Montana vehicle registration renews every two years, and you can renew by mail, online, or in person at your county treasurer's office

Montana issues registration certificates that expire on the last day of the month shown on your current registration. You will receive a renewal notice in the mail about 30 days before expiration. The notice includes the renewal fee amount, which varies based on your vehicle's age and type. You can 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.

The state does not require a vehicle inspection for registration renewal unless your vehicle is over 10 years old and you are registering it for the first time in Montana, or if you are transferring registration from another state. If you let your registration expire, you cannot legally drive the vehicle on public roads, and you may face a fine if stopped by law enforcement.

Key Takeaways

  • Montana registration renews every two years, and you will receive a renewal notice by mail about 30 days before your certificate expires.
  • You can renew online at the Montana Department of Justice website, by mail using your renewal notice, or in person at your county treasurer's office.
  • The renewal fee depends on your vehicle's age and type, and the exact amount is listed on your renewal notice.
  • Montana does not require a vehicle inspection for renewal unless your vehicle is over 10 years old and you are registering it in the state for the first time.
  • Driving with an expired registration can result in a fine, so renew before the expiration date on your current certificate.

Renewing online through the Montana Department of Justice

The Montana Department of Justice website allows you to renew your registration without visiting an office. You will need your current registration certificate, your renewal notice, and a payment method. The online system accepts credit cards and debit cards. Once you submit your renewal and payment, you will receive a temporary registration document that you can print or display on your phone while you wait for your new certificate to arrive by mail.

The new certificate typically arrives within 7 to 10 business days. If you need to drive before it arrives, the temporary document is valid for 30 days. You should keep your old certificate until the new one arrives, in case you are stopped by law enforcement and need to show proof of renewal.

Renewing by mail with your renewal notice

Your renewal notice includes instructions for mailing your payment and completed form to the Montana Department of Justice. You will need to include the renewal notice itself, a check or money order for the renewal fee, and your current registration certificate. Mail your packet to the address listed on the renewal notice. Do not send cash through the mail.

Processing by mail takes longer than online renewal — typically 2 to 3 weeks from the time the department receives your packet. To avoid late fees, mail your renewal at least two weeks before your registration expires. Keep a copy of everything you send, or take a photo of your completed form and check before mailing, in case there are questions about your renewal.

Renewing in person at your county treasurer's office

Every Montana county has a treasurer's office that handles vehicle registration. You can visit in person with your renewal notice, current registration certificate, and payment. The office will process your renewal when ready, and you will receive your new certificate on the spot. This is the fastest way to renew if you need your new certificate the same day.

County treasurer offices have different hours and locations. Search online for your county treasurer's office to find the address, phone number, and hours. Some offices are open only certain days of the week, so call ahead or check their website before you go. Bring a valid ID and your renewal notice to speed up the process.

What to do if your registration has already expired

If you did not renew before the expiration date, you can still renew using any of the three methods above. However, you may owe a late fee in addition to the standard renewal fee. The late fee amount depends on how long your registration has been expired. Montana law allows a grace period of up to 30 days after expiration before a fine can be issued, but you should not rely on this — renew as soon as you realize your certificate has expired.

If you are stopped by law enforcement while your registration is expired, you may receive a citation. Renewing when ready after receiving a citation does not automatically dismiss the ticket, but it shows the officer and the court that you took action. If you have questions about a citation, contact the court in the county where you received it.

Renewal fees and what affects the cost

Montana registration fees are based on your vehicle's age, type, and weight. A newer passenger car costs less to renew than an older truck or commercial vehicle. Your renewal notice shows the exact fee you owe. If you have made changes to your vehicle — such as adding a trailer or changing the vehicle's use from personal to commercial — the fee may be different from your last renewal.

Some vehicles may have access to for reduced fees. Vehicles registered as historic or antique, or vehicles owned by disabled veterans, may have lower renewal costs. If you believe your vehicle qualifies for a reduced fee, contact your county treasurer's office before renewing to confirm your may be able to access and the correct fee amount.

Transferring or changing your registration at renewal time

If you have sold your vehicle or bought a new one, you cannot straightforward renew your old registration. You will need to complete a title transfer or register the new vehicle separately. These transactions are different from renewal and require additional documents, such as a bill of sale or proof of ownership. Contact your county treasurer's office for the specific forms and steps needed for a transfer or new registration.

If you are moving to a different county within Montana, you do not need to re-register your vehicle — your registration remains valid. However, if you are moving out of Montana, you will need to register your vehicle in your new state and cancel your Montana registration. Contact the Montana Department of Justice for instructions on canceling your registration.

Frequently Asked Questions

What happens if I renew my registration late?

You will owe a late fee in addition to the standard renewal fee. The amount depends on how many days past the expiration date you renew. Montana allows a 30-day grace period before law enforcement can issue a fine, but you should renew as soon as possible to avoid accumulating additional fees.

Can I renew my registration if my vehicle has a lien on it?

Yes, you can renew your registration even if a lender holds the title. The lien does not prevent renewal. However, if you are selling the vehicle, the lender must sign off on the title transfer before the new owner can register it.

Do I need to renew my registration if I do not drive my vehicle?

If your vehicle is parked and not driven on public roads, you can request a non-operational registration status from your county treasurer's office. This costs less than a standard renewal and allows you to keep your registration current without paying the full fee. When you want to drive the vehicle again, you can convert it back to operational status.

What if I lose my renewal notice before I renew?

You can still renew without the notice. Contact your county treasurer's office or the Montana Department of Justice with your vehicle identification number (VIN) and current registration number, and they will provide you with the renewal fee amount. You can then renew online, by mail, or in person using that information.

How long is my temporary registration valid while I wait for my new certificate?

If you renew online, your temporary registration is valid for 30 days. This gives you time to receive your new certificate by mail. If your new certificate does not arrive within 10 business days, contact the Montana Department of Justice to check the status of your renewal.