Renewing Your Montana Vehicle Registration

By Javier Marín, Editor·Last reviewed September 2026·How we check this

Montana vehicle registration is processed through the county treasurer's office, not the state MVD. Standard registrations expire annually and renew on the owner's birth month. Vehicles 11 years or older can take advantage of Montana's unique permanent registration option, which pays a one-time fee and never needs renewing again. Most county treasurers offer online renewal portals; in-person renewals are walk-in friendly across the state.

When to renew

Standard Montana registration expires on the last day of the registered owner's birth month. The state allows renewal up to 3 months before expiration. Driving with expired tags past the grace period is a citable offense; the fine is roughly $130 plus court costs. The county treasurer mails a courtesy renewal notice 60 days before expiration, but the vehicle owner is responsible for renewing on time regardless of whether the notice arrives.

Online renewal

Most Montana counties offer an online renewal portal through the county treasurer's website. Eligibility requires:

Your registration is not expired by more than 1 year.
The vehicle is a standard passenger vehicle, light truck, motorcycle, or trailer.
Your address on file is current — if it has changed, complete an address change first.
You hold valid liability insurance meeting the 25/50/20 minimum.
You're not adding or transferring plates as part of the renewal.
The vehicle has no holds for unpaid parking citations, insurance lapses, or county tax issues.

The renewal fee is paid by credit or debit card. The new registration card and decals are mailed in 7-10 business days; you'll receive a printable receipt that serves as temporary proof of registration.

In-person renewal at the county treasurer

Visit your county treasurer's office for in-person renewal — particularly useful if you're transferring plates between vehicles, adding a lien release, or correcting registration data. Bring the renewal notice (or VIN), your existing registration, proof of insurance, and the renewal fee. The clerk processes the transaction and issues new decals and a registration card on the spot.

Permanent registration as an alternative

For vehicles 11 years and older, Montana's permanent registration option pays a one-time fee — about $87.50 for passenger cars — and registers the vehicle indefinitely. The plates stay valid as long as the same owner holds the vehicle, and there's no annual renewal. The option is unique to Montana and saves substantial money over the lifetime of an older car. To convert from annual registration to permanent registration, visit your county treasurer's office with the existing registration and pay the one-time fee. The new permanent plates issue at the same visit.

Permanent registration covers everything that annual registration covers: title, plates, and the license fee in lieu of property tax. The owner still must update their address if they move, and must transfer the registration if they sell.

The renewal fee structure

Montana's annual registration fee depends on vehicle class and age. For passenger cars:

1-4 years old: approximately $217.
5-10 years old: approximately $87.
11+ years old: approximately $28 annually, or one-time permanent registration of $87.50.

The fees include the license fee in lieu of property tax (which is what makes the Montana fee comparable to property-tax states). Trucks, motorcycles, trailers, and other vehicle classes have their own fee schedules — see our other vehicle registrations page.

No safety or emissions inspection

Montana does not run an annual safety inspection program for passenger vehicles, and the state has no emissions inspection program. That means registration renewal is a straightforward fee transaction without a separate vehicle test. Mechanical condition is the owner's responsibility — Montana doesn't catch worn tires, broken signals, or excess emissions until a state trooper or county sheriff pulls the vehicle over.

Late renewal

Montana charges a late penalty equal to 10% of the renewal fee on registrations more than 30 days past expiration, with a minimum penalty of $5. Renewals more than 1 year past expiration may require a fresh registration application with a VIN inspection. Driving with expired tags can also trigger insurance lapses if the policy auto-cancels on registration expiration.

Lost decals or registration card

If you lose the registration card or decals, request a duplicate at your county treasurer's office or through the online portal where available. The duplicate fee is typically $5-$10. The replacement card and decals are mailed in 7-10 business days; in-office requests are completed same-day.

County option tax at renewal

A handful of Montana counties levy a small county option tax on annual registration renewals — typically 0%-0.7% of the vehicle's depreciated value. The tax goes to county-level transportation funding. Most counties don't charge the tax, but those that do (including some larger Yellowstone, Cascade, and Lewis and Clark county jurisdictions) collect it as part of the renewal fee. The total renewal cost is the same whether you renew online or at the county treasurer.