Rental Property Taxes in New Mexico (2026 Guide)

1. Property Tax: a 3% Cap and the GRT Trap

New Mexico has one of the lowest effective property tax rates in the country — roughly 0.7% of value, against a national average near 1.1%. Two features make it landlord-friendly:

One assessment ratio for everyone. All property is assessed at one-third of market value (NMSA 7-36-15). There is no owner-occupied-vs-rental rate split — unlike states that punish rentals with a higher ratio.
The 3% valuation cap. A residential property's taxable value can rise no more than ~3% a year (NMSA 7-36-21.2), and that cap protects held rentals year after year, not just owner-occupants. It resets to full market value on a change of ownership — so the buyer of your rental starts fresh at the sale price.
Head-of-family exemption is owner-only. The $2,000 taxable-value exemption (NMSA 7-37-4) requires the property be owned by a NM-resident head of family — it is not available on an investment rental that is not your residence.

The GRT trap: New Mexico taxes most business receipts under its gross receipts tax (GRT). Long-term residential rent is EXEMPT — a lease of real property as a residence for 30 days or more is deductible from GRT (NMSA 7-9-53; NMAC 3.2.211). But a SHORT-TERM rental (under 30 days) does not qualify: it owes GRT on the rent PLUS local Lodgers' Tax (Lodgers' Tax Act, NMSA 3-38-13 et seq.; the 30-day exemption is at 3-38-16). If you run an Airbnb-style stay, budget for both; if you do standard 30-day-plus leases, your rent is GRT-free.

2. Income Tax (1.5%-5.9%, from Federal AGI)

New Mexico has a graduated income tax of 1.5% to 5.9% (top rate 5.9%), using the HB 252 bracket schedule effective for tax year 2025 (NMSA 7-2-7). The tax is computed from a federal adjusted gross income (AGI) base (NMSA 7-2-2), so your rental net income flows up from the federal Schedule E. SheltrIQ's engine computes the exact liability.

HB 252 (signed 2024) rebuilt the brackets effective 2025: it lowered the bottom rate to 1.5%, kept the top at 5.9%, and split the schedule into six brackets. Make sure 2026 planning uses the current schedule, not the pre-2025 0/3/6-style figures floating around online.

3. The Capital-Gains Deduction (Changed for 2025)

New Mexico has long offered a net-capital-gains deduction, but HB 252 narrowed it effective tax year 2025 (NMSA 7-2-34). The deduction is now the greater of:

$2,500 of net capital gain income (a flat amount, up from the old $1,000), or
40% of up to $1,000,000 of net capital gain — but only gain from the sale of a business allocated or apportioned to New Mexico.

Watch this if you sell a rental. Before 2025, the 40% option applied to all net capital gain, including a rental-property sale. After HB 252, the 40% break is restricted to the sale of a BUSINESS — so a plain sale of investment real estate generally qualifies only for the flat $2,500 deduction, with the rest of the gain fully taxed at NM rates. SheltrIQ applies the current 2025+ rule, not the older, more generous version still quoted on many sites.

4. Bonus Depreciation (Conforms Through 2026)

Because New Mexico individuals start from federal AGI (NMSA 7-2-2), the state conforms to federal bonus depreciation under IRC §168(k) for individual filers — for 2026 there is no separate NM add-back, so your federal bonus deduction carries straight into the NM base. Note that SB 151 (enacted 2026) begins decoupling from §168(k) for corporate tax years starting in 2027; an individual landlord's conformity is unaffected for 2026, but keep an eye on the 2027 rules if you hold rentals in a C-corp.

5. No Real-Estate Transfer Tax

New Mexico imposes no real-estate transfer (deed) tax — there is no state transfer tax, and no New Mexico county or municipality imposes one. Selling or buying a rental costs only the nominal county-clerk recording fees, with no percentage-of-price tax on the conveyance. That is a real saving versus the many states that take a cut of every sale.

6. LLC Fees ($0 Annually)

A New Mexico LLC has no annual report and no annual fee to the Secretary of State — only a one-time formation filing (about $50) and an ongoing registered agent. That makes New Mexico one of the cheapest states in the country to hold rentals in an LLC: once formed, the recurring state cost is $0. (The exception is the usual one — an LLC that elects corporate tax treatment files like a corporation.)

7. Rent Control

New Mexico prohibits local rent control statewide (NMSA 47-8A-1) — no county, municipality, or other political subdivision may enact an ordinance that controls the rent on privately owned property. You set rents at market. (A 2025 repeal bill, SB 216, did not pass; the preemption remains in force.)

8. Security Deposit Rules

Cap for leases under one year — one month's rent. If the rental agreement is for less than a year, the deposit may not exceed one month's rent (NMSA 47-8-18).
Leases of one year or more — no dollar cap, but interest applies. You may take a larger deposit, but if it exceeds one month's rent you must pay the resident annual interest at the prescribed passbook rate (NMSA 47-8-18).
Return within 30 days. Within 30 days of the tenancy ending, return the deposit with a written itemized statement of any deductions. Miss the deadline and you forfeit the right to withhold and may owe the resident's court costs and attorney's fees. No deposit may be kept for normal wear and tear.

9. How SheltrIQ Helps New Mexico Landlords

New Mexico's 2025 reforms changed the math — SheltrIQ keeps your return on the current rules:

Current income modeling — applies the HB 252 1.5%-5.9% schedule from a federal-AGI base, not the stale pre-2025 figures.
Disposition modeling — applies the narrowed 2025+ capital-gains deduction (flat $2,500 on a typical rental sale, the 40% break only on a business sale) so a sale is taxed correctly.
GRT awareness — distinguishes GRT-exempt long-term rent from short-term lodging that owes GRT plus Lodgers' Tax, so you do not under- or over-collect.
AI Schedule E classification — sorts each expense to the right line so your NM income starts from an accurate federal return.

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