parent's income (La. R.S. 9:315.1), so an income change, a job loss, or a new custody schedule can justify a new amount. You file a Rule to Modify Child Support with the district court that issued your order, or ask the Department of Children and Family Services (DCFS) to review your case. In DCFS cases, a 25 percent guideline change is presumed material, and a change applies back only to the date you file (La. R.S. 9:315.21).
Lowering a Louisiana order after a pay cut
Suppose a Louisiana district court set your child support two years ago and your hours were just cut, a material change in circumstances that is substantial and continuing (La. R.S. 9:311). You gather pay stubs showing the drop, prepare a Rule to Modify Child Support, and file it with the district court that issued your order. Because a modification is retroactive only to the date of judicial demand, you file right away rather than waiting, and you keep paying the current amount until a judge rules (La. R.S. 9:315.21). At the hearing the court recalculates support under the guidelines (La. R.S. 9:315.1) and signs a lower order effective back to your filing date. Attorney review of your filing is available through DocDraft.
Relevant Laws
La. R.S. 9:311 (modification; material change in circumstances)
Provides that a support award shall not be modified unless the party seeking the change shows a material change in circumstances that is substantial and continuing since the last award, and sets a rebuttable presumption of a material change, in DCFS cases, when the guidelines would produce at least a 25 percent change, plus periodic review about every three years.
La. R.S. 9:315.21 (retroactivity of child support judgment)
Provides that, except for good cause shown, a judgment modifying or revoking a final child support judgment shall be retroactive to the date of judicial demand, but in no case prior to the date of judicial demand, so a modification cannot reach support that came due earlier.
La. R.S. 9:315.1 (child support guidelines; rebuttable presumption)
Establishes that the amount produced by the Louisiana child support guidelines is a rebuttable presumption of the proper amount, applied to each parent's income, and sets the standard for a court to deviate from the guideline figure.
Louisiana DCFS Child Support Enforcement
The Louisiana Department of Children and Family Services Child Support Enforcement division explains how to apply for services and how it reviews and seeks to modify orders for cases it handles, including guideline-based review and periodic review.
Regional Variances
Louisiana child support modification rules at a glance
Qualifying threshold
A material change in circumstances that is substantial and continuing since the last award (La. R.S. 9:311). In DCFS cases, a rebuttable presumption of a material change arises when the guidelines would change the award by at least 25 percent.
Where to file
The district court that issued your existing order, with some parishes using a specialized family or domestic relations court. If the Department of Children and Family Services handles your case, you can ask it to review and seek to adjust the order.
Modification form
Louisiana has no single statewide numbered court form. You file a Rule to Modify Child Support in the district court. DCFS prepares and distributes modification forms and information, which clerks of court make available on request (La. R.S. 9:311).
Retroactivity
A modification of a final order is retroactive to the date of judicial demand, the date you file, except for good cause shown, and in no case earlier (La. R.S. 9:315.21). Support that already came due generally cannot be reduced.
Periodic review
If the Department of Children and Family Services handles your case, it can review the order about every three years without proof of a material change, consistent with federal rules (La. R.S. 9:311).
Suggested Compliance Checklist
Gather proof of your changed circumstances
Before you file days after startingCollect current pay stubs, tax returns, and proof of the change (job loss, income change, or a new custody schedule), and estimate the new guideline amount (La. R.S. 9:315.1). Attorney review of your filing is available through DocDraft.
Confirm you have a material change
Before you file days after startingCheck that your change is substantial and continuing since the last order (La. R.S. 9:311). In DCFS cases, a 25 percent guideline change is presumed material, but a court can still modify on other proof of a material change.
Prepare the Rule to Modify Child Support
As soon as your circumstances change days after startingPrepare a Rule to Modify Child Support (a rule to show cause) for the district court. Louisiana has no single statewide numbered court form; DCFS distributes modification forms and information that clerks of court make available on request (La. R.S. 9:311).
