
Registering a car in Montana involves a visit to your local County Treasurer’s Office, which handles vehicle titles and registrations. The process is straightforward if you have the required documents ready. You'll need to provide proof of ownership, identity, and insurance, and pay the associated fees and taxes.
The most critical document is the vehicle title, properly assigned to you by the previous owner. If you have a loan on the vehicle, the lienholder will hold the title and you’ll need a photocopy. You must also show proof that Montana’s state sales tax has been paid. If the vehicle was purchased from a dealer, the tax is usually included. For private sales or out-of-state purchases, you may need to pay the tax at the time of registration.
Here’s a checklist of what to bring:
Fees vary by county and vehicle type, but generally include a registration fee, a title fee, and any applicable county option taxes. For a standard passenger vehicle, expect to pay between $50 and $150 in total fees, excluding taxes. Registration is typically valid for one year.
| Common Montana Car Registration Fees (Passenger Vehicle) | Cost |
|---|---|
| Title Fee | $10.30 |
| New Registration Fee | $8.70 |
| Annual Registration Renewal Fee | $8.70 |
| County Option Tax (Varies by county; example for a $15,000 vehicle) | ~$100 |
| Plate Transfer Fee | $5.10 |
| VIN Inspection Fee (if required) | $5 |

Just moved here? Head to the County Treasurer's office with your out-of-state title, a valid MT driver's license, and proof of insurance. They'll handle a VIN check on the spot. The main cost is the county option tax based on your car's value. It's a pretty quick process if your paperwork is in order. You'll drive out with new Montana plates.

As a long-time resident, I always remind folks that the key is calling your local County Treasurer's Office first. Some smaller counties might have specific hours for vehicle registration. Have your bill of sale ready to prove what you paid; this determines the state tax. Don't forget the insurance card—it's the one thing people often leave at home. The whole thing usually takes about 30 minutes.

The financial part is what catches people off guard. Beyond the small state fees, you pay a county tax which is a percentage of your vehicle's value. For a newer car, this can be a significant amount. If you bought the car from a private party, bring the bill of sale. The office will calculate the tax owed. Be prepared to write a check or use a card for a few hundred dollars, depending on your car.

I did most of the paperwork online beforehand, which saved a ton of time. I downloaded the Title Application form from the state's Motor Vehicle Division website and filled it out at home. When I got to the office, the line was long but I was in and out fast because I was prepared. They just needed to see the originals of my documents. Pro tip: make photocopies of everything before you go, just in case.


