By Anthony Spratley, New Mexico family law attorney and founder of Genus Law Group. Updated November 11, 2026
Your spouse had an affair. You built the business. So the spouse who cheated shouldn't walk away with half of it.
New Mexico law doesn't see it that way.
That belief is back in the spotlight. On November 8, 2026, Nvidia CEO Jensen Huang admitted to an extramarital affair in a memo to employees. Nothing has been filed in court, and this post isn't about his marriage or his money.
It's about yours. If you own a business in New Mexico and are facing divorce, here's how the law treats your company, your spouse's conduct, and the money in between.
Is a Business Community Property in New Mexico?
Usually, yes. If you started or bought the business during the marriage, New Mexico presumes it belongs equally to both spouses.
Under NMSA 1978 § 40-3-8, property acquired during the marriage is community property unless it fits a separate property category. Section 40-3-12 adds a presumption that property acquired during the marriage is community. Your spouse doesn't need to work in the business or appear on any ownership documents.
The entity type doesn't change this. An LLC, an S corporation, and a sole proprietorship in your name alone are all treated the same way. What matters is when and how the business was acquired. You can learn more about property division in New Mexico here.
What If You Started the Business Before the Marriage?
A business you owned before the marriage starts out as your separate property. But your spouse may still have a claim to part of its growth.
Any increase in value is presumed separate. Your spouse can overcome that presumption by showing community labor or community money drove the growth. In Jurado v. Jurado, 1995-NMCA-014, the New Mexico Court of Appeals confirmed the community is entitled to a lien against separate property for value created by community labor during the marriage.
This comes up most when an owner takes a low salary and pours years of effort into the company. Your work during the marriage is a community asset. If you weren't fully paid for it, the value it created may be partly community.
Commingling is the second risk. Running personal expenses through the business, depositing revenue into joint accounts, or using marital savings to cover payroll all blur the line. In New Mexico, clean records are often the difference between keeping the business and sharing its growth.
Built Your Business Before the Marriage? Don't Assume It's Safe.
Tracing separate property takes records, experts, and a plan made before the other side makes theirs. Genus Law Group helps New Mexico business owners protect what they built.
Call (505) 317-4455 or visit genuslawgrp.com to schedule your consultation.
How Is a Business Valued in a New Mexico Divorce?
Through expert analysis. Most contested business cases in New Mexico involve a forensic accountant or certified business appraiser, and often one for each side.
Appraisers generally rely on one or more of three approaches:
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Income approach: what the business is expected to earn, converted to a present value
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Market approach: what comparable businesses have sold for
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Asset approach: what the business owns minus what it owes
Goodwill is often where the fight happens. New Mexico courts have treated goodwill in a business or professional practice as a divisible community asset since Hurley v. Hurley (1980). Expect your spouse's expert to push that number up and your expert to test every assumption behind it.
A buy-sell or shareholder agreement can also shape the number. In Hertz v. Hertz (1983), the New Mexico Supreme Court gave weight to a stock restriction agreement that fixed the value of goodwill. Later cases show courts won't treat these agreements as automatically controlling.
Does Infidelity Affect Property Division in New Mexico?
No. New Mexico divides community property equally, and an affair doesn't change the split.
NMSA 1978 § 40-4-1 lists adultery as a ground for divorce, alongside incompatibility. Most New Mexico cases are filed on incompatibility, the no-fault ground, because proving adultery rarely changes the outcome. A judge in the Second Judicial District Court in Albuquerque or the Third Judicial District Court in Las Cruces won't award you more of the business because your spouse cheated.
That frustrates a lot of business owners. But there is one place where an affair can still hit the balance sheet.
Can Community Money Spent on an Affair Be Recovered?
Sometimes. If your spouse used community funds on the affair, you may be able to recover your share, but you have to prove more than the spending itself.
In Autrey v. Autrey, 2022-NMCA-042, the New Mexico Court of Appeals explained that once community money is spent, there's usually nothing left to divide. The exception is a special circumstance, such as a breach of the fiduciary duty spouses owe each other or a violation of a court order. Under NMSA 1978 § 40-2-2, spouses deal with each other in a relationship of confidence and trust.
Spending that may qualify includes:
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Gifts, jewelry, or cash given to an affair partner
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Travel, hotels, and dinners
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Rent or living expenses paid for another person
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Personal spending disguised as business expenses
For business owners, that last item matters most. Affair spending often runs through company cards and expense accounts. A forensic accountant can trace it, and documentation is what makes the claim hold up in a New Mexico courtroom.
How Do You Protect Your Business During a New Mexico Divorce?
Keep it running exactly as it was. Your business is an asset in the case, and the court expects you to preserve it.
When a New Mexico divorce is filed, the court enters a Temporary Domestic Order under Rule 1-121 NMRA. It binds both spouses and restricts transferring, hiding, or disposing of property outside the usual course of business. Violations can lead to sanctions, including costs and attorney fees. Moving money, cutting your own salary, or signing unusual contracts can look like hiding assets.
A few more priorities:
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Review your operating or partnership agreement for divorce and transfer provisions
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Tell partners only what they need to know
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Keep employees focused on the work, not your personal life
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Keep personal and business finances fully separate from here forward
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Stay off social media about the case
Anthony Spratley served more than 20 years in the Air Force, including as a JAG officer. Military planning starts with a simple rule: control what you can before the other side moves. A business divorce works the same way. The owners who come out strongest prepare early, stay disciplined, and keep emotion out of business decisions.
Can a Prenup or Postnup Protect Your Business in New Mexico?
Yes. A valid written agreement can keep your business, and its growth, as separate property.
Prenuptial agreements in New Mexico are governed by the Uniform Premarital Agreement Act, NMSA 1978 §§ 40-3A-1 through 40-3A-10. They must be in writing and signed by both spouses. They hold up best with full financial disclosure and separate attorneys for each side.
Already married? Spouses can contract with each other under § 40-2-2, and § 40-3-8 recognizes property designated as separate by written agreement. A postnuptial agreement can settle the business question now, before conflict starts. Learn more about prenuptial and postnuptial agreements in New Mexico.
If you co-own the business, a buy-sell agreement adds another layer by controlling who can hold ownership and how a departing interest is valued.
What Happens If a Business Divorce Is Contested in New Mexico?
It takes longer, costs more, and puts the business at the center of the case. Expect discovery, competing valuations, and possibly a trial.
Your spouse can request tax returns, financial statements, bank records, payroll, and contracts. Each side may hire its own valuation expert. Many New Mexico cases go to mediation or a settlement conference before a judge decides.
If you want to keep the business, the most common outcomes are:
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You keep the business and your spouse receives other assets of equal value
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You buy out your spouse's share over time under a structured payment plan
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The business is sold and the proceeds are divided
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Both spouses remain co-owners, which is rare and rarely a good idea
Cases like these need a firm that negotiates from a position of trial readiness. Learn more about high asset divorce in New Mexico.
Your Business Is on the Line. Your Strategy Should Be Too.
Genus Law Group represents business owners and their spouses in Albuquerque, Las Cruces, and across New Mexico. Work with an attorney who prepares like the outcome depends on it, because it does.
Call (505) 317-4455 or visit genuslawgrp.com.
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If you're facing a divorce or custody battle in New Mexico, don't wait. Call Genus Law Group at (505) 317-4455, fill out our contact form, or chat with a representative now to schedule your consultation. Our experienced Albuquerque and Las Cruces divorce and custody attorneys are ready to fight for you and help you protect what matters most.
