New Mexico Wills Attorney

A will is the foundation of almost every estate plan. It's the document that tells a court who should receive your property, who should raise your minor children, and who should be in charge of carrying out your wishes. Without one, New Mexico law makes all of those decisions for you, and the results are often not what you would have chosen.

At Genus Law Group, our New Mexico wills attorneys help families in Albuquerque, Las Cruces, and across the state create wills that are valid, clear, and built around their actual lives. Whether you need a straightforward will or a will that works alongside a trust, we can help. Call our Albuquerque office at 505-317-4455 or our Las Cruces office at 575-215-3500 to schedule a consultation.

What is a Will and who needs one in New Mexico?

A will is a legal document that directs how your property is distributed after you die and names a personal representative to carry out those instructions. In New Mexico, a will also lets parents nominate a guardian for minor children. Any adult who owns property, has children, or wants a say in who handles their affairs should have a valid, properly witnessed will.

That short answer covers the basics. The rest of this page explains what New Mexico law requires for a will to hold up, what a will can and cannot do, and when you should update one.

What Makes a Will Valid in New Mexico?

New Mexico sets specific requirements for a will to be legally valid. These rules come from the New Mexico Uniform Probate Code, and getting them wrong is one of the most common reasons a will fails in probate. A will that does not meet these requirements can be thrown out, which means the estate is treated as if no will existed at all.

Under New Mexico law, a valid will generally must meet these conditions NMSA § 45-2-501 and § 45-2-502

The person making the will (the testator) must be at least 18 years old and of sound mind, meaning they understand what they own and what it means to give it away.
The will must be in writing. New Mexico does not recognize oral wills, sometimes called nuncupative wills.
The will must be signed by the testator, or signed by someone else in the testator's presence and at the testator's direction.
The will must be signed by at least two witnesses. Each witness must sign the will after watching the testator sign it, or after the testator acknowledges the will or signature.

A note on handwritten wills. Some states recognize what's called a holographic will, a will written entirely in the person's handwriting without witnesses. As of mid 2026 New Mexico does not appear to recognize unwitnessed holographic wills. A handwritten will may be valid in New Mexico, but only if it is signed and witnessed like any other will. This is a point where online sources conflict, so do not rely on a handwritten, unwitnessed document without talking to an attorney.

New Mexico law also allows a will to be made self-proving. A self-proving will includes a notarized affidavit signed by the testator and the witnesses under NMSA § 45-2-504. New Mexico does not require a will to be notarized to be valid, but a self-proving affidavit makes probate simpler later, because the court does not have to track down the witnesses to confirm the signatures.

What a Will Does and Doesn't Cover

One of the most common misunderstandings about wills is that a will controls everything you own. It doesn't. A will only governs certain kinds of property, and knowing the difference is essential to building a plan that actually works.

A will generally does cover:

Property titled in your name alone with no beneficiary designation
Personal belongings, vehicles, and household items
The naming of a personal representative (also called an executor) to wind up your affairs
The nomination of a guardian for your minor children

A will generally does not cover:

Property you own jointly with right of survivorship, which passes automatically to the surviving owner
Life insurance and retirement accounts with a named beneficiary, which pass directly to that beneficiary
Bank or investment accounts with a payable-on-death or transfer-on-death designation
Assets held in a living trust, which are governed by the trust document

This is why beneficiary designations matter so much. A beneficiary designation on a retirement account or life insurance policy overrides what your will says. If your will leaves everything to your current spouse but your old 401(k) still names an ex-spouse, the 401(k) goes to the ex-spouse. Reviewing beneficiary designations is part of any complete estate plan.

Types of Wills in New Mexico

Not every will looks the same. The right type depends on your family situation and whether your plan includes a trust.

Simple will. A straightforward will that names beneficiaries, a personal representative, and a guardian for minor children. This works well for many New Mexico families with uncomplicated estates.
Pour-over will. A will used alongside a living trust. It "pours" any assets that were not transferred into the trust during your life into the trust at your death, so the trust controls everything in the end.
Testamentary trust will. A will that creates a trust at the moment of death, often used to manage property for young children or a beneficiary who needs oversight.

A handwritten will, as covered above, is not a separate legal category in New Mexico. A handwritten document still has to meet the same signing and witnessing requirements as a typed will. Our New Mexico wills attorneys can help you decide which type of will fits your situation, and whether a will alone is enough or whether a trust would serve your family better.

When You Should Update Your Will

A will is not a one-time document. Life changes, and a will that made sense ten years ago may now send your property to the wrong people. We generally recommend reviewing your will every three to five years, and sooner after any of these life events:

Marriage or divorce
The birth or adoption of a child
The death of a beneficiary, a named guardian, or your personal representative
A significant change in your assets, such as buying a home or selling a business
A move to or from New Mexico, since states have different will requirements
A change in your relationship with anyone named in the will

Divorce is an especially important trigger. If you have recently divorced or are in the process, your will and your beneficiary designations should both be reviewed.

Will Contests in New Mexico

Most wills are accepted by the probate court without dispute. Some are challenged. A will contest is a formal objection that asks the court to declare a will invalid, in whole or in part.

In New Mexico, a will is most often contested on one of these grounds:

Lack of capacity. A claim that the testator did not understand what they owned or what the will did when they signed it.
Undue influence. A claim that someone pressured or manipulated the testator into signing a will that did not reflect their true wishes.
Improper execution. A claim that the will was not signed or witnessed correctly under New Mexico law.
Fraud or forgery. A claim that the will or a signature is not genuine.

Will contests are emotionally and financially costly, and they often pit family members against each other. The best protection against a contest is a will that is properly drafted, properly executed, and clear about its intentions. When a contest does happen, our team can represent either the personal representative defending the will or a family member raising a legitimate concern.

Why Families Choose Genus Law Group

Genus Law Group was founded by Anthony Spratley, a U.S. Air Force veteran and former JAG officer. The firm is known across New Mexico for taking the time to listen before recommending anything.

When you work with our New Mexico wills attorneys, you get:

Plain-English explanations. Wills involve legal terms most people never use. We translate them so you understand exactly what you are signing.
A will built around your family. We do not hand you a fill-in-the-blank template. We ask about your situation and build the will to match it.
A firm that handles family law too. Many will questions touch on divorce, custody, or guardianship. Because Genus Law Group handles both family law and estate planning, we see the whole picture.
Two offices, statewide service. With offices in Albuquerque and Las Cruces, we serve families across New Mexico.

Get Help With Your Will in New Mexico

Creating a will is one of the most caring things you can do for the people you love. It does not have to be complicated or uncomfortable. Our team will walk you through it.

Call our Albuquerque office at 505-317-4455 or our Las Cruces office at 575-215-3500, or schedule a consultation through our contact form. We offer a consultation where we listen to your situation before we talk about strategy.