NEW MEXICO SUPPORT GUIDELINE
New Mexico child support calculator & worksheet
New Mexico’s child-support guidelines use an income-shares worksheet and a basic-support schedule based on combined gross monthly income.
Current module status
| State | New Mexico |
|---|---|
| Status | Active base worksheet module |
| Guideline model | income shares monthly table |
| Primary income field | Combined monthly adjusted gross income |
How New Mexico child support law works
Legal starting point. New Mexico Statute section 40-4-11.1 and the administrative schedule use an income-shares model. The schedule starts with combined monthly adjusted gross income, while the statute and worksheets supply different paths for shared responsibility and low-income situations. Read New Mexico § 40-4-11.1 and 8.50.108 NMAC.
How the guideline is calculated
Worksheet A selects a basic obligation from the schedule and divides it by each parent’s income share. The self-support reserve, shared-responsibility Worksheet B, long visitation, child care, insurance, medical support, and deviations require the complete New Mexico worksheets.
What this site’s worksheet covers
Uses New Mexico 8.50.108 NMAC Appendix 1 Basic Child Support Schedule, effective January 1, 2024. Worksheet A applies the basic support schedule to combined monthly adjusted gross income, then divides the obligation proportionately between the parents under NMSA 1978, § 40-4-11.1. The schedule is published in $50 income bands through $40,000 and this module uses the next listed upper band for between-band income. The verified 2024 self-support-reserve shaded cells use the payer’s income alone and assign the full adjusted schedule obligation to the payer. The first schedule band covers monthly income through $1,450. Shared responsibility Worksheet B, long visitation abatements, child care, health insurance, extraordinary expenses, more than six children, medical support and deviations require the full New Mexico worksheet/calculator.
Documents that make the worksheet more useful
New Mexico Worksheet A or B and self-support reserve schedule. Gather the records that support the income, parenting-time, insurance, child-care, and other adjustment entries that apply to the family. The calculator applies the guideline formula described above and identifies any listed worksheet line it does not compute.
For a filing or agreement, complete the official court forms linked on this page. They use the same guideline structure explained here, and the court applies it to the facts of the case.
Before you enter your numbers
When does New Mexico use shared-responsibility Worksheet B?
New Mexico's shared-responsibility definition includes at least 35 percent of the year in each home and significant sharing of parenting duties, responsibilities, and expenses. Time alone is therefore not the entire definition. Worksheet B handles this arrangement differently from basic-visitation Worksheet A.
Prepare this: Document both the residential schedule and the division of parenting expenses. Use the statutory definition when selecting the worksheet instead of relying on a custody label.
Read the relevant official instructions: New Mexico § 40-4-11.1 and 8.50.108 NMAC.
These preparation notes explain one part of the state guideline. A new estimate does not change an existing order; a modification request does.
How New Mexico cases actually get to a number
Combine gross monthly income as the statute defines it, select the basic obligation, and allocate by share. Medical support and child care are worksheet add-ons. Imputed income disputes are common when a parent is underemployed.
New Mexico’s child-support guidelines use an income-shares worksheet and a basic-support schedule based on combined gross monthly income. That is a different path from neighboring states that use another model, so do not import a table, percentage, or overnight credit from somewhere else.
Parenting time in New Mexico
Shared-responsibility worksheets apply when physical custody is truly shared under New Mexico’s definitions. A primary-custody schedule plus a homemade overnight discount is not the shared-responsibility form.
Costs New Mexico usually treats separately
- Work-related child-care costs
- Medical and dental insurance
- Extraordinary medical expenses
- Other guideline add-ons
When New Mexico courts leave the guideline
The schedule is presumptive. Income above the schedule, a child’s special needs, and substantial travel (including between distant NM communities) are deviation or add-on facts.
Official New Mexico forms to keep beside this guide
New Mexico Worksheet A or B and self-support reserve schedule. The calculator applies the guideline formula described above and identifies any listed worksheet line it does not compute. The primary authority is the published New Mexico source. Fill the official form from source documents. Use this page only to check that you chose the right New Mexico path—primary versus shared, table versus percentage, add-ons versus basic support.
Where this is typically filed
District Court hears domestic-relations cases; CSED handles IV-D. Use the current New Mexico child-support worksheet and schedule.
Questions specific to New Mexico
Gross or net in New Mexico?
The basic schedule uses combined gross monthly income after the guideline’s adjustments.
When is shared responsibility used?
When physical custody meets the guideline’s shared-responsibility definition—not merely because both parents are involved.
Does imputation happen often?
Courts can impute income to an underemployed parent. That fight belongs in evidence, not in a silent worksheet reduction.
Run the calculator
Open the free support calculator, select New Mexico, complete the state worksheet, and print or export the output for review.