New Mexico imposes a broad set of state taxes. The main New Mexico state taxes are a progressive personal income tax, a gross receipts tax that functions like a sales tax, local property taxes, a corporate income tax plus franchise fee, and excise taxes on items like fuel, cigarettes, and motor vehicles. What the state does not have is an estate tax, an inheritance tax, or a gift tax.
Personal Income Tax
Individual income is taxed on a progressive scale. Single filers start at 1.7 percent on the first $5,500 of taxable income and climb through intermediate brackets to a top rate of 5.9 percent on income above $210,000. For married couples filing jointly, the bracket thresholds roughly double, and the 5.9 percent top rate applies above $315,000.1Justia. New Mexico Code Chapter 7 Article 2 – Income Tax General Provisions
Residency decides whether you owe. You are a New Mexico resident for income tax purposes if you are domiciled in the state for the full year, or if you are physically present for 185 days or more during the tax year, even if your permanent home is somewhere else.2Legal Information Institute. New Mexico Code 3.3.1.9 – Residency The 185-day rule catches snowbirds, remote workers, and seasonal employees. Part-year presence means tax on the income earned while you were in the state.3New Mexico Taxation and Revenue Department. Income Tax and 185-day Presence
Returns are due April 15, matching the federal deadline.4NM Taxation & Revenue Department. New Mexico to Begin Accepting Electronic Income Tax Returns Miss it with a balance owed and the penalty runs 2 percent of the unpaid tax per month or fraction of a month, capped at 20 percent, with interest accruing on top.5Justia. New Mexico Code 7-1-69 – Civil Penalty for Failure to Pay Tax or File a Return
Gross Receipts Tax Instead Of A Sales Tax
New Mexico does not have a traditional sales tax. It has a gross receipts tax (GRT) that businesses owe for the privilege of doing business in the state. The tax is legally on the seller’s receipts rather than the buyer’s purchase, but businesses pass it through, and it shows up on receipts the way a sales tax would.6Justia. New Mexico Code 7-9-3.5 – Definition – Gross Receipts
The state-level GRT rate is 4.875 percent through June 30, 2026.7NM Taxation & Revenue Department. State Gross Receipts Tax Rate Schedule, Effective July 1, 2025 Through June 30, 2026 Cities, counties, and other local jurisdictions add their own increments, so the combined rate at the register typically lands between 7 and 9 percent depending on location. Albuquerque, Santa Fe, and Las Cruces all sit in the upper half of that range.8NM Taxation & Revenue Department. Gross Receipts Location Code and Tax Rate Map
One feature that surprises newcomers: the GRT applies to most services, not just physical goods. Legal advice, accounting work, construction labor, and medical services can all carry gross receipts tax.
Property Tax
Property taxes fund local school districts, county government, and emergency services. The county assessor sets market value, but only one-third of that value is taxable. A home appraised at $300,000 has a taxable value of $100,000, and the local mill rate is applied to that reduced figure.9NM Taxation & Revenue Department. Property Tax Division – Definitions Annual valuation increases on most residential property are capped at 3 percent, which blunts the effect of a hot housing market.10Justia. New Mexico Code 7-36-21.2 – Limitation on Increases in Valuation
Several exemptions reduce taxable value further. A head of family who is a New Mexico resident gets $2,000 off the taxable value of their home.11Justia. New Mexico Code 7-37-4 – Head-of-Family Exemption Eligible veterans receive a $10,000 reduction starting in 2026, with automatic annual inflation adjustments after that.12Office of the Governor of New Mexico. Governor Signs Bills Supporting New Mexico Veterans Disabled veterans get an exemption scaled to their VA disability rating; a 60 percent rating produces a 60 percent exemption, and a 100 percent rating eliminates the bill entirely.
Property tax bills come in two installments. The first is due November 10 with a grace period through December 10 before interest accrues. The second is due April 10, with interest-free payment accepted through May 10.13NM Taxation & Revenue Department. Important Dates If you believe your assessment is too high, you can protest with the county assessor within 30 days of receiving your notice of value.14Justia. New Mexico Code Chapter 7 Article 35 – Property Tax
Corporate Income And Franchise Tax
Starting in 2025, New Mexico applies a flat 5.9 percent corporate income tax to all taxable income. The old graduated structure, which taxed the first $500,000 at 4.8 percent and the rest at 5.9 percent, is gone.15Justia. New Mexico Code 7-2A-5 – Corporate Income Tax Rate Every corporation earning income from New Mexico sources now pays the same rate.
Corporations also owe a franchise tax of $50 per year for the privilege of doing business in the state.16Justia. New Mexico Code 7-2A-5.1 – Corporate Franchise Tax Amount
Credits And Exemptions That Lower Your Bill
Social Security Exemption
Most retirees pay no state income tax on their Social Security benefits. The exemption applies to single filers with adjusted gross income under $100,000, married couples filing jointly under $150,000, and married couples filing separately under $75,000.17NM Taxation & Revenue Department. Social Security Income Tax Exemption Above those thresholds, benefits are taxed at regular state rates.
Exemption For Residents 65 And Older
Residents who are 65 or older, or blind, can exempt up to $8,000 of income, but the full amount is only available at lower income levels. A single filer needs AGI of $18,000 or less to claim the entire $8,000. The exemption phases down in $1,000 steps as income rises and disappears above $28,500. For married couples filing jointly, the full exemption requires income under $30,000 and phases out above $51,000.18Justia. New Mexico Code 7-2-5.2 – Exemption – Income of Persons Sixty-Five and Older or Blind
Working Families Tax Credit
New Mexico builds on the federal Earned Income Tax Credit with a state Working Families Tax Credit. Eligible residents can claim a state credit equal to 30 percent of their federal EITC if they have a qualifying child under age six, or 20 percent otherwise.19New Mexico Legislature. New Mexico House Bill 148 The state version is also available to taxpayers who file with an Individual Taxpayer Identification Number rather than a Social Security number.
Capital Gains Deduction
Taxpayers can deduct up to $1,000 of net capital gain income from their state return.20Justia. New Mexico Code 7-2-34 – Deduction – Net Capital Gain Income
What New Mexico Doesn’t Tax
New Mexico imposes no state estate tax, inheritance tax, or gift tax. The estate tax was repealed effective July 1, 2005, and has not been reinstated.21Justia. New Mexico Code 45-3-916 – Repealed Only the federal estate tax applies, and for 2026 the federal exemption is approximately $15 million per individual, so very few New Mexico estates owe anything. Income generated by an inherited estate or trust after the owner’s death, such as rental income or investment dividends, is still subject to the state’s regular income tax.
Excise Taxes On Specific Purchases
Beyond the major categories, New Mexico charges excise taxes on particular goods:
- Buying a car triggers a 4 percent motor vehicle excise tax on the purchase price, reduced by any trade-in credit. It applies at titling and is separate from the GRT.22NM Taxation & Revenue Department. Motor Vehicle Excise Tax
- Cigarettes carry a tax of 10 cents each, which works out to $2.00 per standard 20-pack.23Justia. New Mexico Code 7-12-3 – Excise Tax on Cigarettes
- Gasoline is taxed at $0.17 per gallon.24NM Taxation & Revenue Department. Combined Fuel Tax Distribution Reports
These excise taxes are built into the price at the pump or the dealership, so they rarely appear as a separate line the way GRT does on a restaurant bill.