What You Need to Register a Car in Missouri

Missouri car registration happens through your county assessor's office, not a state DMV — each county handles its own registrations. You will need the vehicle's title (proof of ownership), a completed registration form, proof of residency, and payment for the registration fee. The fee depends on the vehicle's age and weight, so costs vary by car. If you are registering a used car you just bought, you will also need the bill of sale or purchase agreement showing the sale price.

The process is straightforward if you have all documents ready. Most people complete registration in one visit to their county assessor's office, though some counties now accept mail-in registration or online renewal for existing registrations. First-time registrations almost always require an in-person visit so the assessor can verify the vehicle identification number (VIN) matches your title.

Key Takeaways

  • Registration happens at your county assessor's office, and each county sets its own hours and processes, so call ahead before visiting.
  • You must bring your vehicle title, a completed Form 108 (the Missouri registration process), proof you live in Missouri, and payment for the registration fee.
  • Registration fees are based on the vehicle's age and weight, not its value, so a ten-year-old sedan and a ten-year-old truck cost different amounts.
  • New vehicle registrations require an in-person visit so the assessor can verify the VIN, but many counties allow mail-in or online renewal for vehicles already registered.

Documents You Must Bring to the Assessor's Office

Start by gathering your vehicle title — this is the legal proof that you own the car. If you bought the car from a dealer, they usually handle the title transfer and give you the paperwork to take to the assessor. If you bought it from a private seller, you need the title signed over to you by the previous owner. The title must be in your name or the name of the person registering the vehicle.

Next, you need Form 108, which is Missouri's vehicle registration process. You can read this from your county assessor's website or pick up a copy at their office. Fill in your name, address, the vehicle information (year, make, model, VIN), and the odometer reading. Bring proof that you live in Missouri — a utility bill, lease agreement, or mortgage statement dated within the last 60 days works. If you moved recently and your address on your title does not match your current address, bring a document showing your new address.

If you are registering a used vehicle you purchased, bring the bill of sale or purchase agreement showing the sale price. The assessor uses this to calculate the registration fee. Bring your driver's license or state ID as well. If someone else is registering the vehicle on your behalf, bring a signed power of attorney form.

How Registration Fees Are Calculated

Missouri registration fees are based on two things: the vehicle's age and its weight. The fee is not based on the car's value or condition. A five-year-old sedan and a five-year-old luxury car pay the same fee if they weigh the same. The older the vehicle, the lower the fee — a 15-year-old car costs less to register than a 5-year-old car.

You can find the exact fee by looking up your vehicle's weight and year on your county assessor's website, or call the office and give them those details. Most counties charge between $100 and $300 for a standard passenger vehicle registration, but this varies. If you are registering a commercial vehicle, truck, or motorcycle, the fee structure is different. Bring a check or cash — not all assessor offices accept credit cards, so call ahead to confirm payment methods.

Registering a Vehicle You Just Bought

If you purchased a car from a dealer, the dealer usually handles the title process and gives you a temporary registration document. Take this paperwork to your county assessor's office within 30 days. Bring the title (once it arrives in your name), the bill of sale, your proof of residency, and Form 108. The assessor will verify the VIN on the vehicle matches the title and process your permanent registration.

If you bought the car from a private seller, the seller must sign the title over to you before you go to the assessor. Do not drive the car to the assessor's office without at least a temporary registration or bill of sale in your car — you need proof of ownership if stopped by police. Once at the assessor's office, bring the signed title, the bill of sale showing the purchase price, and your other documents. The assessor will verify the VIN and issue your registration.

Registration is valid for one or two years depending on your vehicle type — most passenger cars are registered for two years. Your registration sticker goes on your license plate, and you will receive a registration card to keep in your vehicle. Mark your calendar for the renewal date so you do not accidentally let it expire.

Renewing Your Registration

When your registration is about to expire, your county assessor's office will mail you a renewal notice. Many Missouri counties now allow you to renew online or by mail without visiting the office in person. Check your county assessor's website to see if online renewal is available — if it is, you can renew from home and the new sticker will arrive by mail.

If your county does not offer online renewal, you can mail in your renewal form and payment, or visit the office in person. The renewal notice will tell you the new fee and where to send payment. If you renew by mail, send it at least two weeks before your registration expires to make sure it arrives in time. If you renew online, the system will tell you when ready whether your renewal went through.

Do not let your registration expire. Driving with an expired registration can result in a traffic ticket and fine. If your registration has already expired, you can still renew it — there is no penalty for renewing late, but you should do so as soon as possible.

What Happens If You Move to a Different County

If you move within Missouri to a different county, you do not need to re-register your vehicle when ready. Your current registration remains valid until it expires. However, when it comes time to renew, you will renew through your new county's assessor's office instead of your old one.

When you renew, bring your current registration card, proof of your new address in the new county, and payment for the renewal fee. The new county may charge a different fee than your old county because registration fees vary by county. Your new registration sticker will be issued by the new county, and you will receive a new registration card.

Registering a Vehicle You Inherited or Received as a Gift

If you inherited a vehicle or received one as a gift, you need to transfer the title into your name before you can register it. The person who owned the vehicle (or their estate, if they passed away) must sign the title over to you. For an inheritance, you may need to provide a copy of the will or a court document showing you are the legal heir. For a gift, the giver straightforward signs the title and gives it to you.

Once you have the signed title, take it to your county assessor's office along with Form 108, proof of residency, and payment for the registration fee. The assessor will process the title transfer and issue your registration. If the vehicle has not been registered in several years, the assessor may ask for additional documentation or an inspection to verify the VIN.

Frequently Asked Questions

Can I register my car online in Missouri?

Renewal of existing registrations is available online in many Missouri counties, but new registrations require an in-person visit to verify the VIN. Check your county assessor's website to see if online renewal is offered. If you are registering a vehicle for the first time in Missouri, you must visit the assessor's office.

What if I lost my vehicle title?

Contact your county assessor's office — they can issue a duplicate title. Bring your driver's license, proof of residency, and a completed Form 108. There is a small fee for a duplicate title, usually between $10 and $25. The process takes a few days to a few weeks depending on the county.

Do I need to pass an emissions test before registering in Missouri?

Missouri does not require emissions testing statewide. Some counties in the St. Louis and Kansas City areas do require emissions tests for certain vehicles, so check your county's requirements. If your county requires it, you must pass the test before the assessor will issue registration.

How long does registration take after I submit everything?

If you register in person at the assessor's office, you usually receive your registration sticker and card the same day. If you renew by mail, allow two to three weeks for processing and delivery. Online renewals are typically processed within a few days, and the sticker arrives by mail within one to two weeks.

What if my vehicle's weight is listed differently on different documents?

The assessor uses the weight listed on your vehicle's title or manufacturer specifications. If you believe the weight is incorrect, bring documentation from the manufacturer or a certified scale showing the actual weight. The assessor can adjust the fee if the weight on file is wrong.