Bernalillo County Property Tax Guide for 55+ Buyers
The one-third assessment rule, effective rates, and senior exemptions explained
New Mexico’s property tax system is structurally different from most states — and meaningfully more favorable for buyers. The core mechanic: residential property is taxed on one-third of its appraised value, not the full value. Combined with relatively low mill rates, this produces effective property tax rates among the lowest in the Sun Belt.
The One-Third Assessment Rule
Every residential property in New Mexico is assessed at one-third (33.3%) of its market value. On a $450,000 home, the taxable assessed value is $150,000. The head-of-family exemption reduces that further by $2,000. The combined mill rate in Bernalillo County is then applied to arrive at your annual tax bill.
County-by-County Comparison
| County | Key Communities | Effective Rate (market value) | Annual Tax on $450K |
|---|---|---|---|
| Bernalillo | Mirehaven, Albuquerque | ~0.84% | ~$3,780 |
| Sandoval | Rio Rancho, Alegria, The Islands | ~0.71% | ~$3,195 |
| Valencia | Los Lunas, Jubilee | ~0.56% | ~$2,520 |
Senior Property Tax Freeze (Income-Tested)
New Mexico offers an assessed value freeze for homeowners 65 or older whose Modified Adjusted Gross Income is below approximately $42,900 (2025 figure). If you qualify, your home’s assessed value is frozen at its current level — future appraisal increases do not increase your tax base. This is income-tested, unlike Texas’s no-income-test freeze. Most Mirehaven buyers will not qualify given the income levels required to purchase at $400K+, but it is available for Jubilee Los Lunas or Islands buyers at lower income levels.
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