How Child Support Works with Custody in Nevada

Your custody arrangement directly controls how much child support you pay or receive in Nevada. A single overnight can shift you from one calculation method to another — and the difference can be hundreds of dollars per month.

Nevada abandoned its old flat-percentage model in 2020. The current system under NAC Chapter 425 uses a progressive, tiered formula based on the paying parent's gross monthly income (GMI). But the formula that applies — and whether both parents' incomes factor in — depends entirely on whether you have primary or joint physical custody.

The NAC 425 Tiered Formula

Nevada calculates child support across three income brackets. For one child:

• First $6,000 of GMI: 16%
• $6,001 to $10,000: 8%
• Over $10,000: 4%

For two children, the percentages jump to 22% / 11% / 6%. Three children: 26% / 13% / 6%. Each additional child adds 2% to the first tier.

Example: A parent earning $8,000/month with one child owes $6,000 × 16% ($960) plus $2,000 × 8% ($160) = $1,120/month in base support.

This applies when one parent has primary physical custody — meaning the child spends 60% or more of overnights (220+) with them. Only the non-custodial parent's income matters.

The Joint Custody Offset (Wright v. Osburn)

Everything changes at 146 overnights. Once each parent has at least 40% of annual overnights (the threshold established in Rivero v. Rivero), Nevada treats the arrangement as joint physical custody and applies the Wright v. Osburn offset method:

1. Calculate each parent's individual support obligation using the tiered formula
2. Subtract the lower amount from the higher amount
3. The higher-earning parent pays the difference

Example: Parent A earns $8,000/month (obligation: $1,120). Parent B earns $5,000/month (obligation: $800). The offset means Parent A pays $320/month — not the $1,120 they would owe under primary custody.

That's a $800/month difference triggered by crossing the 146-overnight line.

Why the 146-Overnight Threshold Matters So Much

The jump between 145 and 146 overnights is the sharpest financial cliff in Nevada family law. At 145 overnights, the non-custodial parent pays support based solely on their income. At 146, both incomes factor in through the offset calculation.

For a parent earning $10,000/month with one child, the difference can exceed $700/month — over $8,400/year. This creates intense negotiation pressure around custody schedules, because even minor scheduling adjustments (one overnight per week) can swing the financial outcome dramatically.

Additional Costs Beyond Base Support

The base formula is the starting point, not the total. Nevada also requires parents to split:

• Health insurance premiums for the child (NAC 425.135)
• Work-related childcare costs proportional to income (NAC 425.130)
• Unreimbursed medical expenses over $100 annually

The court can also adjust support upward or downward based on deviation factors under NAC 425.150 — extraordinary educational needs, support for other children, or unusual travel costs for custody exchanges.

Low-Income Protections

If a parent's income falls between 75% and 150% of the Federal Poverty Guidelines, Nevada applies a separate Low-Income Schedule published annually by the Administrative Office of the Courts. The minimum obligation is $100 per month per child, unless a judge specifically finds the parent cannot pay even that amount.

Practical Steps to Calculate Your Support

Before mediation or your Case Management Conference, run your own numbers:

1. Gather three months of pay stubs for both parents
2. Calculate each parent's gross monthly income (all sources — wages, overtime, bonuses, self-employment, pension distributions)
3. Apply the tiered percentages for your number of children
4. If you have joint custody (146+ overnights each), calculate both obligations and subtract
5. Add proportional shares of health insurance and childcare

The Nevada Child Custody & Parenting Plan Guide includes a child support worksheet that walks through the NAC 425 formula step by step, with space to calculate both primary and joint custody scenarios side by side.

Tax Implications

Child support payments are not taxable income for the receiving parent and not deductible for the paying parent. However, the physical custody designation determines who can claim the Child Tax Credit. The primary custodial parent gets the default claim — in joint custody, parents typically alternate years or split credits by filing IRS Form 8332.

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