New Mexico Income Tax Calculator

New Mexico Income Tax: The Western Outlier With Surprising Wrinkles

Squeeze New Mexico between its neighbors on a tax map and something looks off. Arizona taxed income at 2.5% flat. Colorado and Utah both run under 4.5% flat. Texas has nothing. Against that backdrop, New Mexico’s top rate of 5.9% appears steep — until you look at what the brackets actually do to real incomes. The six-bracket structure, reshaped most recently by HB 252 in 2024 and effective January 2025, starts at just 1.5% on the first $5,500 of taxable income for single filers. Two entirely new brackets — 1.5% and 3.2% — were added at the bottom of the schedule specifically to lower the effective burden on modest earners who previously entered the system at 3.7%. Most working New Mexicans earning between $30,000 and $100,000 find themselves paying 4.7% on the majority of their income, not 5.9%. That top rate is reserved for income above $210,000 (single) or $315,000 (married filing jointly), a threshold that touches a small fraction of the state’s population.

New Mexico follows the federal standard deduction, which for 2025 is $15,750 for single filers and $31,500 for married couples filing jointly — a meaningful starting reduction that applies before any bracket rate touches your income. The state doesn’t layer on a separate state standard deduction or a personal exemption system on top, which keeps the calculation cleaner than states like Connecticut or Maryland. Where New Mexico does add its own adjustments is through Schedule PIT-ADJ: that’s where you subtract exempt military retirement pay, Social Security benefits if you qualify, retirement income if you’re 65 or older, and any other New Mexico-specific items. The interaction of these adjustments with the bracket structure is where real planning value lives. A retiree drawing military pension, Social Security below the $100,000 AGI threshold, and some KPERS-equivalent New Mexico public pension income could see their New Mexico taxable income drop to a fraction of their gross — putting them back in the 1.5% or 3.2% bracket even on substantial total income.

Three things about New Mexico’s tax code that no other state can claim: First, residents who reach the age of 100 owe zero New Mexico income tax — every dollar of their income, from any source, is completely exempt. This isn’t a deduction or a credit; it’s a full exemption written into state law. Second, New Mexico has no traditional sales tax. Instead, it levies a Gross Receipts Tax on the privilege of doing business in the state, which businesses are permitted to pass through to customers on their invoices. The combined state and local GRT rate in Albuquerque runs roughly 7.875%, in Santa Fe around 8.44%. The distinction matters because the legal incidence falls on the seller, not the buyer — which creates different exemption patterns, particularly around food and healthcare, compared with how standard retail sales taxes work. Third, military retirement pay became fully exempt from New Mexico income tax in 2022, effective immediately with no phase-in and no income cap. Kirtland Air Force Base, Holloman Air Force Base, White Sands Missile Range, and the sprawling Cannon Air Force Base make military families a significant population in New Mexico — and this exemption directly addressed a longstanding gap that had been pushing retirees toward neighboring Texas.