How to Modify Child Support in North Carolina
Reviewed by DocDraft Legal Team · North Carolina · Last updated September 21, 2026
In North Carolina, a child support modification is a District Court order that changes the amount of an existing child support order after a substantial change in circumstances, and the state gives that phrase a concrete meaning: if your order is at least three years old and a fresh calculation under the North Carolina Child Support Guidelines would differ from your current amount by 15 percent or more, that gap is presumed to be a substantial change (North Carolina Child Support Guidelines, effective January 1, 2023). Even before three years pass, you can still ask for a change by proving a substantial change in circumstances, such as an involuntary income drop or a new custody schedule (N.C.G.S. 50-13.7). Support is set by a statewide guideline tied to each parent's income and overnights (N.C.G.S. 50-13.4), so an income or custody change can make the current amount too high or too low. You can ask for a change in two ways. You can file a Motion and Notice of Hearing for Modification of Child Support Order (Form AOC-CV-600) in the District Court that entered your order, or, if NC Child Support Services handles your case, ask that agency to review it. A change applies going forward, and each past-due payment is vested when it accrues and cannot be reduced (N.C.G.S. 50-13.10), so 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 North Carolina
Where are you with changing your child support order?
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How do I modify child support in North Carolina?
File a Motion and Notice of Hearing for Modification of Child Support Order (Form AOC-CV-600) in the District Court that entered your order, or ask NC Child Support Services to review your case. You must show a substantial change in circumstances since the last order (N.C.G.S. 50-13.7).
How much does the guideline amount have to change to modify child support in North Carolina?
If your order is at least three years old, a difference of 15 percent or more between the current amount and a fresh guideline calculation is presumed a substantial change (North Carolina Child Support Guidelines). If less than three years have passed, you must prove a substantial change another way (N.C.G.S. 50-13.7).
How far back can a child support change go in North Carolina?
A modification applies going forward, not to when your circumstances changed. Each past-due payment is vested when it accrues and cannot be vacated, reduced, or modified for any reason (N.C.G.S. 50-13.10). Filing promptly protects you, and you should keep paying the current order until a judge changes it.
Which court handles child support modifications in North Carolina?
The District Court that entered your existing order handles modifications, using the statewide North Carolina Child Support Guidelines. If NC Child Support Services, an IV-D program under NC DHHS, manages your case, you can also ask that agency to review the order and take it to court if a change is warranted.
North Carolina child support modification at a glance
In North Carolina, a child support modification is a District Court order that changes an existing support order after a substantial change in circumstances (N.C.G.S. 50-13.7). The state gives that standard a quantified shortcut: if your order is at least three years old and a fresh calculation under the North Carolina Child Support Guidelines would differ from the current amount by 15 percent or more, that difference is presumed to be a substantial change (Guidelines effective January 1, 2023). Support follows a statewide guideline tied to each parent's income and overnights (N.C.G.S. 50-13.4). You file Form AOC-CV-600 in the District Court that entered your order, or ask NC Child Support Services to review your case. A change applies going forward, and each past-due payment is vested when it accrues and cannot be reduced (N.C.G.S. 50-13.10).
Lowering a North Carolina order that is four years old
Suppose your North Carolina order is four years old and your hours were just cut, so a fresh guideline calculation comes out 15 percent below your current amount. Because your order is at least three years old and the gap is 15 percent or more, that difference is presumed a substantial change of circumstances (North Carolina Child Support Guidelines). You complete Form AOC-CV-600, file it in the District Court that entered your order, and serve the other parent. Because a change applies going forward and past-due support is vested (N.C.G.S. 50-13.10), you file right away and keep paying the current amount until the judge rules. At the hearing the judge recalculates support under the guidelines and signs a lower order. Attorney review of your filing is available through DocDraft.
Relevant Laws
N.C.G.S. 50-13.7 (modification of a child support order)
Provides that an order for support of a minor child may be modified or vacated at any time, upon motion in the cause and a showing of changed circumstances, which is North Carolina's standard for changing an existing child support order.
N.C.G.S. 50-13.10 (past-due support is vested)
Provides that each past due child support payment is vested when it accrues and may not thereafter be vacated, reduced, or otherwise modified in any way for any reason, so a modification cannot reduce support that already came due.
North Carolina Child Support Guidelines (effective January 1, 2023)
The statewide guidelines set the support formula and provide that, for an order at least three years old, a 15 percent or more difference between the existing order and a fresh guideline calculation is presumed a substantial change of circumstances warranting modification.
Form AOC-CV-600 (Motion and Notice of Hearing for Modification of Child Support Order)
The North Carolina Judicial Branch statewide form used to ask a District Court to modify a child support order; the form cites N.C.G.S. 50-13.7 and 50-13.10 and is provided free on the courts website.
Regional Variances
North Carolina child support modification rules at a glance
Qualifying threshold
You must show a substantial change in circumstances (N.C.G.S. 50-13.7). If the order is at least three years old, a 15 percent or more difference between the existing amount and a fresh guideline calculation is presumed a substantial change (North Carolina Child Support Guidelines).
Where to file
The District Court in the county that entered your existing order. If NC Child Support Services, an IV-D program under NC DHHS, manages your case, you can also ask that agency to review the order and pursue a change in court.
