How to Modify Child Support in Indiana
Reviewed by DocDraft Legal Team · Indiana · Last updated September 21, 2026
In Indiana, a child support modification is a court order that changes the amount of an existing child support order after circumstances change, and Indiana gives you a distinctive numeric shortcut: you can qualify if your order is at least 12 months old and the amount now differs by more than 20 percent from what the Indiana Child Support Guidelines would produce (IC 31-16-8-1). You can also qualify the traditional way, by showing a change in circumstances so substantial and continuing that the current terms are unreasonable (IC 31-16-8-1). Child support in Indiana follows the statewide guidelines, tied to each parent's weekly income and parenting time, so a job loss, an income swing, or a new parenting schedule can push the current amount out of line. You can ask for a change in two ways. You can file a verified petition to modify with the circuit or superior court that issued your order, or, if the Title IV-D program handles your case, you can ask the local county prosecutor's child support office and the Indiana DCS Child Support Bureau to review it. A modification takes effect no earlier than the date you file your petition, not when your circumstances changed, so support that already came due cannot be wiped out (IC 31-16-16-6). Keep paying your current order until the court changes it. Attorney review of your filing is available through DocDraft.
Find out where you stand in Indiana
Where are you with changing your child support order?
DocDraft provides document preparation, not legal advice.
How do I modify child support in Indiana?
File a verified petition to modify with the circuit or superior court that issued your order, or ask your county Title IV-D prosecutor and Indiana DCS to review it. You must show a substantial, continuing change, or that the order is at least 12 months old and off by more than 20 percent (IC 31-16-8-1).
How much does the amount have to change to modify child support in Indiana?
Indiana lets you qualify without proving a broader change if your order is at least 12 months old and now differs by more than 20 percent from the Indiana Child Support Guidelines (IC 31-16-8-1). Otherwise, you show a change so substantial and continuing that the current terms are unreasonable.
How far back can a child support change go in Indiana?
A modification takes effect no earlier than the date you file your petition to modify, not when your circumstances changed (IC 31-16-16-6). Support that already came due cannot be reduced, so filing promptly protects you. Keep paying your current order until the court signs a new one.
Which court handles child support modifications in Indiana?
The Indiana circuit or superior court that issued your existing order handles the modification and keeps jurisdiction over it. If the Title IV-D program manages your case, the county prosecutor's child support office and Indiana DCS can review the order and file a modification petition with that court for you.
Indiana child support modification at a glance
In Indiana, a child support modification is a court changing an existing support order after circumstances change, and the state offers a clear numeric path: if your order is at least 12 months old and the amount now differs by more than 20 percent from the Indiana Child Support Guidelines, you can qualify without proving a broader change (IC 31-16-8-1). You can also qualify by showing a change so substantial and continuing that the terms are unreasonable. File a verified petition to modify with the circuit or superior court that issued your order, or ask your county Title IV-D prosecutor and the Indiana DCS Child Support Bureau to review it. A change takes effect no earlier than the date you file, so support that already came due cannot be reduced (IC 31-16-16-6).
Lowering an Indiana order after a pay cut
Suppose your Indiana order is 18 months old and your hours were cut, so the guideline amount now differs by more than 20 percent, which is exactly the numeric test Indiana allows (IC 31-16-8-1). You run the Indiana child support calculator, prepare a verified petition to modify showing your lower weekly income, and file it with the circuit or superior court that issued the order. Because a change takes effect no earlier than your filing date (IC 31-16-16-6), you file right away and keep paying the current amount until the court rules. At the hearing the court recalculates support under the Indiana guidelines and signs a lower order effective from your filing date. Attorney review of your filing is available through DocDraft.
Relevant Laws
IC 31-16-8-1 (modification of a child support order)
Provides that a child support order may be modified upon a showing of changed circumstances so substantial and continuing as to make the terms unreasonable, or upon a showing that the ordered amount differs by more than 20 percent from the amount the Indiana guidelines would order and the order is at least 12 months old.
IC 31-16-16-6 (retroactive modification of support)
Provides that, with limited exceptions, a court may not retroactively modify an obligor's duty to pay a delinquent support payment, so a modification reaches only support that becomes due after notice of the petition to modify, not support that already accrued.
Indiana courts self-service: child support guidelines and calculator
The Indiana Judicial Branch self-service center explains the Indiana Child Support Guidelines, links the state child support calculator to estimate the guideline amount, and points to self-service forms for a petition to modify child support.
Indiana DCS review and adjustment of child support orders
The Indiana Department of Child Services explains the Title IV-D review process, stating that an order may be reviewed when at least one year has passed and the amount differs by at least 20 percent, and that IV-D orders are reviewed at least once every three years.
Regional Variances
Indiana child support modification rules at a glance
Qualifying threshold
Indiana allows modification on a substantial, continuing change that makes the terms unreasonable, or when the order is at least 12 months old and differs by more than 20 percent from the Indiana Child Support Guidelines (IC 31-16-8-1).
Where to file
The circuit or superior court that issued your original order, which keeps jurisdiction. If the Title IV-D program handles your case, the county prosecutor's child support office and Indiana DCS can review and file for you.
