What You Need to Register a Vehicle in Missouri

Missouri requires you to register any vehicle you own or operate on public roads. You'll register through your county assessor's office, not through a state office. The process takes about 15 minutes in person, though you can also handle it by mail or online for renewals.

To register a new vehicle in Missouri, you need: the manufacturer's certificate of origin or title from your previous state, a completed Form 108 (process for Missouri Title and Registration), proof of insurance, and payment for registration fees. If you're registering a used vehicle you bought in Missouri, bring the bill of sale and the seller's title.

Your county assessor's office will issue your registration certificate and license plates at the same visit. Plates arrive when ready; you don't wait for them to be mailed. Missouri plates stay with the vehicle, not the owner, so if you sell the car, the new owner keeps the plates.

Key Takeaways

  • Register your vehicle at your county assessor's office, which handles both title and registration in one transaction.
  • New vehicle registrations require the manufacturer's certificate of origin or an out-of-state title, plus proof of insurance and Form 108.
  • Registration fees vary by vehicle weight and age; a typical passenger car costs between $150 and $250 for the first registration.
  • Missouri plates stay with the vehicle when you sell it, so you don't transfer plates to a new car.
  • You can renew registration online through the Missouri Department of Revenue website if your vehicle information hasn't changed.

Registration Fees and What They Cover

Missouri registration fees depend on your vehicle's gross vehicle weight rating (GVWR), not its actual weight. A passenger car with a GVWR under 3,500 pounds costs less than a truck or SUV rated above that threshold. The state also charges a one-time title fee when you first register the vehicle.

Your registration fee covers one year of registration. When you renew, you pay the same fee structure again. Missouri does not charge separate emissions testing fees at registration, though some counties may require emissions testing for older vehicles—check with your county assessor about local rules.

If you register a vehicle partway through the year, you still pay the full annual fee; Missouri does not prorate registration. Your registration expires on your birthday each year, so if you register in March, your first registration runs until your birthday in the following year.

Where to Register and What Documents to Bring

Visit your county assessor's office in person to register a new vehicle. You cannot register a new vehicle online or by mail. Bring your photo ID, proof of insurance (your insurance card or declaration page), the title or certificate of origin, and the completed Form 108. If you're registering a used vehicle purchased in Missouri, bring the bill of sale signed by both you and the seller.

The assessor's office is usually located in the county courthouse or a separate county building. Hours vary by county, but most are open Monday through Friday during standard business hours. Some larger counties offer extended hours or Saturday appointments; check your county assessor's website for specifics.

Bring cash, check, or debit card for payment. Most offices do not accept credit cards. If you're registering a vehicle with a lien (a loan against it), bring the lender's name and address; the assessor will note this on the title.

Renewing Your Registration Online or by Mail

You can renew your Missouri registration online through the Missouri Department of Revenue website if your vehicle information hasn't changed and you don't need new plates. Online renewal takes about five minutes and costs the same as in-person renewal. You'll need your current registration certificate and proof of insurance.

To renew by mail, send your registration certificate, proof of insurance, and payment to your county assessor's office. Include a note with your vehicle information. Mail renewal takes two to three weeks, so send it at least a month before your registration expires.

If you need new plates—because yours are damaged, lost, or you want a specialty plate—you must renew in person at the assessor's office. Replacement plates cost extra and are issued on the spot.

Special Plates and Registration Options

Missouri offers several specialty plate options, including military veteran plates, conservation plates that fund wildlife programs, and personalized plates with custom lettering. Each specialty plate costs more than a standard plate and requires an in-person process at your county assessor's office.

If you own a vehicle registered in another state but now live in Missouri, you have 30 days to register it in Missouri. After 30 days, driving an out-of-state registered vehicle is not permitted. Bring your out-of-state title, proof of insurance, and Form 108 to your assessor's office to transfer the registration.

Disabled drivers and disabled veterans can request special license plates that allow them to park in accessible spaces. These plates are issued at no extra cost and require documentation from your doctor or the Department of Veterans Affairs.

What Happens If You Don't Register

Driving an unregistered vehicle in Missouri is a traffic violation. Police can stop you and issue a citation, which carries a fine starting at $100 and can go higher depending on how long the vehicle has been unregistered. If you're stopped and cannot show proof of registration, your vehicle can be impounded.

If your registration expires and you continue to drive, you're driving with expired registration, which is also a violation. Renew before your birthday to avoid this. If you forget and drive with expired registration, you can still renew and show proof to the officer if stopped; many officers will not cite you if you renew when ready.

If you sell your vehicle, notify your county assessor in writing. You remain liable for any violations or unpaid fees on that vehicle until the new owner registers it in their name. The new owner has 30 days to register the vehicle.

Registering a Vehicle You Bought Out of State

If you bought a vehicle in another state and are moving to Missouri, bring the out-of-state title to your county assessor's office. Missouri will issue a new Missouri title and registration. You do not need to keep the out-of-state title; Missouri will retain it in their records.

Some states issue electronic titles instead of paper titles. If your previous state uses electronic titles, contact that state's motor vehicle department to request a paper copy or electronic transfer to Missouri. Your Missouri assessor can guide you through this if you're unsure.

If you bought a vehicle from a private seller out of state and the title is in the seller's name, the seller must sign the title over to you before you register it in Missouri. You cannot register a vehicle in Missouri if the title is in someone else's name.

Frequently Asked Questions

Can I register my vehicle online if I just bought it?

No. New vehicle registrations must be done in person at your county assessor's office. You can only register online if you're renewing an existing registration and your vehicle information hasn't changed. Bring your title or certificate of origin and proof of insurance to the assessor's office.

What if I move to a different county in Missouri?

You do not need to re-register your vehicle when you move within Missouri. Your registration remains valid as long as you renew it on time. However, if you move to a different county, you may want to update your address with the assessor's office for your records. Contact your new county assessor for their process.

Do I need an emissions test to register my car in Missouri?

Missouri does not require statewide emissions testing for registration. However, some counties in the St. Louis and Kansas City areas may require emissions testing for vehicles over a certain age. Check with your county assessor to see if your county has local emissions requirements.

How long does it take to get my registration certificate?

You receive your registration certificate and plates when ready when you register in person at your county assessor's office. There is no waiting period. If you renew by mail, allow two to three weeks for processing and mailing.

What if my registration certificate gets lost or damaged?

Visit your county assessor's office and request a replacement. Bring your photo ID and vehicle information. A replacement certificate costs a small fee and is issued the same day. You can also request a duplicate by mail if you include a check and your vehicle information.