Most of what adult children need to know about NM estate and incapacity planning concentrates in a small set of documents and three state-specific overlays: community-property law, the absence of state estate or inheritance tax, and (for many NM families) federal Indian law for tribal members.

The four documents to have in place this year

These apply to NM residents at every wealth level. Most cost $400–$1,500 through a NM-licensed attorney; the trust adds $1,500–$4,000.

1. Durable Power of Attorney (NMSA §45-5B-101 et seq.)

A NM Durable Power of Attorney names a person (the agent or attorney-in-fact) to handle your parent’s financial affairs if they become unable to act. New Mexico adopted the Uniform Power of Attorney Act in 2009, which provides a standardized framework with provisions about “hot powers” (gifting, creating trusts, changing beneficiaries) that require specific authorization.1

The DPOA should be durable (survives incapacity), in writing, and notarized. NM banks and brokerages can be cautious about older or out-of-state POAs; a NM-conforming POA prepared by a NM attorney is most likely to be accepted without friction.

2. Advance Health-Care Directive (NMSA §24-7A-1 et seq.)

NM combines the Health Care POA and Living Will into a single Advance Health-Care Directive under the Uniform Health-Care Decisions Act. The directive names an agent to make medical decisions when the principal cannot communicate, and expresses preferences about end-of-life care.2

The directive must be signed by the principal in the presence of two adult witnesses or notarized. NM publishes an optional statutory form, but the directive can take any form that meets the statute’s requirements.

3. MOST (Medical Orders for Scope of Treatment)

For NM residents with serious illness, the MOST form translates the Advance Directive’s general preferences into specific medical orders that EMS and hospital staff can act on. NM MOST is voluntary but widely used in chronic- illness and end-of-life care. The form is signed by both the patient (or their agent) and a physician or APRN.

4. Revocable Living Trust (NMSA §46A — NM Uniform Trust Code)

A revocable trust is the workhorse of NM estate planning when probate avoidance is the goal. Your parent transfers assets into the trust during life, retains full control as trustee, and names a successor trustee to manage and distribute assets at death without probate. NM has adopted the Uniform Trust Code, which gives the document broad national portability.3

NM’s community-property regime

New Mexico is a community-property state under NMSA §40-3-8. Most assets acquired during marriage are presumed to be community property — jointly owned by both spouses regardless of whose name is on title. This contrasts with common-law (separate-property) states where each spouse’s name on title generally determines ownership.4

Practical implications for caregiving and estate planning:

The Tribal-law overlay

For tribal members and their families, federal Indian law affects estate and incapacity planning in several distinct ways:5

For NM families with tribal members, finding counsel experienced with both NM and federal Indian law is critical. An attorney working only in NM state law may miss important AIPRA or tribal-jurisdiction issues.

No state estate or inheritance tax

New Mexico has neither a state estate tax nor a state inheritance tax. The federal estate tax (~$13.99M per individual in 2025; scheduled to sunset to roughly half that on January 1, 2026 unless Congress extends the higher exemption) is the only estate-transfer tax most NM families face — and the vast majority of NM families are well under the federal threshold.6 For most NM residents, estate planning is about probate avoidance, incapacity planning, and family coordination, not tax minimization.

Probate in NM

NM has adopted the Uniform Probate Code (NMSA §45-1-101 et seq.), which provides for informal probate that is generally efficient. Two main paths:

NM’s Medicaid Estate Recovery applies through probate. Assets that pass through probate are subject to recovery for Medicaid LTC paid out; assets passing by trust, beneficiary designation, or joint tenancy may not be. A properly funded revocable trust is the standard probate-avoidance tool.

NM property-tax breaks for seniors

NM offers several property-tax benefits for low-income seniors:

Apply through your county assessor’s office. These programs are materially under-claimed because county assessors don’t actively promote them.

What to do this quarter