Calculator · NAC 425 · open to everyone
Nevada child support
The current guidelines, computed exactly: NAC 425 as amended by R139-23 (effective July 2025), correct at every income-tier boundary, with the current low-income schedules and the childcare/medical add-ons apportioned by income. Every figure cites its regulation. No login - this one is open to everyone, for you or the attorney assisting you.
The rest of the toolset - arrears schedules, judgment interest, retirement division, the Preparer and Scrutinizer, saved client matters - runs on a free practitioner account.
Provided without warranty. Verify every figure against the primary sources before relying on it. Not legal advice. See Terms.
What it computes
The guideline amount, exactly
Support calculators drift out of date faster than any other family-law tool, because the guidelines actually move: new regulations, an annually republished low-income schedule, an amendment that restructures the obligation itself. This one is rebuilt from the primary sources and checked against them, so the figure you quote in a settlement letter is the figure the court will reach.
The base obligation, tier by tier
The schedule is marginal - each rate applies only to the slice of monthly gross income in its band, then the slices are summed. The engine is exact at the $6,000 and $10,000 boundaries and for any number of children, including the per-child increments past four. $8,000 of income and one child is $1,120.00, to the cent.
The total-obligation model
R139-23 · NAC 425.130 / 425.135
Since July 2025 the order runs on the total obligation: base support plus the equitable division of reasonable childcare costs and medical support. The calculator divides the add-ons in proportion to income - the equitable division the court must make, with each parent's share shown separately from the base transfer.
Every custody arrangement
NAC 425.115 · Wright v. Osburn
Primary, joint, and split custody - including the split-primary arrangement R139-23 added. In joint custody each party's total obligation is computed and offset, and the higher-obligation parent pays the full difference, the rule of Wright v. Osburn, 114 Nev. 1367 (1998).
The current low-income schedule
When the obligor's income falls within the ceiling of the low-income schedule published annually by the Administrative Office of the Courts, the calculator flags it and shows the scheduled amount from the current published table - not last year's, and not an approximation of it.
Workflow
Three inputs to a defensible number
- 01
Enter incomes and children
Each parent's monthly gross income (NAC 425.025 - wages, commissions, overtime, bonuses, alimony received) and the number of children. Cents are accepted; invalid input is rejected, never silently zeroed.
- 02
Choose the custody arrangement and add-ons
Primary, joint, or split custody, plus monthly childcare and medical-premium amounts if any. Split custody takes the per-parent child counts.
- 03
Read the cited result
Who pays whom and how much, the band-by-band ledger behind the base figure, each parent's add-on share, the low-income flag where it applies, and the authority for every line - ready to check against any figure opposing counsel hands you.
Authorities
Built from the filed text
NRS 125B.080 directs the court to the guidelines adopted under NRS 425.620 - NAC 425, effective February 1, 2020 and amended by R139-23 effective July 7, 2025. The engine implements NAC 425.140 (base schedule), 425.145 (low-income schedule, current AOC table), NAC 425.130 and 425.135 (childcare and medical support), 425.115 (custody arrangements), and 425.025 (gross income), with the Wright v. Osburn offset for joint custody. Adjustment factors under NAC 425.150 - special needs, other legal responsibilities, transportation costs, ability to pay - remain findings for the court, and the result states as much rather than guessing at them.
Questions
What attorneys ask
- Is this current after the 2025 amendments?
- Yes. The engine is built from the approved text of R139-23, effective July 7, 2025 - the total-obligation model, the split-primary custody extension, and the gross-income clarifications - not from stale codified pages. The base percentages of NAC 425.140 were unchanged by the amendment and are applied as written.
- Are the percentages applied to all income or in brackets?
- In brackets. Each rate applies only to the portion of monthly gross income within its band - 16% of the first $6,000, 8% of the portion over $6,000 up to $10,000, and 4% above $10,000 for one child - and the results are summed. Applying the first-tier rate to total income is the most common calculation error the schedule invites.
- How does the joint-custody offset work?
- Each party's total obligation is computed on their own income, and the parent with the higher obligation pays the other the full difference - not half of it. That is Wright v. Osburn, 114 Nev. 1367 (1998), carried forward under NAC 425.115(3).
- Is there a minimum or a cap?
- Neither, as fixed numbers. The old $100 minimum was repealed in the 2020 transition to the NAC 425 guidelines; the functional floor is the low-income schedule, and below its lowest row the amount is discretionary under NAC 425.145(2). There is no presumptive maximum - the top band rate applies to all income above $10,000, and deviation either way requires written findings under NAC 425.100.
F-Law provides informational tools, not legal advice, and creates no attorney-client relationship. The guideline amount is a rebuttable presumption; deviations require written findings under NAC 425.100. Every figure above cites the regulation it comes from.