Montana Car Loan Laws

Montana caps dealer contracts at 36% a year, charges no sales tax on cars, and lets a lender repossess without warning once you default.

Updated Oct 26, 2026 By Lenditia Editorial Team 6-minute read No right to cure

In short

Montana's Retail Installment Sales Act lets a dealer and buyer agree on the finance charge, up to 36% a year. We found no Montana statute that caps the dealer documentary fee. There is no sales tax on a car; instead you pay a registration fee based on the vehicle's age, from $28 to $217 a year, plus any county option tax. State law gives no right to cure, so a lender can repossess after a default. The Department of Administration licenses sales finance companies.

Right to cure: None in state law
Rate ceiling: 36% a year
Doc fee limit: No cap in state law
Vehicle sales tax: None

Map of the United States with Montana highlighted

Montana car-finance rules at a glance

Montana No right to cure No general right to cure in state law Checked Oct 26, 2026

Right to cure: None in state law; the contract defines default
Rate ceiling: 36% a year on retail installment contracts, any vehicle age; MCA 31-1-241; money lent directly by banks and other lending institutions falls outside the act.
Doc fee limit: No cap in state law; No Montana statute limiting dealer documentary fees was found in the dealer licensing law (MCA Title 61, ch. 4).
After repossession: Notice before sale; you may redeem; deficiency allowed
Vehicle sales tax: None; age-based registration fee ($28 to $217) plus county option tax; Rates from the Motor Vehicle Division, October 2026, plus a 3% administrative fee.
Regulator: Department of Administration, Division of Banking and Financial Institutions

How much interest a Montana car contract can carry

The Montana Retail Installment Sales Act covers goods sold on credit, and its definition of goods names motor vehicles. Under section 31-1-241 of the Montana Code, the finance charge in a retail installment contract is whatever rate the seller and buyer agree on, but it may not exceed 36% a year. The cap has been in the statute since voters approved Initiative 164 in 2010.

One cap for every car. The 36% limit does not vary with model year or amount financed.
Banks and credit unions. The act does not cover money they lend directly, but it does apply when they buy or write retail installment contracts.
APR is the number to compare. The contract must show it under federal Truth in Lending rules.

A 36% ceiling is far above what most borrowers pay. Before you sign, check what the offered rate costs with the car payment calculator and compare it with a preapproval from a bank or credit union.

Fees and taxes on a Montana car purchase

Montana has no general sales tax, so the purchase price is not taxed. You pay registration fees instead, and the dealer may add its own documentary fee. We found no Montana law that limits that fee, so ask about it before you agree on a price.

Montana light vehicle registration rate by age, per the Motor Vehicle Division (October 2026)
Vehicle age	Registration rate
0 to 4 years	$217
5 to 10 years	$87
11 years or older	$28

The age is the year the fee is due minus the model year. A 3% administrative fee is added, and a county may charge a local option tax based on the manufacturer's suggested retail price, reduced as the car ages. Cars 11 years or older can be registered permanently while you own them.

Falling behind on a car loan in Montana

Montana law does not require a lender to send a notice of default and give you time to catch up before it takes the car. Your contract defines default. Article 9 of the Uniform Commercial Code, codified in chapter 9A of Title 30, sets out the repossession steps.

Taking the car. After default the lender may repossess without a court order if it avoids a breach of the peace (MCA 30-9A-609).
Notice before the sale. The lender must send you notice before it sells or otherwise disposes of the car (MCA 30-9A-611).
Redemption. Until the car is sold or the lender contracts to sell it, you can get it back by paying the whole debt plus reasonable expenses and attorney fees (MCA 30-9A-623).
Deficiency. If the sale brings less than you owe, the lender can seek the difference from you.

If you made a payment before you entered active military duty, federal law requires a court order before repossession. Belongings you left inside the car are not part of the collateral, so ask in writing for their return. Our guides to repossession and the balance left after a sale explain each stage.

Where to check a lender and complain

Any company that buys retail installment contracts made in Montana must hold a sales finance company license from the Department of Administration, which acts through its Division of Banking and Financial Institutions. Banks, savings associations and credit unions do not need that license but must follow the act.

Division of Banking and Financial Institutions

Licenses sales finance companies and regulates state-chartered banks and other financial institutions.

Montana Motor Vehicle Division

Handles titles and registration and publishes the current registration fees and county option tax rules.

Consumer Financial Protection Bureau

Handles complaints about any auto lender or servicer, including banks and finance companies.

Questions people ask

What is the maximum interest rate on a car loan in Montana?

A retail installment contract may carry any rate the buyer and seller agree on, up to 36% a year.

Is there sales tax on cars in Montana?

No. Montana has no general sales tax. You pay registration fees by vehicle age, plus any county option tax.

Is there a limit on dealer doc fees in Montana?

We found no Montana statute that caps the documentary fee, so compare it between dealers and count it in the total price.

Do I get a warning before repossession in Montana?

Not under state law. The lender must notify you before it sells the car. See what to do when you fall behind.

Sources

Facts on this page were checked against these sources on October 26, 2026.