Mineral Rights in a
New Mexico Probate: What Heirs Should Know

If you have been named the executor, personal representative, or administrator of an estate in New Mexico, you have probably thought most about the house: what it is worth, whether to sell it, and how long the process will take. But on land across the state, the mineral estate beneath the surface can be part of the probate too. Oil and gas interests under family acreage in the San Juan Basin or the Permian Basin, and in some areas coal and metals, are real property under New Mexico law. They pass with the estate, they have value, and they follow a few rules worth understanding before the close of administration.

The reassuring news is that the process is well traveled. The personal representative inventories the minerals, the estate or the heirs receive royalty income once ownership is documented, and the interests are conveyed with a recorded deed. This guide walks through how mineral rights work in a New Mexico probate, what happens to royalties while an estate is open, how the interests are valued, and the tax basics heirs in Albuquerque, Rio Rancho, Corrales, and Placitas should know. It is educational guidance, not legal or tax advice: your probate attorney and tax professional are the right people for decisions specific to your estate.

Are Mineral Rights Part of a Probate Estate in New Mexico?

Yes. In New Mexico, oil and gas mineral rights are real property interests, just like the land itself. When an owner dies, the minerals pass by will or, if there is no will, by intestate succession under the New Mexico Uniform Probate Code (NMSA Chapter 45). If the interest is titled in the decedent's name alone, or held as tenants in common, title generally cannot be transferred without a court-appointed personal representative. That means the minerals are part of the probate estate and must be inventoried, valued, and accounted for alongside the surface land.

What does that mean in practice for a family settling an estate? It means the personal representative holds the mineral interests for the benefit of the estate, keeps track of any income they produce, and eventually conveys them to the heirs or beneficiaries by deed. The minerals are not a floating detail that can be ignored: they are an asset of the estate with legal ownership, recorded county by county, and the records need to be made current before the estate closes.

What Are Mineral Rights, and How Do They Get Separated From the Surface?

A mineral right is the right to the oil, gas, coal, metals, and other substances beneath a piece of land. In much of New Mexico, the mineral estate was separated from the surface estate years or even decades ago. The family may have always assumed the land came with everything under it, only to find that an earlier deed severed the minerals at some point in the past. When minerals are severed, the landowner may hold the surface only, while the mineral owner holds the right to explore and develop what lies below, often under a lease.

The most common arrangement in the oil- and gas-producing parts of the state is a lease. The mineral owner leases the right to drill and produce to an operator, and in exchange receives a bonus, often paid upfront when the lease is signed, plus a royalty, which is a share of the value of production. The royalty owner typically receives a division order from the operator spelling out the decimal interest they own, and royalties are paid on a regular schedule. Sand, gravel, and stone are rarely severed in New Mexico, but oil, gas, and metals commonly are. This is exactly what the title search and a mineral ownership report reveal, and it changes what the estate has the right to sell or lease.

Where Are New Mexico's Producing Areas, and What About the Metro?

New Mexico's major oil and gas production sits outside the Albuquerque metro. The San Juan Basin in the northwest, centered around Farmington in San Juan County, has been producing natural gas for generations. The Permian Basin in the southeast, in Eddy and Lea counties near Carlsbad and Hobbs, is one of the most active oil and gas regions in the country. The Raton Basin in the northeast has produced coal and gas. Families living in Albuquerque, Rio Rancho, Corrales, and Placitas may hold mineral interests in any of these areas, often inherited from ranching or farming relatives who owned land there.

For a standard city lot in the metro, mineral value is usually not a factor: the lots in most Albuquerque and Rio Rancho subdivisions have long since been developed without a meaningful severed mineral interest. But acreage in the East Mountains, Placitas, Corrales, the North Valley, or Los Ranchos de Albuquerque can carry a different story, because older deeds in Bernalillo and Sandoval counties sometimes reserved or severed mineral interests decades ago. The title report will answer the question directly and should be reviewed early. If the estate's land is rural and has never been examined for minerals, a mineral ownership report from a landman or title company is a small investment that pays for itself.

How Mineral Rights Pass Through Probate

The probate path for mineral rights follows the same general shape as the probate path for land. The estate is opened with the court in the county where the decedent was domiciled, and the personal representative is appointed with Letters Testamentary or Letters of Administration. If the decedent lived in another state but owned New Mexico minerals, an ancillary probate in New Mexico is required to transfer the New Mexico real-property interest. For a county-by-county picture of where filings happen in the metro, see our guide to where to file probate in New Mexico.

Within three months after appointment, the personal representative must prepare an inventory of the estate's property, listing each item with its estimated value as of the date of the decedent's death (NMSA 45-3-706). Mineral interests are valued for this inventory by an appraiser who understands oil and gas: a date-of-death mineral appraisal looks at current production, lease terms, commodity prices, and the interest's fractional ownership to arrive at fair market value. The same appraisal becomes the basis for heirs when the interests are later sold, which is one of the reasons doing it properly matters.

When the time comes to convey the minerals, the personal representative executes a Personal Representative's Deed of Distribution of Mineral Rights. The deed must be signed, acknowledged, and recorded in every county where the minerals are located, because New Mexico keeps real property records county by county. The personal representative also has statutory transaction powers, including the power to perform enforceable contracts of the decedent to convey or lease land (NMSA 45-3-715). If the decedent had signed a lease or a contract that was still in force, the personal representative can carry it through.