Modification form
A verified petition to modify child support, not a single numbered statewide form. Self-service forms and instructions are available through the Indiana courts self-service resources and Indiana Legal Help at no charge.
Retroactivity
A modification takes effect no earlier than the date you file your petition, not when circumstances changed (IC 31-16-16-6). Support that already came due cannot be reduced.
Periodic review
If the Title IV-D program handles your case, the order is reviewed at least once every three years, and sooner when a substantial change or the 20 percent, 12 month gap occurs.
Suggested Compliance Checklist
Confirm you qualify and gather proof
Before you file days after startingCollect current pay stubs, tax returns, and proof of the change, and check whether your order is at least 12 months old and off by more than 20 percent, or whether a substantial change applies (IC 31-16-8-1). Attorney review of your filing is available through DocDraft.
Prepare the verified petition to modify
As soon as your circumstances change days after startingDraft a verified petition asking the court to modify child support, describing the changed circumstances or the 20 percent, 12 month gap. Use the free Indiana courts self-service forms and instructions and Indiana Legal Help.
File with the issuing court
Promptly (the change dates back to filing) days after startingFile your petition with the clerk of the circuit or superior court that issued the original order, and pay the fee or request a waiver. Because a change dates back only to filing, file promptly (IC 31-16-16-6).
Serve the other parent
After filing, before the hearing days after startingServe the other parent with your filed papers and file proof of service. Proper notice is required before the court can change the order, and it fixes the date from which a modification can take effect (IC 31-16-16-6).
Consider a Title IV-D review
Anytime your case is with the agency days after startingIf the county prosecutor's child support office and Indiana DCS handle your case, ask them to review your order. The office generally acts when the order is at least a year old and differs by at least 20 percent.
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 Indiana guidelines, and get the signed order effective from your filing date. Keep paying the current order until then.
| Task | Description | Document | Days after starting |
|---|---|---|---|
| Confirm you qualify and gather proof | Collect current pay stubs, tax returns, and proof of the change, and check whether your order is at least 12 months old and off by more than 20 percent, or whether a substantial change applies (IC 31-16-8-1). Attorney review of your filing is available through DocDraft. | - | Before you file |
| Prepare the verified petition to modify | Draft a verified petition asking the court to modify child support, describing the changed circumstances or the 20 percent, 12 month gap. Use the free Indiana courts self-service forms and instructions and Indiana Legal Help. | - | As soon as your circumstances change |
| File with the issuing court | File your petition with the clerk of the circuit or superior court that issued the original order, and pay the fee or request a waiver. Because a change dates back only to filing, file promptly (IC 31-16-16-6). | - | Promptly (the change dates back to filing) |
| Serve the other parent | Serve the other parent with your filed papers and file proof of service. Proper notice is required before the court can change the order, and it fixes the date from which a modification can take effect (IC 31-16-16-6). | - | After filing, before the hearing |
| Consider a Title IV-D review | If the county prosecutor's child support office and Indiana DCS handle your case, ask them to review your order. The office generally acts when the order is at least a year old and differs by at least 20 percent. | - | Anytime your case is with the agency |
| Attend the hearing and get the new order | Go to the hearing with your income proof, let the court recalculate support under the Indiana guidelines, and get the signed order effective from your filing date. Keep paying the current order until then. | - | On your hearing date |
Frequently Asked Questions
A real, involuntary income drop can support a modification, but you must file a verified petition to modify; support keeps accruing at the old amount until the court acts (IC 31-16-16-6). A court may weigh whether you are earning what you reasonably could. Do not simply stop paying.
No. Either parent can file a petition to modify on their own, and the other parent is served and can respond. If both parents agree on a new amount, they can submit it for the court to approve, and the court still checks it against the Indiana Child Support Guidelines.
After you file your petition, the court sets a hearing, often several weeks to a few months out depending on the county. An agreed change or a Title IV-D agency review can move faster. Because the change dates back only to your filing date, filing promptly protects you (IC 31-16-16-6).
Yes. If the Title IV-D program handles your case, the county prosecutor's child support office and the Indiana DCS Child Support Bureau can review your order and file a modification petition with the court. The office generally acts when the order is at least a year old and off by more than 20 percent.
You can file whenever a substantial, continuing change occurs. If the Title IV-D program handles your case, you can generally ask for a review about every three years even without a change, under federal rules. There is no limit on filing when circumstances genuinely change.
A modification changes support only from your filing date forward (IC 31-16-16-6). Support that already came due, called an arrearage, cannot be reduced or erased by a modification. Keep paying your current order to avoid building an arrearage while your petition is pending.
Filing a petition to modify in the circuit or superior court carries the standard filing fee, but you can ask the court to waive it if you cannot afford it. A review through the county Title IV-D child support office does not charge you a fee for the review itself.
Indiana uses a verified petition to modify child support rather than a single numbered statewide form. You can get the current self-service forms and instructions through the Indiana courts self-service resources and Indiana Legal Help, then file with the court that issued your order.
Other Indiana guides
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