File with the district court
Promptly (the change dates back to filing) days after startingFile your rule with the clerk of the district court that issued your order and pay the fee, or ask to proceed in forma pauperis. Because a change applies back only to the date of judicial demand, file promptly (La. R.S. 9:315.21).
Serve the other parent
Before the hearing days after startingHave the other parent served with your filed rule as the court directs, then confirm service is in the record. Proper service is required for the court to change the order at the hearing.
Attend the hearing and get the new order
On your hearing date days after startingGo to the hearing with your income proof, let the court recalculate support under the guidelines, and get the signed order retroactive to your filing date. Keep paying the current order until then (La. R.S. 9:315.21).
| Task | Description | Document | Days after starting |
|---|---|---|---|
| Gather proof of your changed circumstances | Collect current pay stubs, tax returns, and proof of the change (job loss, income change, or a new custody schedule), and estimate the new guideline amount (La. R.S. 9:315.1). Attorney review of your filing is available through DocDraft. | - | Before you file |
| Confirm you have a material change | Check that your change is substantial and continuing since the last order (La. R.S. 9:311). In DCFS cases, a 25 percent guideline change is presumed material, but a court can still modify on other proof of a material change. | - | Before you file |
| Prepare the Rule to Modify Child Support | Prepare a Rule to Modify Child Support (a rule to show cause) for the district court. Louisiana has no single statewide numbered court form; DCFS distributes modification forms and information that clerks of court make available on request (La. R.S. 9:311). | - | As soon as your circumstances change |
| File with the district court | File your rule with the clerk of the district court that issued your order and pay the fee, or ask to proceed in forma pauperis. Because a change applies back only to the date of judicial demand, file promptly (La. R.S. 9:315.21). | - | Promptly (the change dates back to filing) |
| Serve the other parent | Have the other parent served with your filed rule as the court directs, then confirm service is in the record. Proper service is required for the court to change the order at the hearing. | - | Before the hearing |
| Attend the hearing and get the new order | Go to the hearing with your income proof, let the court recalculate support under the guidelines, and get the signed order retroactive to your filing date. Keep paying the current order until then (La. R.S. 9:315.21). | - | On your hearing date |
Frequently Asked Questions
A real, involuntary income drop can be a material change in circumstances that is substantial and continuing, which Louisiana requires to modify an order (La. R.S. 9:311). You must still file a rule to modify; support keeps accruing at the old rate until the court acts. Do not simply stop paying.
No. Either parent can file a Rule to Modify Child Support on their own, and the other parent is served and can respond. If both parents agree on a new amount, they can present a consent judgment for a judge to sign. The court still measures it against the state guidelines (La. R.S. 9:315.1).
After you file your rule, the district court sets a hearing, often several weeks to a few months out depending on the parish. An uncontested change or a Department of Children and Family Services review can be faster. Because a change dates back only to your filing date, filing promptly protects you (La. R.S. 9:315.21).
Yes. If the Department of Children and Family Services is providing support enforcement services, you can ask it to review your order. DCFS applies the guidelines, and there is a rebuttable presumption of a material change when they would move the award by at least 25 percent (La. R.S. 9:311).
You can seek a modification whenever a material change in circumstances that is substantial and continuing occurs (La. R.S. 9:311). If the Department of Children and Family Services handles your case, it can review the order about every three years without proof of a change, consistent with federal rules.
A modification changes support only from the date of judicial demand forward, except for good cause shown (La. R.S. 9:315.21). Support that already came due, called arrears, generally cannot be reduced or erased by a modification. Keep paying your current order to avoid building arrears while your rule is pending.
It can. A substantial and continuing change in either parent's income may be a material change in circumstances that supports a modification up or down (La. R.S. 9:311). In DCFS cases, a change that would move the guideline award by at least 25 percent is presumed material.
Louisiana has no single statewide numbered court form, so you file a Rule to Modify Child Support in the district court that issued your order. The Department of Children and Family Services prepares and distributes modification forms and information, and clerks of court make them available to the public on request (La. R.S. 9:311).
Other Louisiana guides
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