New Mexico Property Tax 2026: Senior Freeze, Proportional Veterans Exemption

New Mexico offers a senior valuation freeze that locks property value at an older base year, and following voter approval of Constitutional Amendment 1 in November 2024, extends proportional veterans exemptions to all service-connected disabilities from 10 percent to 100 percent starting tax year 2026. This 2026 guide covers the freeze, the new veteran benefits, and the 30-day appeal process.

How New Mexico Property Tax Works

New Mexico property tax is administered at the county level by 33 assessors with state oversight from the Property Tax Division (PTD) of the Taxation and Revenue Department.

Assessment

New Mexico assesses at one-third (33.33%) of full value for tax calculation purposes. However, the valuation cap and limits substantially protect long-term homeowners.

Senior Valuation Freeze (Age 65+ / Disabled)

Low-income owners age 65+ or disabled can have their property value frozen at the level it was in 2001, the year they turned 65 (if after 2001), or the tax year after they first owned and occupied the property.

Eligibility for 2026

• Age 65+ or disabled
• Single-family dwelling is primary residence
• Previous year's modified gross household income $40,400 or less (some counties $44,200 for 2026)

Application

File annually for the first three years. After 3 consecutive years of approval with no change in eligibility, the freeze continues without further filing.

Veterans' Property Tax Exemptions

Standard Veterans Exemption

$10,000 of taxable value exempt for property owned by a veteran or veteran's unmarried surviving spouse.

Constitutional Amendment 1 (November 2024) — Proportional Disabled Veterans Exemption

Effective tax year 2026: New Mexico offers a proportional exemption for all service-connected disability ratings from 10% to 100%. Prior law was tiered; now it scales linearly.

• 100% SC disability: full property tax exemption on primary residence — no income limit, no value cap
• Other ratings: proportional percentage exemption

Surviving spouses

Unmarried surviving spouses of disabled veterans or KIA servicemembers maintain the exemption.

Appealing Your Assessment

New Mexico appeals have a strict 30-day window.

File within 30 days of Notice of Value

The county assessor mails Notices of Value typically in April or May. File petition of protest within 30 days of the mailing date shown on the notice.

County Valuation Protests Board

Hearings are informal. Present evidence of overvaluation or incorrect classification.

District Court

Board decisions appealable to district court.

Payment Schedule

New Mexico property tax is paid in two installments:

• First half: November 10
• Second half: April 10 of following year

Frequently Asked Questions

Who qualifies for New Mexico's senior valuation freeze?

Single-family dwelling owners age 65+ or disabled, with previous year's modified gross household income of $40,400 or less (some counties use $44,200 for 2026). Property value frozen at 2001 level, year of turning 65, or year of first occupation. File annually for the first 3 years; continues automatically thereafter with no change in eligibility.

What is New Mexico Constitutional Amendment 1 (2024)?

Voter-approved amendment (November 2024) that extended proportional property tax exemption to all service-connected disabled veterans from 10% to 100% rating, effective tax year 2026. 100% SC disabled veterans receive full exemption on primary residence with no income limit or value cap. Prior law was tiered at specific thresholds; the amendment made it linear.

When is the New Mexico property tax appeal deadline?

30 days from the mailing date on your Notice of Value (typically received April or May). File a petition of protest with the county assessor, then appeal to the County Valuation Protests Board, then to district court. Missing the 30-day window forfeits appeal rights for the tax year.

How does New Mexico assess property?

At one-third (33.33%) of full value. Millage is applied to this assessed value. The senior valuation freeze locks in the value base for long-term relief; the veterans exemption reduces the taxable base proportionally by disability rating.