New Mexico Alimony Calculator
Estimate spousal support and how long it lasts under NMSA 1978, § 40-4-7. Enter your numbers below for an instant estimate with a step-by-step breakdown and statute citations.
New Mexico Alimony Calculator
This state publishes a guideline equation that takes a share of the payor’s income and subtracts a share of the payee’s.
Based on NMSA 1978, § 40-4-7 · Verified June 1, 2026
New Mexico has no statutory alimony formula
New Mexico has no statutory formula for long-term alimony. This figure applies the New Mexico Statewide Alimony Guidelines (NM Supreme Court Alimony Guideline Committee, rev. Sept. 6, 2006), which courts use for support WHILE a case is pending — not for the final award — so treat it as a ballpark only. The figure below is an estimate to give you a ballpark — a New Mexico judge decides the actual amount and duration using the factors listed beneath the calculator. About this method.
Enter income details to see your estimate
Factors New Mexico Courts Weigh
- •The age and health of, and the means of support for, each spouse
- •The current and future earnings and earning capacity of each spouse
- •Each spouse's good-faith efforts to maintain employment or become self-supporting
- •The reasonable needs of each spouse, including the marital standard of living, maintenance of medical insurance, and appropriateness of life insurance to secure support payments
- •The duration of the marriage
- •The amount of property awarded or confirmed to each spouse in the divorce
- •The type and nature of each spouse's assets (potential proceeds from selling property generally not counted absent exceptional circumstances)
- •The type and nature of each spouse's liabilities
- •Income produced by property owned by each spouse
- •Any agreements the spouses entered in contemplation of divorce or legal separation
How New Mexico Alimony Works
- •New Mexico has NO mandatory statutory alimony formula. NMSA § 40-4-7 gives judges broad discretion based on the listed factors; the New Mexico Supreme Court has held (Dunning v. Dunning) that a final alimony award must be a definite dollar amount, not an open-ended percentage of income.
- •The 30%/50% (and 28%/58% with child support) figures come from the New Mexico Statewide Alimony Guidelines, an advisory tool the NM Supreme Court endorsed for settlement negotiations, not a binding court schedule. Courts use it as a starting point and a check on ability to pay, then weigh the statutory factors.
- •Income is gross monthly income, defined the same way as for New Mexico child support (NMSA § 40-4-11.1(C)). When both alimony and child support apply, alimony is calculated first and the parties' incomes are then adjusted before computing child support.
- •Duration is discretionary: the guideline committee deliberately declined to set a durational formula. As a rule of thumb, marriages under 5 years generally get no alimony; 5-10 years tends toward rehabilitative/transitional support; in marriages of 20 years or more the court must reserve jurisdiction (indefinite, modifiable support) unless the decree/settlement provides otherwise (§ 40-4-7(F)).
- •New Mexico recognizes several support types under § 40-4-7(B): rehabilitative, transitional, indefinite (modifiable), and lump-sum (non-modifiable). Alimony generally terminates on the recipient's remarriage or cohabitation absent rare extraordinary circumstances. The guidelines recommend no income cap even in high-income cases but suggest alimony is usually inappropriate when the payor earns under $20,000/year.
This is an estimate for educational purposes only, not legal advice. Alimony is highly discretionary; a New Mexico judge can order a different amount or duration. Consult a licensed New Mexico family-law attorney about your situation. See the official New Mexico resource.
How New Mexico Calculates Alimony
New Mexico addresses spousal support under NMSA 1978, § 40-4-7. It uses a guideline equation that takes a percentage of the payor's gross income and subtracts a percentage of the payee's gross income, with statutory caps. The calculator above applies that equation to your figures and shows each step.
Unlike child support, alimony is one of the most discretionary areas of family law. Even in states with a guideline equation, the figure is a starting point a judge can adjust after weighing the statutory factors, the length of the marriage, and each spouse's needs and ability to pay. Treat any number here as an informed estimate, not a guaranteed award.
