New Mexico Child Support Calculator
Estimate child support under NMSA 1978 § 40-4-11.1. Calculate baseline support, parenting time overnights, health insurance credits, and work-related childcare costs.
1. Enter Case Information
NM RulesEstimated Child Support
NM EstimateUnderstanding New Mexico Child Support Guidelines
New Mexico utilizes an Income Shares model under NMSA § 40-4-11.1. Combined gross monthly income determines basic support, with deductions for medical insurance and work-related daycare.
Shared Custody & Overnights in New Mexico
Worksheet B applies when each parent has the child for at least 35% of the year (128 overnights), applying a 1.5 shared custody multiplier and time proportional offset.
Calculate Your Exact Overnights →Official Court Worksheets & Forms
Family court filings in New Mexico require completing: Worksheet A (Basic Support) and Worksheet B (Shared Custody). Review official forms before filing.
View State Worksheets Directory →Worked Calculation Example: Standard New Mexico Scenario
Here is a realistic line-by-line computation for two parents in New Mexico raising 2 children:
| Guideline Worksheet Line Item | Parent A (Paying) | Parent B (Receiving) | Combined / Order Total |
|---|---|---|---|
| Monthly Guideline Income | $4600 | $3100 | $7700 |
| Parental Income Proportion | 60% | 40% | 100% |
| Basic Child Support Schedule Obligation | - | - | $1290 /mo |
| Work-Related Childcare Cost | - | - | +$360 /mo |
| Health & Dental Insurance Premium | - | - | +$200 /mo |
| Total Combined Child Financial Needs | - | - | $1850 /mo |
| Final Estimated Monthly Support Order | Paid by Parent A to Parent B | $1045 /month | |
Frequently Asked Questions in New Mexico
Key legal questions regarding child support establishment, modifications, and enforcement in New Mexico.
What is the 35% rule in New Mexico child support?
New Mexico requires a parent to exercise at least 35% of the year (128 overnights) to use Worksheet B for shared physical custody.
Does New Mexico use gross or net income?
New Mexico uses gross monthly income, allowing limited deductions for preexisting child support orders and health insurance costs.
How are child care tax credits handled in New Mexico?
Actual work-related child care costs are adjusted downward by 20% on the worksheet to account for federal and state tax credits.
Next Useful Steps for Your Case
Take the next step in preparing your family financial documentation:
Convert Irregular Income
Standardize hourly wages, seasonal overtime, or commissions into monthly gross figures.
Launch Income Tool →Explore 50/50 Custody
See how equal time sharing and reciprocal guidelines impact final transfer payments.
50/50 Custody Tool →Download Official Worksheets
Find the exact PDF court forms and financial affidavits required by your court clerk.
Court Worksheets Directory →