New Mexico Child Support
Calculator (2026)
New Mexico uses an income shares model per NMSA §40-4-11.1. Basic obligation from published schedule (Health Care Authority). Each parent pays proportional share based on income ratio. Rebuttable presumption that guideline amount is appropriate.
Calculate Your Child Support →$39 one-time · No account needed · Report by email in 5 minutes
Free Child Support Calculator — New Mexico
How Child Support Is Calculated in New Mexico
New Mexico calculates child support using the Income shares using combined gross income established under NMSA §40-4-11.1. This is a statutory formula that leaves limited room for judicial discretion on the base calculation amount, ensuring consistency and predictability for families across the state.
The Formula
Total obligation from schedule (based on combined gross + number of children) x obligor income share percentage.
The calculation begins with determining each parent's net disposable income, which includes virtually all sources of income minus taxes, mandatory payroll deductions, and certain hardship deductions. The court then applies the statutory formula using the time each parent has primary physical responsibility for the children and the applicable income allocation brackets.
Beyond the base formula amount, New Mexicorequires additional contributions for mandatory add-on expenses. These typically include childcare costs necessary for the custodial parent's employment or education, uninsured healthcare expenses for the children, and in some cases, educational and travel costs. These add-ons are split between parents in proportion to their respective incomes.
Primary statute: NMSA §40-4-11.1
Key Child Support Rules in New Mexico
Income shares model using combined gross monthly income.
Basic obligation from published NM Health Care Authority schedule.
Each parent pays proportional share based on percentage of combined income.
Verified anchor: 1 child @ $6,000 combined = $758/mo.
Schedule values are APPROXIMATIONS of the published schedule.
Schedule reviewed quadrennially by child support guideline commission.
What Makes New Mexico Child Support Unique
Rebuttable presumption that guideline amount is appropriate.
No mandatory waiting period after filing.
Calculate Your New Mexico Child Support
Answer a few questions about your income, custody, and children. Get your personalized estimate.
New Mexico Divorce Procedure at a Glance
Residency Requirement
6-month domicile in NM required (§40-4-5)
Mandatory Waiting Period
NO mandatory waiting period after filing
No-Fault Ground
Incompatibility (§40-4-1) — only ONE spouse needs to claim it; no consent needed; once found, divorce must be granted
State Income Tax
Progressive 1.5% to 5.9% (HB 252, Laws 2024). Simplified: <$25K ~2%, $25K-$100K ~4%, $100K-$200K ~5%, $200K+ ~5.9%.
In-Depth New Mexico Divorce Guides
More New Mexico Divorce Calculators
Frequently Asked Questions About New Mexico Child Support
How is child support calculated in New Mexico?
New Mexico uses the Income shares using combined gross income under NMSA §40-4-11.1. New Mexico uses an income shares model per NMSA §40-4-11.1. Basic obligation from published schedule (Health Care Authority). Each parent pays proportional share based on income ratio. Rebuttable presumption that guideline amount is appropriate.
What factors affect New Mexico child support amounts?
Key factors include both parents' income, the number of children, custodial time share, mandatory add-on expenses (childcare, health insurance), and any applicable deductions. Income shares model using combined gross monthly income.
Can New Mexico child support be modified after the divorce?
Yes. Either parent can request a modification if there has been a material change in circumstances, such as a significant change in income, custody arrangements, or the needs of the child. The court will recalculate support using the same statutory formula.
What is the New Mexico child support formula?
Total obligation from schedule (based on combined gross + number of children) x obligor income share percentage.
Know Your New Mexico Child Support Number
Get a personalized child support calculation based on New Mexico's actual statutory formula.
Start My Free New MexicoEstimate →This tool provides educational estimates based on New Mexico family law and does not constitute legal advice. Child support calculations are approximations of the statutory formula and may differ from court-ordered amounts. Consult a licensed New Mexico family law attorney before making decisions. Primary statute: NMSA §40-4-11.1.