New Mexico Capital Gains Tax 2026: Graduated income tax (top rate up to 5.9%)

New Mexico capital gains are modeled as Graduated income tax (top rate up to 5.9%). Use this free calculator to estimate capital gains tax in New Mexico, including federal rates, NIIT when applicable, and New Mexico's state treatment (graduated income tax (top rate up to 5.9%)).

State treatment: Graduated income tax (top rate up to 5.9%)·Official source ↗

Rates last verified: August 2026

Capital Gains Calculator

Federal · NIIT · All 50 states

2026 ratesIRS verified

Follow the three steps, save the sale, then calculate. Required fields are marked with *.

Your tax profile

These apply to every sale in this estimate.

Tax year

Filing status

State

Annual taxable income (before these gains)

Capital loss carried from prior years

What you sold

Prices and quantity for this lot. Give it a name if you will add more than one sale.

Asset type

Asset name

Buy price

Sell price

Quantity / units

Selling expenses

Repurchased within 30 days (wash-sale check)

When you bought and sold

The IRS uses these dates to decide short-term vs long-term rates.

Buy date

Sell date

Next: Save this sale to the order log, then click Calculate now. Tax results do not update until you calculate.

Order log

Sales included in this tax estimate.

Please fill in the details to see your results. Follow the three steps on the left, then save a sale here.

New Mexico capital gains tax overview

New Mexico capital gains tax planning starts with the federal rules, then layers on New Mexico's own treatment (graduated income tax (top rate up to 5.9%)). This calculator estimates both so you can see a combined effective rate before you sell stocks, crypto, real estate, or other capital assets.

Federally, short-term gains (held one year or less) are taxed as ordinary income, while long-term gains generally use 0%, 15%, or 20% preferential rates for tax years 2025 and 2026. High earners may also owe the 3.8% Net Investment Income Tax when MAGI exceeds the IRS threshold for their filing status.

New Mexico generally taxes capital gains under its graduated income-tax framework. For planning estimates we apply New Mexico's top modeled rate (graduated income tax (top rate up to 5.9%)) to taxable gains. Your actual marginal state rate may be lower depending on total New Mexico taxable income.

New Mexico figures in this model are drawn from the official source we cite for the state: https://www.tax.newmexico.gov/. Confirm the current-year statute or agency page before you file — rates and special rules can change.

New Mexico is modeled as graduated income tax with a top rate up to 5.9% on taxable capital gain. The tables use that top rate.

A taxpayer below New Mexico’s top bracket can owe less than 5.9% of the gain. The calculator does not look up the full New Mexico bracket table. It applies the encoded top rate for planning.

Rates last verified: August 2026. Official source: https://www.tax.newmexico.gov/.

Use the calculator above with filing status and income to stack federal long-term or short-term tax, NIIT, and New Mexico state tax. Compare nearby states from the links below, review our methodology for data sources (including New Mexico's official reference), and consult a CPA before filing. This page is educational and not tax advice.

New Mexico rate snapshot

Category	graduated
Summary	Graduated income tax (top rate up to 5.9%)
Abbreviation	NM
Top / modeled rate	5.90%

Illustrated tax on a long-term gain

Long-term stock gain while living in New Mexico. Federal and NIIT use the same income on every state page. The New Mexico column is the only state tax that changes.

Gain	Federal	NIIT	New Mexico	Texas state tax
$50,000.00	$7,500.00	$0.00	$2,950.00	$0.00
$100,000.00	$15,000.00	$0.00	$5,900.00	$0.00
$250,000.00	$37,500.00	$4,940.00	$14,750.00	$0.00

Single filer, tax year 2026, $80,000.00 of other taxable income. Texas is the no-tax comparison. Illustration only, not your return.

Always verify rates with theNew Mexico revenue agencyand review ourmethodology. Not tax advice.

Estimate New Mexico tax by asset

Estimate New Mexico tax on stocks, crypto, real estate, collectibles, and QSBS.

New Mexico stocks tax calculator

FAQ

New Mexico FAQs

How does New Mexico tax capital gains?

New Mexico generally taxes capital gains under its graduated income-tax framework (Graduated income tax (top rate up to 5.9%)). For planning we apply the top modeled rate to taxable gains; your actual New Mexico marginal rate may be lower depending on total taxable income.

Is the New Mexico amount on this calculator exact?

No. Graduated states are estimated at the top modeled rate, not a full multi-bracket state return. Federal tax and NIIT are stacked separately. Federal short-term and long-term capital gains tax, and the 3.8% Net Investment Income Tax when MAGI exceeds the IRS threshold, can still apply.

Where do New Mexico rates come from?

Our model cites https://www.tax.newmexico.gov/. Use this page for a combined federal-plus-state planning estimate, then confirm with New Mexico instructions or a CPA.

Are New Mexico capital gains sourced by residency or by where the asset sits?

New Mexico generally taxes residents on worldwide income, including capital gains, under its graduated framework (Graduated income tax (top rate up to 5.9%)). Nonresidents may still owe New Mexico tax on certain sourced assets such as in-state real property. This page assumes New Mexico residency for the state line.

Is 5.9% New Mexico’s tax on the entire gain?

It is the top modeled rate, up to 5.9%. The tool applies that ceiling rather than walking every New Mexico bracket.

Does New Mexico copy the federal long-term 15% rate?

No. Federal 15% is a separate layer. New Mexico’s model stays on its graduated scale, top rate up to 5.9%.

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