Montana vehicle registration renews every year, and you can do it online, by mail, or in person at your county treasurer's office

Montana requires you to renew your vehicle registration annually. The state sends renewal notices by mail about 30 days before your registration expires — the expiration date is printed on your current registration card. You have three ways to renew: online through the Montana Department of Justice website, by mail using the renewal notice, or by visiting your county treasurer's office in person. Online renewal is the fastest option and takes about 10 minutes.

Your registration renewal is tied to your vehicle's inspection status. Montana requires a safety inspection every two years, and an emissions inspection every year in certain counties (Cascade, Deer Lodge, and Silver Bow). If your inspection is expired or missing, you cannot renew your registration online — you will need to get the inspection first, then renew.

Key Takeaways

  • Montana sends renewal notices 30 days before expiration; check your current registration card for the exact date.
  • You need a current safety inspection (every two years) and an emissions inspection (every year in three counties) before you can renew.
  • Online renewal through the Montana Department of Justice website is the fastest method and requires your registration number and driver's license number.
  • If you renew by mail, send your renewal notice with payment to your county treasurer; processing takes one to two weeks.
  • Late renewal fees explore if you drive on an expired registration, so renew before the expiration date on your card.

What documents and information you need to renew

Gather your current registration card, your vehicle's title or proof of ownership, and proof of insurance before you start. Montana requires continuous liability insurance on all registered vehicles. You will also need your driver's license number and the vehicle identification number (VIN), both of which are on your registration card.

If your vehicle's title is not in your name, or if you have a lien on the vehicle, bring documentation showing the current owner or lienholder. If you have moved since your last registration, bring proof of your current address — a utility bill, lease, or mortgage statement works. The county treasurer's office can tell you exactly what they need for your situation if you call ahead.

Renewing online through the Montana Department of Justice

Go to the Montana Department of Justice's vehicle services website and select "Renew Registration." You will enter your registration number, driver's license number, and the last four digits of your VIN. The system will pull up your current registration and show you the renewal fee, which varies based on your vehicle's age and weight.

Online renewal requires that your vehicle's inspection is current and that your address on file matches your driver's license. If either is out of date, the system will tell you and direct you to fix it before you can complete the renewal. Payment is by credit card or debit card. You will receive a temporary registration number when ready; your physical registration card arrives by mail within one to two weeks.

Renewing by mail with your renewal notice

Your renewal notice includes a payment stub and instructions for mailing. Write a check or money order for the amount shown, include your notice, and mail both to your county treasurer's office. The address is printed on the notice. Do not mail cash.

Mail renewal takes longer than online — typically one to two weeks from the time the treasurer receives your envelope. To avoid driving on an expired registration, mail your renewal at least two weeks before your expiration date. Keep a copy of your notice for your records until you receive your new registration card.

Renewing in person at your county treasurer's office

Find your county treasurer's office online by searching "[your county name] Montana treasurer." Bring your current registration card, proof of insurance, and a valid ID. If you have moved, bring proof of your current address. Payment is by cash, check, or card, depending on what your office accepts.

In-person renewal is when ready — you walk out with a temporary registration number and your new card is mailed to you. This is the best option if your inspection is expired or if you have questions about your specific vehicle. Call ahead to confirm office hours; many county offices close for lunch or have limited hours on certain days.

Vehicle inspection requirements before renewal

Montana requires a safety inspection every two years. This inspection checks your brakes, lights, windshield, wipers, and steering. You can get a safety inspection at any authorized inspection station — your mechanic, a tire shop, or a dedicated inspection station. The inspection costs between $10 and $20 and is valid for two years from the date it is performed.

If you live in Cascade, Deer Lodge, or Silver Bow County, you also need an emissions inspection every year. This test checks your vehicle's exhaust system. Emissions inspections are available at authorized stations in those counties and cost around $20. If your vehicle is newer than 1996, it may be exempt from emissions testing — the inspection station will tell you.

Late renewal fees and what happens if you drive expired

If you drive on an expired registration, you face a fine if stopped by law enforcement. Montana does not charge a separate late fee for renewing after the expiration date, but you are responsible for any traffic citations you receive while driving expired. Renew before your expiration date to avoid this risk.

If your registration has been expired for more than 30 days, some county treasurers require you to renew in person rather than online or by mail. Call your county treasurer's office to confirm their policy if your registration is significantly overdue.

Frequently Asked Questions

Can I renew my Montana registration if I live out of state?

Yes. Online renewal works from anywhere, and you can mail your renewal notice to your county treasurer from any state. If you have moved out of Montana but still own a vehicle registered here, update your address with the county treasurer before renewing so your new card reaches you.

What if my inspection expired but my registration has not?

Get the inspection done first. You cannot renew your registration online or by mail without a current inspection. Once the inspection is complete, you can renew when ready through any method. The inspection station will provide proof of inspection that you can show to the treasurer if you renew in person.

How much does Montana vehicle registration cost?

Registration fees vary based on your vehicle's age, weight, and type. The Montana Department of Justice website shows the fee for your specific vehicle when you start an online renewal. Fees typically range from $50 to $200 annually, but the exact amount depends on your vehicle's details.

Do I need to renew if I sold my vehicle?

No. When you sell a vehicle, notify your county treasurer in writing or in person to cancel the registration. Provide the buyer's name and the sale date. You are not responsible for registration after the sale is reported, even if the new owner has not registered it yet.

What if I lost my registration card?

Contact your county treasurer's office and request a duplicate. You can usually get one in person the same day, or by mail within one to two weeks. Bring your ID and proof of ownership. There is typically a small fee for a duplicate card, usually under $10.