Royalties Placed in Suspense While the Estate Is Open

When an operator learns that a mineral owner has died, it normally places royalty payments in suspense: the payments are held, not sent, until ownership is legally established. This is a deliberate protection. The operator cannot safely pay royalties to an estate or its heirs until the recorded deed or court order proves who owns the interest. Under the New Mexico Oil and Gas Proceeds Payments Act (NMSA 70-10-1 through 70-10-4), a payor that cannot timely pay must create a suspense account, and principal plus interest on the suspended funds must be paid to all persons legally entitled within 30 days of a final legal determination of entitlement.

Releasing suspended royalties is paperwork, not a fight. The estate or the heirs send the operator the recorded deed or court order, the letters or final order from the court, a death certificate, and a W-9. Once those documents establish ownership, the operator issues a new division order and begins paying the right people, including any suspended balance with interest. The practical lesson is simple: keep the ownership documents recorded and current, and the royalties follow. If you are unsure whether a loved one owned producing minerals, the estate attorney, a landman, or the operator's land department can help trace the interest.

Tax Basics for Heirs of Mineral Rights

One of the most comforting parts of inheriting minerals is the stepped-up basis. Inherited mineral rights receive a new basis equal to their fair market value on the date of the decedent's death, not the original purchase price. If a grandparent bought an interest for a few thousand dollars decades ago and it is worth far more at death, the heirs' basis is the value on the date of death, so a later sale can carry little or no capital gain. This is the same principle that applies to inherited real estate, and it is worth understanding before any sale decision.

Ongoing royalty income is different. Royalty checks are ordinary income to the heirs for federal tax purposes, reported on Form 1099-MISC and typically Schedule E of the income tax return. The good news is that royalty owners can often claim a depletion allowance, which recognizes that the asset is being used up as it is produced. Percentage depletion of 15 percent of gross oil and gas royalty income is available to many royalty owners under IRC Section 613A, and cost depletion based on the stepped-up basis is the alternative. A tax professional will choose the approach that fits each situation.

When inherited minerals are sold, the gain is the sale price minus the stepped-up basis, and inherited assets are treated as held long-term, so the gain is generally taxed at long-term capital gains rates rather than ordinary rates. Because mineral interests are real property, a like-kind 1031 exchange can sometimes defer the gain when the proceeds are reinvested. At the state level, New Mexico has no estate or inheritance tax, and royalty and capital gain income is taxed as income under New Mexico's graduated rates. Depletion rules, the 1031 requirements, and the capital gain math all deserve a conversation with your CPA or tax attorney before any sale closes. For more on the income side, see our post on the tax implications of selling inherited real estate in New Mexico.

What the Personal Representative Should Do, Step by Step

If the estate you are settling may include mineral interests, here is a practical checklist:

• Confirm what the estate owns. Review the title report and prior deeds, and if the land is rural or has never been examined, order a mineral ownership report. Know whether the estate owns the surface only, the minerals only, or both.
• Gather the lease and division order. If the minerals are producing, locate the oil and gas lease, the division order, and recent royalty statements, and note whether payments are already in suspense.
• Include minerals in the inventory and appraisement. Have a qualified appraiser value the interest as of the date of death, and list it in the inventory filed under NMSA 45-3-706.
• Keep the record current. Record the appointment and the personal representative's deed in every county where the minerals are located, and provide the operator with the death certificate, letters, and W-9 to release suspended royalties.
• Decide with the family. The heirs may choose to hold the minerals for royalties, sell them, or lease them. Each path has different tax and family consequences, so talk it through with the estate attorney and a tax professional before acting.
• Document everything for the final accounting. Keep a clean file of deeds, appraisals, royalty statements, and correspondence, and hand the complete mineral file to the heirs or the buyer at the close of administration.

Common Mistakes to Avoid With Mineral Interests in Probate

Mineral issues in New Mexico estates are rarely dramatic, but they are easy to overlook. The ones we see most often include:

• Assuming the surface and minerals go together. Decades of severed mineral interests mean ownership has to be proven, not assumed. The title work is what separates fact from memory.
• Letting royalties sit in suspense. Suspended funds earn interest under the Oil and Gas Proceeds Payments Act, but they only move once the ownership documents are recorded and the operator is notified.
• Leaving minerals out of the inventory. An inventory that omits a mineral interest understates the estate and complicates the final accounting and the beneficiaries' tax basis.
• Failing to record in every county. A mineral deed recorded in only one of several counties leaves ownership incomplete elsewhere and delays the release of royalties.
• Selling before understanding the taxes. The stepped-up basis means many inherited mineral sales are lightly taxed, but depletion recapture and state income treatment deserve a look from a CPA first.

Frequently Asked Questions About Mineral Rights in Probate

Related Resources

For more guidance on minerals, land, and probate in New Mexico, explore these resources:

• Selling Inherited Land in New Mexico: Personal representative authority, land valuation, and mineral and water rights for executors and heirs
• How to Value a Probate Property in New Mexico: Date-of-death values, appraisals, and pricing an estate property
• What Happens to Water Rights in a New Mexico Probate?: Acequia shares, domestic wells, and irrigation rights that run with inherited land
• Clearing Title on Inherited Property in New Mexico: Title searches, liens, and court-confirmed probate sales
• Tax Implications of Selling Inherited Real Estate in New Mexico: Stepped-up basis, capital gains, and what heirs pay
• Probate vs. Non-Probate Assets in New Mexico: What passes through probate and what transfers automatically
• Probate Real Estate Services in Albuquerque: Nysha's comprehensive guide to probate real estate in New Mexico

By Nysha Lynn Livingston, Realtor at MORE Realty.