How to Modify Child Support in Nevada: Filing Steps and Effective Date

By the FigureMyTax Editorial Team · How we calculate

To modify Nevada child support, ask the court for a review or file a motion, and give notice that you filed. Only payments not yet accrued at that point can change, and the court applies the guidelines if modification is appropriate.

How do you modify child support in Nevada?

1. Run the guideline amount in the Nevada child support calculator and see the gap in the modification calculator.
2. Ask the court for a review or file a motion to modify (NRS 125B.145), or ask the district attorney or the Division if they handle your case.
3. Give notice that you filed: only payments not yet accrued at that point can change (125B.140(1)(b)).
4. Show changed circumstances, such as a 20% change in gross monthly income.
5. Keep paying the existing order until the court changes it.

Why does the notice date matter?

Because payments that came due before notice are judgments by operation of law and cannot be retroactively modified or adjusted, while payments that had not accrued when a party gave notice that a motion was filed can be changed (125B.140(1)). A change in January and notice in July leaves six months at the old amount.

Can the Nevada district attorney help?

Yes. The district attorney of the county where the child or the other parent lives must take action to establish or adjust a support obligation and enforce it when asked by the parent or a public agency, but the district attorney does not represent the parent, only the state (NRS 125B.150). Ask whether your case is eligible.

Can the court change support at any time during the child’s minority?

In a custody action the court may at any time during the minority of the child make orders for custody, care, education, maintenance and support, and at any time modify or vacate its orders, even if the divorce is final, subject to the statute (NRS 125C.0045(1)).

What if the order has no review notice?

The court must ensure each person subject to a support order is notified at least once every 3 years that he or she may request a review, or that the order itself includes that notification (125B.145(3)). If you have never been told, you can still ask.

Does the review need a new request each time?

Yes. Each review conducted under the 3-year rule must be in response to a separate request (125B.145(1)). Ask again if you want another review later.

What happens at the Nevada guidelines stage?

The court applies the guidelines established by the Administrator of the Division of Social Services to determine or change the required support (NRS 125B.080). Bring both parents’ income proof.

Do I need a lawyer?

Not necessarily. The court clerk and the district attorney’s office can explain the forms, but the district attorney does not represent you (NRS 125B.150(3)). A licensed Nevada attorney can advise on your case.

How much does a late motion cost? An example

If notice happens 3, 6 or 9 months after your change, the relief you lose at a $300 monthly difference is:

What happens to unpaid support while the motion is pending?

It stays owed and keeps drawing interest. See how long Nevada arrears last and add up your balance.

Frequently asked questions

Official sources

• NRS 125B.145: review and modification of support orders
• NRS 125B.140: enforcement of support orders; retroactivity
• NRS 425.450: adjustment of support orders
• NRS 125C.0045: custody and support orders; termination
• 42 U.S.C. 666(a)(9): no retroactive modification of support already due
• NRS chapter 125B: obligation of support

This is general information, not legal advice. It is based on the cited Nevada statutes, rules and court opinions, and every case turns on its own facts. Confirm how the law applies to your situation with a licensed Nevada attorney.