New Mexico has a graduated income tax with rates from 1.7% to 5.9%. New Mexico taxes Social Security income for higher earners — it provides an exemption only for lower-income individuals. New Mexico does not tax military retirement income. Moving to Texas (no state income tax) from New Mexico saves the 5.9% top rate on high incomes. New Mexico has a unique Gross Receipts Tax (GRT) instead of a traditional sales tax, and relatively low property taxes.
At a glance
Key Facts
New Mexico Income Tax
1.7% on first $5,500 (single); 3.2% on $5,501–$11,000; 4.7% on $11,001–$16,000; 4.9% on $16,001–$210,000; 5.9% above $210,000 (single). MFJ brackets at approximately double the single amounts.
Social Security Exemption
New Mexico provides a Social Security exemption for lower incomes: 100% exempt for income below $100,000 (single) / $150,000 (MFJ). Phased out above those thresholds — higher earners pay NM tax on SS income.
Military Retirement
New Mexico fully exempts military retirement income from state income tax — a significant benefit for the large military retiree population near Kirtland AFB, White Sands, and Cannon AFB.
Gross Receipts Tax (GRT)
New Mexico has a Gross Receipts Tax (GRT) at the business level rather than a retail sales tax. Effectively functions like a sales tax for consumers: combined state + municipal GRT rates range from 5.125% to 9.3625% depending on location.
No Estate or Inheritance Tax
New Mexico has no estate tax and no inheritance tax.
Property Tax
New Mexico property tax effective rate approximately 0.75% — one of the lower rates in the Southwest. Homestead exemption: $2,000 off assessed value for primary residences.
Introduction
New Mexico is a moderate-tax state that sits at the crossroads of the Southwest's low-tax states (Texas, Nevada) and higher-tax Mountain West states (Colorado). New Mexico's income tax ranges from 1.7% to 5.9%, with Social Security partially taxed for higher incomes and modest retirement income exemptions. The state's unique Gross Receipts Tax (GRT) affects businesses and some consumers differently from traditional sales taxes. This guide explains New Mexico's tax structure and what departing residents need to know.
Section 01
New Mexico Tax Structure
New Mexico's income tax is graduated with a meaningful top rate for high earners:
Income Tax Brackets (Single, 2024)
New Mexico Taxable Income (Single)
Rate
$0 – $5,500
1.7%
$5,501 – $11,000
3.2%
$11,001 – $16,000
4.7%
$16,001 – $210,000
4.9%
Above $210,000
5.9%
Most New Mexico earners — those making $16,000–$210,000 — pay primarily at the 4.9% rate. The 5.9% rate only applies to the portion above $210,000, making it a modest surcharge on very high incomes.
Social Security: Partial Exemption
New Mexico's Social Security treatment is moderate: incomes below $100,000 (single) / $150,000 (MFJ) get a 100% SS exemption. Above those thresholds, the exemption phases out. For most New Mexico retirees with modest income, Social Security is fully exempt — making NM's treatment better than Kansas (which taxes all SS) but less generous than states with no SS tax at any income level.
Texas Comparison for New Mexicans
New Mexico shares a long border with Texas, and many New Mexicans — particularly in the Las Cruces metro area near El Paso — live close to the Texas border. For New Mexico residents earning $200,000:
New Mexico income tax: approximately $9,200 (4.9% × most of the income)
Texas income tax: $0
Annual savings by moving to Texas: ~$9,200 at $200K income
The savings become more significant at higher income levels (5.9% rate above $210K) and for capital gains events.
Section 02
New Mexico Residency Rules and Departure
New Mexico uses domicile-based residency:
New Mexico Residency
New Mexico defines a resident as someone domiciled in New Mexico OR someone who maintains a permanent place of abode in New Mexico and spends more than 185 days in the state. The 185-day test is a second path to residency beyond domicile — residents who want to depart should ensure they spend fewer than 185 days in New Mexico in the departure year AND change their domicile to another state. The standard departure evidence applies: change driver's license, voter registration, vehicle registration, and primary banking relationships.
Military Retirees: Key Consideration
New Mexico's military retirement income exemption means many military retirees pay very little New Mexico income tax (military pension exempt + SS exempt = effectively $0 state tax on most military retirement income). For military retirees, the financial motivation to leave New Mexico is reduced compared to civilian retirees. New Mexico's relatively low property tax and warm climate make it popular with military retirees from nearby installations.
New Mexico domicile changes, partial-year returns, and military retirement tax planning require CPA guidance. TaxHub connects you with state tax specialists.
⚠ Not for simple single-state returns. Free filing is fine for straightforward W-2 situations.
New Mexicans moving abroad face state residency termination and US expat filing requirements. Greenback specialises in US expat state tax exit planning.
⚠ Not the cheapest option — best for complex situations and expats who want a dedicated CPA.
New Mexico does not have a traditional retail sales tax. Instead, it has a Gross Receipts Tax (GRT) that is levied on the seller's gross receipts from selling goods and services. The GRT is typically passed through to consumers — functionally similar to a sales tax from a consumer's perspective. The combined state + municipal GRT rate varies by location: Albuquerque: approximately 7.875%; Santa Fe: approximately 8.4375%; Las Cruces: approximately 8.3125%. The GRT applies to more transactions than typical sales taxes (including many services), and the rate can be higher than neighboring states' sales taxes. Businesses operating in New Mexico must file GRT returns.
Q
Is New Mexico a good state for federal government employees?
New Mexico has a significant federal government presence (Los Alamos National Laboratory, Sandia National Laboratories, White Sands Missile Range, Kirtland AFB, Cannon AFB, Holloman AFB) and many federal retirees. New Mexico does NOT have a specific federal civil service pension exemption — federal civilian retirement (CSRS/FERS) is taxable at New Mexico's regular rates (4.9% for most). Military retirement is fully exempt. For federal retirees comparing New Mexico to Texas: federal civilian pension income is tax-free in Texas but taxed at 4.9% in New Mexico — a meaningful difference for retirees drawing substantial CSRS/FERS pensions.
Q
How does New Mexico compare to Colorado for retirees?
Colorado and New Mexico comparison: Colorado has a 4.4% flat rate vs New Mexico's 4.9% rate (for most income) — Colorado is slightly better for working-age residents. For retirees: Colorado allows a $24,000 pension deduction for ages 65+ (reducing taxable income); New Mexico exempts military retirement (fully) and Social Security below $100K threshold. A retired federal civilian in Colorado might pay 4.4% on pension income above $24K (the exemption); in New Mexico the same person pays 4.9% on the full federal pension. Colorado wins for federal civilian retirees; New Mexico wins for military retirees. Both are significantly better than California, but Texas or Nevada remain the superior destinations for pure income tax optimization.
Disclaimer:This guide provides general tax information for educational purposes only. New Mexico income tax rates and Social Security exemption rules are subject to legislative change. This is not tax advice. Consult a CPA for New Mexico-specific tax planning.