New Mexico capital gains tax calculator
New Mexico taxes capital gains on top of federal tax: up to 5.9% (ordinary income rates).
Calculate my New Mexico taxYour details
Your tax estimate
| Capital gain | $50,000 |
| Federal long-term rate | 15.0% |
| Federal CGT | $7,500 |
| Total federal tax | $7,500 |
| New Mexico (5.9%) | $2,950 |
| Total tax | $10,450 |
| Net gain after tax | $39,550 |
What you would pay in New Mexico
Long-term gains (assets held more than a year) for a single filer with $75,000 of other income:
| Gain | Federal + NIIT | New Mexico | Total tax | You keep |
|---|---|---|---|---|
| $25,000 | $3,750 | $1,475 | $5,225 (20.9%) | $19,775 |
| $50,000 | $7,500 | $2,950 | $10,450 (20.9%) | $39,550 |
| $100,000 | $15,000 | $5,900 | $20,900 (20.9%) | $79,100 |
| $250,000 | $42,250 | $14,750 | $57,000 (22.8%) | $193,000 |
Short-term vs long-term gains in New Mexico
Sell within a year and the federal government taxes the gain as ordinary income. On a $50,000 gain with the same income, that means $14,014 of tax if you sell short-term against $10,450 if you hold past one year, a difference of $3,564.
How we estimate New Mexico tax
Up to 5.9% (ordinary income rates). Where a state taxes gains as ordinary income on a sliding scale, the calculator applies the rate shown above to the whole gain, so for most people it is an upper estimate. Local and city income taxes are not included.
*Examples use 2026 IRS brackets, the standard deduction and the 3.8% Net Investment Income Tax. Change your filing status, income and holding period in the calculator above for your own figure.
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