Modification form
Form AOC-CV-600, the Motion and Notice of Hearing for Modification of Child Support Order, is the free statewide form. Parents who agree can instead use a Consent Agreement and Order to Modify Child Support Order.
Retroactivity
A modification applies going forward. Each past-due payment is vested when it accrues and may not be vacated, reduced, or otherwise modified for any reason (N.C.G.S. 50-13.10), so support that already came due cannot be reduced.
Periodic review
If NC Child Support Services handles your case, you can generally request a review about every three years without showing a change, under federal rules, and sooner when a substantial change occurs.
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) since your last order. Attorney review of your filing is available through DocDraft.
Check the three-year, 15 percent presumption
Before you file days after startingRecalculate support under the North Carolina Child Support Guidelines using current income and overnights. If your order is at least three years old and the amounts differ by 15 percent or more, a substantial change is presumed (N.C.G.S. 50-13.7).
Complete Form AOC-CV-600
As soon as your circumstances change days after startingFill out the Motion and Notice of Hearing for Modification of Child Support Order (Form AOC-CV-600), describing the substantial change in circumstances. Use the free North Carolina Judicial Branch form and instructions.
File with the District Court
Promptly (a change applies going forward) days after startingFile your motion with the clerk of District Court in the county that entered your order and pay the fee, or ask about a fee waiver. Because a change applies going forward and past-due support is vested, file promptly (N.C.G.S. 50-13.10).
Serve the other parent
Before the hearing days after startingServe the other parent with your filed motion and notice of hearing following the court's service rules, then file proof of service. Proper service is required before a judge can change the order.
Attend the hearing and get the new order
On your hearing date days after startingGo to the hearing with your income proof and evidence of the change, let the judge recalculate support under the guidelines, and get the signed order. Keep paying the current order until then.
| 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) since your last order. Attorney review of your filing is available through DocDraft. | - | Before you file |
| Check the three-year, 15 percent presumption | Recalculate support under the North Carolina Child Support Guidelines using current income and overnights. If your order is at least three years old and the amounts differ by 15 percent or more, a substantial change is presumed (N.C.G.S. 50-13.7). | - | Before you file |
| Complete Form AOC-CV-600 | Fill out the Motion and Notice of Hearing for Modification of Child Support Order (Form AOC-CV-600), describing the substantial change in circumstances. Use the free North Carolina Judicial Branch form and instructions. | - | As soon as your circumstances change |
| File with the District Court | File your motion with the clerk of District Court in the county that entered your order and pay the fee, or ask about a fee waiver. Because a change applies going forward and past-due support is vested, file promptly (N.C.G.S. 50-13.10). | - | Promptly (a change applies going forward) |
| Serve the other parent | Serve the other parent with your filed motion and notice of hearing following the court's service rules, then file proof of service. Proper service is required before a judge can change the order. | - | Before the hearing |
| Attend the hearing and get the new order | Go to the hearing with your income proof and evidence of the change, let the judge recalculate support under the guidelines, and get the signed order. Keep paying the current order until then. | - | On your hearing date |
Frequently Asked Questions
An involuntary, ongoing income loss can support a modification, but you must file a motion to change the amount; support keeps accruing at the old rate until the court acts (N.C.G.S. 50-13.7). A judge may weigh whether you are earning what you reasonably could. Do not simply stop paying.
No. Either parent can file a motion for modification of a child support order on their own, and the other parent is served and can respond. If both parents agree on a new amount, they can submit a consent order for a judge to approve under the North Carolina Child Support Guidelines.
After you file Form AOC-CV-600, the District Court sets a hearing, often several weeks to a few months out depending on the county. A consent order or an NC Child Support Services review can be faster. Because a change applies going forward, filing promptly protects you (N.C.G.S. 50-13.10).
If NC Child Support Services, the IV-D program under NC DHHS, manages your case, you can ask it to review your order. The agency can pursue a modification in District Court when the guideline amount would change enough, and IV-D cases can generally request a review about every three years.
You can file whenever a substantial change in circumstances occurs (N.C.G.S. 50-13.7). If NC Child Support Services handles your case, you can generally request 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 going forward. Each past-due payment is vested when it accrues and may not be vacated, reduced, or otherwise modified for any reason (N.C.G.S. 50-13.10). Keep paying your current order to avoid building arrears while your motion is pending, since arrears cannot be erased.
Filing a motion to modify in District Court carries the standard civil filing fee, but you can ask the court about a fee waiver if you cannot afford it. Asking NC Child Support Services to review your case does not charge you a separate court fee for the review itself.
North Carolina provides a statewide form, AOC-CV-600, the Motion and Notice of Hearing for Modification of Child Support Order, on the Judicial Branch website. Parents who agree on a new amount can instead use a Consent Agreement and Order to Modify Child Support Order. Both go to the District Court.
Other North Carolina guides
Asset Protection Planning in North Carolina (2026)
Dealing With Debt Collectors in North Carolina (2026)
Expunging a Criminal Record in North Carolina (2026)
Filing a Workplace Harassment Complaint in North Carolina
Filing Chapter 7 Bankruptcy in North Carolina (2026)
Firing an Employee in North Carolina (2026)
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