Key Rules in New Mexico
- New Mexico has NO mandatory statutory alimony formula. NMSA § 40-4-7 gives judges broad discretion based on the listed factors; the New Mexico Supreme Court has held (Dunning v. Dunning) that a final alimony award must be a definite dollar amount, not an open-ended percentage of income.
- The 30%/50% (and 28%/58% with child support) figures come from the New Mexico Statewide Alimony Guidelines, an advisory tool the NM Supreme Court endorsed for settlement negotiations, not a binding court schedule. Courts use it as a starting point and a check on ability to pay, then weigh the statutory factors.
- Income is gross monthly income, defined the same way as for New Mexico child support (NMSA § 40-4-11.1(C)). When both alimony and child support apply, alimony is calculated first and the parties' incomes are then adjusted before computing child support.
- Duration is discretionary: the guideline committee deliberately declined to set a durational formula. As a rule of thumb, marriages under 5 years generally get no alimony; 5-10 years tends toward rehabilitative/transitional support; in marriages of 20 years or more the court must reserve jurisdiction (indefinite, modifiable support) unless the decree/settlement provides otherwise (§ 40-4-7(F)).
- New Mexico recognizes several support types under § 40-4-7(B): rehabilitative, transitional, indefinite (modifiable), and lump-sum (non-modifiable). Alimony generally terminates on the recipient's remarriage or cohabitation absent rare extraordinary circumstances. The guidelines recommend no income cap even in high-income cases but suggest alimony is usually inappropriate when the payor earns under $20,000/year.
How Long Alimony Lasts in New Mexico
Under the AAML national guideline, duration is a share of the marriage length that rises with the length of the marriage; marriages of 20+ years may receive indefinite support. This is an illustration, not a state durational rule.
What Counts as Income
New Mexico's calculation uses each spouse’s gross income — earnings before taxes, including wages, bonuses, commissions, self-employment income, and many recurring sources. Courts can also impute income to a spouse who is voluntarily unemployed or underemployed, meaning support can be based on what a spouse could earn rather than what they currently do. Use your most recent pay stubs and tax return for the most accurate estimate.
Eligibility & Modifying an Order
Not every divorce results in alimony. New Mexico courts award it when one spouse has a genuine financial need and the other has the ability to pay, judged against the factors above.
Alimony orders can usually be modified when there is a substantial change in circumstances — for example, a significant change in either spouse's income, the recipient's remarriage or cohabitation, retirement, or the payor's loss of employment. The specific rules and any non-modifiable agreements depend on your court order and New Mexico law.
Frequently Asked Questions
Is this New Mexico alimony calculator accurate?
It applies the New Mexico guideline from NMSA 1978, § 40-4-7 to the numbers you enter, so it gives a close estimate of a typical guideline award. It is not an official court calculation — a judge can order a different amount after weighing the statutory factors.
Is alimony taxable in New Mexico?
For divorces finalized after December 31, 2018, alimony is not deductible by the payor and is not taxable income to the recipient under federal law. Most states follow the federal treatment, but check New Mexico's current rules for state income tax.
Does cheating affect alimony in New Mexico?
It depends on the state. Some states let courts consider marital misconduct among the alimony factors, while others bar it entirely. Review NMSA 1978, § 40-4-7 and speak with a New Mexico attorney about how fault is treated where you live.
Can alimony be changed later?
Usually yes. Alimony can often be modified when there is a substantial change in circumstances — such as a large change in income, the recipient's remarriage or cohabitation, or the payor's retirement — unless your order or agreement makes it non-modifiable.
Disclaimer
This calculator provides estimates for educational purposes only and is not legal advice. Alimony is highly fact-specific and discretionary; the amount and duration a New Mexico court actually orders may differ significantly from any estimate here. For advice about your situation, consult a licensed New Mexico family-law attorney.
Know someone who could use this? Share this free tool: