New Mexico Capital Gains Tax (2026)
New Mexico capital gains tax rate: Taxed as ordinary income at up to 5.9%; 40% deduction available
New Mexico provides a capital gains deduction equal to 40% of net capital gains, reducing the effective state rate to approximately 3.54% on qualifying gains. This makes NM more competitive on capital gains than its nominal rate suggests.
Federal Capital Gains Rates Still Apply to New Mexico Residents
All New Mexico residents also owe federal capital gains tax. Federal long-term capital gains rates are 0% (income up to ~$47,025 single), 15% (income up to ~$518,900 single), or 20% (above). High earners may also owe the 3.8% Net Investment Income Tax (NIIT).
Short-Term vs. Long-Term Capital Gains in New Mexico
Assets held less than one year are taxed as ordinary income at federal rates (10%–37%). Assets held over one year qualify for the preferential 0%/15%/20% federal rates. New Mexico provides a capital gains deduction equal to 40% of net capital gains, reducing the effective state rate to approximately 3.54% on qualifying gains. This makes NM more competitive on capital gains than its nominal rate suggests.
Planning Considerations for New Mexico Investors
- Tax-loss harvesting can offset gains at both state and federal levels
- Timing asset sales to control income year and bracket placement
- New Mexico taxes capital gains at Taxed as ordinary income at up to 5.9%; 40% deduction available — factor this into net-of-tax return calculations
- Qualified Opportunity Zone investments can defer federal and potentially state gains
Frequently Asked Questions
What is the capital gains tax rate in New Mexico?
New Mexico provides a capital gains deduction equal to 40% of net capital gains, reducing the effective state rate to approximately 3.54% on qualifying gains. This makes NM more competitive on capital gains than its nominal rate suggests. Federal rates (0%, 15%, 20% for long-term gains) also apply regardless of state.
Does New Mexico have a different rate for long-term vs. short-term capital gains?
New Mexico does not distinguish between short- and long-term capital gains — both are taxed as ordinary income at up to 5.9%. Only federal law provides preferential long-term capital gains rates.
How do I reduce capital gains tax in New Mexico?
Strategies include: holding assets over one year for federal long-term rates, tax-loss harvesting to offset gains, contributing to retirement accounts (401k, IRA), investing in Qualified Opportunity Zones, and timing sales across tax years. In New Mexico, capital gains are taxed at up to Taxed as ordinary income at up to 5.9%; 40% deduction available, so these strategies reduce both federal and state tax.
Is this capital gains tax calculator free for New Mexico?
Yes. Enter your gain amount, holding period, and annual income. The calculator applies both federal rates (0%/15%/20% long-term) and New Mexico's Taxed as ordinary income at up to 5.9%; 40% deduction available state rate to estimate your total tax owed.