New Mexico Capital Gains Tax Calculator
New Mexico taxes capital gains as ordinary income at the state level, which means a gain on selling shares, property or other investments is added to your other income and taxed using the New Mexico income tax brackets, with no separate preferential long-term rate like the federal system provides. This calculator estimates the New Mexico state tax on a capital gain by stacking the gain on top of your other taxable income and applying the sourced New Mexico Taxation and Revenue Department brackets for tax year 2024, then taking the difference. Enter your gain, your other annual taxable income and your filing status to see the state tax attributable to the gain and the effective rate on it. The result is the New Mexico state portion only; federal capital gains tax, which has separate short-term and long-term rates set by the IRS, is calculated separately. Because the gain stacks on your other income, the same gain is taxed at a higher rate the more you already earn. Some states provide specific exclusions or preferential treatment for certain gains; this tool uses the standard ordinary-income method and links the New Mexico Taxation and Revenue Department so you can confirm any special rule that applies to you.
New Mexico taxes capital gains as ordinary income. A $20,000.00 gain on top of $60,000.00 of other income (single) adds about $980.00 in New Mexico state tax, an effective rate on the gain of 4.90%.
How New Mexico taxes capital gains
New Mexico taxes capital gains as ordinary income, so the gain is added to your other income and taxed at the New Mexico bracket rates.
state tax on gain = state income tax on (other income + gain) - state income tax on (other income)
effective rate on gain = state tax on gain / gain x 100
New Mexico capital gains tax: frequently asked questions
How are capital gains taxed in New Mexico?
New Mexico taxes capital gains as ordinary income at the state level: the gain is added to your other taxable income and taxed using the New Mexico income tax brackets published by the New Mexico Taxation and Revenue Department. This calculator applies those brackets to your gain. Some states provide specific exclusions or rates for particular gains; confirm your situation with the New Mexico Taxation and Revenue Department.
How much state tax will I pay on a $20,000.00 capital gain in New Mexico?
Stacked on $60,000.00 of other income, a $20,000.00 gain adds about $980.00 of New Mexico state income tax for a single filer, an effective rate on the gain of 4.90%. Your figure depends on your total income and filing status; enter them above.
Does New Mexico have a separate long-term capital gains rate?
Most states, including the default treatment here, tax long-term and short-term capital gains at the same ordinary income rates, unlike the federal system which has preferential long-term rates. Any state-specific exclusion or preferential rate is set by the New Mexico Taxation and Revenue Department; this calculator uses the ordinary income method and links the source.
Is Social Security income taxed in New Mexico?
New Mexico exempts Social Security income from state income tax for taxpayers whose adjusted gross income is under $100,000 (regardless of filing status). Taxpayers with AGI at or above $100,000 may owe New Mexico income tax on their Social Security benefits. Confirm current thresholds with the New Mexico Taxation and Revenue Department.
What is New Mexico's top income tax rate?
New Mexico's top marginal income tax rate is 5.9%, which applies to taxable income over $210,000 for single filers, over $315,000 for married filing jointly and head of household, and over $157,500 for married filing separately.
Does New Mexico conform to federal tax rules?
New Mexico uses federal adjusted gross income as the starting point for calculating New Mexico taxable income and conforms to the federal standard deduction. Some modifications apply, such as the Social Security income exemption for lower-income filers.
Does New Mexico have a local income tax?
No. New Mexico does not impose local or municipal income taxes. Only the statewide graduated income tax applies.
Official sources
- New Mexico income tax rates applied to capital gains (tax year 2024): New Mexico Taxation and Revenue Department, as at Jun 12, 2026.
Reviewed by the CalculatorHub team, edited by James Graham, 25 June 2026. See our methodology. General information, not financial or tax advice. State-specific exclusions, if any, are set by the New Mexico Taxation and Revenue Department.