State rules
Montana auto loan rules
Montana has 128 Census places covered on AutoLoanable, with a combined estimated population of 618,302. Vehicle financing in Montana 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 Montana
| Rule | Detail | Source |
|---|---|---|
| Maximum legal interest rate (usury cap) | Greater of 15% or prime rate + 6 percentage points per year (written agreement); regulated lenders exempt Source says: "Parties may agree in writing to the payment of any rate of interest that does not exceed the greater of 15%" |
Montana Legislative Services Division (Montana Code Annotated) as of 2026-09-17 |
| Vehicle title loan status | The separate Montana Title Loan Act was repealed effective Dec. 31, 2013; vehicle-title-secured loans fall under the Montana Consumer Loan Act, where interest is capped at 36% per year. Source says: "The interest, excluding the fees authorized in subsections (3) and (4), may not exceed 36% a year." License category: Consumer loan license (Montana Division of Banking and Financial Institutions). |
Montana Legislature — MCA § 32-5-301 as of 2026-09-17 |
| Sales finance / installment lender licensing | Consumer loan license required under the Montana Consumer Loan Act (32-5-101); licensing through NMLS Source says: "A consumer loan license is needed to engage in business as defined in the Montana Consumer Loan Act" Motor-vehicle retail installment sales are separately governed by the Montana Retail Installment Sales Act (Mont. Code Ann. §§ 31-1-201 to 31-1-243). |
Montana Department of Administration, Division of Banking and Financial Institutions as of 2026-09-17 |
| State lending regulator | Montana Division of Banking and Financial Institutions (BFID), Department of Administration Source says: "The Montana Division of Banking and Financial Institutions (Division) does all of its licensing through the Nationwide Multistate Licensing System (NMLS)." |
Montana Department of Administration, Division of Banking and Financial Institutions as of 2026-09-17 |
| Sales tax on vehicle purchases | No state sales tax Source says: "Montana does not have a general-use sales tax." |
Montana Department of Revenue 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 Montana 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 Montana
We cover 128 Census places in Montana.