How it works · official guideline
How child support is calculated in New Mexico
New Mexico applies a basic child support schedule, updated January 1, 2024, to the parents' combined adjusted gross monthly income and number of children; the schedule amount is presumed correct. A shaded self-support reserve area ($1,200 a month) bases support on the paying parent’s income alone when that income is low, and shared-responsibility cases use Worksheet B under NMSA § 40-4-11.1.[1]
Key facts: child support in New Mexico
| Guideline model | Income shares[1] |
|---|---|
| Low income | Self-support reserve: $1,200 per month[1] |
| Minimum order | Lowest schedule row: $60 (1 child) to $135 (6 children) for income $0–1,450[1] |
| Top of the guidelines | Above $40,000/month: $2,956 + 5.4% of income over $40,000 (1 child) … $6,755 + 11.6% (6 children)[1] |
| Guideline last checked | October 26, 2026 |
New Mexico’s model
Income shares
Combined adjusted gross income, then basic child support schedule (with self-support reserve area), split by income share.
No official calculator confirmed yet
Read the guideline: 8.50.108.10 NMACThe state child support agency or your court clerk can run the official numbers.
Why no calculator here? We publish a calculator only after it reproduces the state’s official numbers exactly. We haven’t matched New Mexico’s yet.
From the official text
The rules behind New Mexico’s numbers
The guideline is 8.50.108.10 NMAC. Open each rule to read the exact words.
- Low income
Self-support reserve: $1,200 per month
The self-support reserve is $1,200 a month for one person, slightly above the federal poverty guideline; in the shaded area of the schedule only the paying parent’s income is used.[1]
Official text · 8.50.108.7 NMAC
“self-support reserve is $1,200 per month for one person which is slightly higher than one hundred percent of the federal poverty guideline.”
- Minimum order
Lowest schedule row: $60 (1 child) to $135 (6 children) for income $0–1,450
The schedule’s first row, for income from $0 to $1,450 a month, shows $60 for one child up to $135 for six.[1]
Official text · 8.50.108 NMAC Appendix 1
“0 - 1,450 60 75 90 105 120 135”
- Top of the guidelines
Above $40,000/month: $2,956 + 5.4% of income over $40,000 (1 child) … $6,755 + 11.6% (6 children)
The schedule runs to $40,000 of combined adjusted gross monthly income; above that, support is the $40,000 amount plus a percentage of the excess (5.4% for one child up to 11.6% for six).[1]
Official text · 8.50.108 NMAC Appendix 1
“Income over $40,000 or more”
- Shared parenting time
Shared responsibility: Worksheet B under NMSA § 40-4-11.1(M); no self-support reserve method
For shared responsibility arrangements, support is figured with the same schedule using Worksheet B, and the self-support reserve method does not apply.[1]
Official text · 8.50.108.10(C) NMAC
“For shared responsibility arrangements, the basic child support obligation shall be calculated using the basic child support schedule, worksheet B and instructions contained in Subsection M of Section 40-4-11.1 NMSA 1978.”
- Review cycle
Schedule reviewed every four years
The schedule is reviewed every four years by the child support guideline commission.[1]
Official text · 8.50.108.10(A) NMAC
“The basic child support schedule is reviewed quadrennially by the child support guideline commission pursuant to Section 40-4-11.3 NMSA.”
Guideline: 8.50.108.10 NMAC (NM Health Care Authority, Child Support Enforcement), checked October 26, 2026.
Estimate and general information only — not legal advice. MediationList is a directory, not a law firm, and doesn’t endorse any mediator. Guidelines change; confirm with the state child support agency or your court (sources checked October 26, 2026). See also divorce laws in New Mexico and child support in every state.
Sources
New Mexico’s child support guideline, rules and official tools, read on the official sites, with the date we checked each.