State rules
New Mexico auto loan rules
New Mexico has 105 Census places covered on AutoLoanable, with a combined estimated population of 1,428,968. Vehicle financing in New Mexico is governed by state law — the interest-rate caps, title-lending rules, sales-finance licensing and the regulator that oversees them. The sourced figures below apply to every car loan made to a borrower in the state.
The lowest rates are only available to the most qualified applicants.
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Key rules for car buyers in New Mexico
| Rule | Detail | Source |
|---|---|---|
| Maximum legal interest rate (usury cap) | 15% annually absent a written contract fixing a different rate (NMSA 1978, 56-8-3) Source says: "The rate of interest, in the absence of a written contract fixing a different rate, shall be not more than fifteen percent annually" |
New Mexico Compilation Commission (NMOneSource, official NMSA) as of 2026-09-17 |
| Vehicle title loan status | No separate title-loan statute or license; a loan of $10,000 or less secured by a vehicle title must be made under the Small Loan Act (or Bank Installment Loan Act), where the APR cannot exceed 36% and the loan must run at least 120 days with at least four installments. Source says: "The NM-APR for a loan in an amount of more than $500 and up to $10,000 made pursuant to the Small Loan Act of 1955 or the Bank Installment Loan Act of 1959 cannot exceed thirty-six percent." License category: none (no title-loan license; small loan company license under the New Mexico Small Loan Act of 1955). |
New Mexico Regulation & Licensing Department, Financial Institutions Division as of 2026-09-17 |
| Sales finance / installment lender licensing | Lenders making Bank Installment Loan Act loans (other than federally insured depositories) must be licensed under the Small Loan Act (2022 requirement) Source says: "a new requirement for lenders making loans under the BILA (other than a federally insured depository institution) to be licensed under the SLA" Motor-vehicle retail installment sales are separately governed by the Motor Vehicle Sales Finance Act (NMSA 1978, §§ 58-19-1 et seq.). |
New Mexico Legislature (Legislative Finance Committee fiscal impact report) as of 2026-09-17 |
| State lending regulator | New Mexico Financial Institutions Division (FID), Regulation and Licensing Department Source says: "We regulate a variety of financial institutions operating in New Mexico including:" |
New Mexico Regulation and Licensing Department, Financial Institutions Division as of 2026-09-17 |
| Sales tax on vehicle purchases | 4% motor vehicle excise tax on the price paid less trade-in credit (vehicle purchases are subject to MVET rather than gross receipts tax) Source says: "The tax is 4% of the price paid for the vehicle less any trade-in credit." |
New Mexico Taxation and Revenue Department as of 2026-09-17 |
How to use these rules
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Check the ceiling before you compare offers
If a quoted APR looks extreme, compare it against the New Mexico cap above — and note that a specific statutory exemption can apply to a particular product.
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Verify the lender is licensed
Use the regulator named in the table to confirm the lender or sales-finance company may legally serve borrowers in the state.
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Know what is secured against your car
A vehicle title loan is secured by the car itself. If the state permits it, understand the repossession terms before you sign anything.
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Budget for tax and fees separately
Sales tax and title fees are financed along with the car, so they raise the amount you borrow — and therefore the interest you pay on them.
Cities in New Mexico
We cover 105 Census places in New Mexico.