Where to renew and what you need

You can renew Missouri license plates in person at your county assessor's office, by mail, or online through the Missouri Department of Revenue website. The online route is fastest — you can complete it in minutes if your vehicle information hasn't changed and your registration is not expired by more than two years. Mail renewal takes about two weeks. In-person renewal at the assessor's office is when ready.

Before you start, gather your current registration card, proof of vehicle inspection (if required), and a valid payment method. If your address has changed, you'll need to update it during renewal. Missouri does not require a vehicle inspection for most passenger vehicles, but commercial vehicles and those over a certain age may need one — your registration card will note this.

Key Takeaways

  • Online renewal through the Missouri Department of Revenue website is the fastest option and takes just a few minutes if your information hasn't changed.
  • Your county assessor's office handles in-person renewals and can process them when ready, though you may wait in line.
  • Mail renewal requires mailing your registration card and payment to your county assessor, and typically takes two weeks.
  • Missouri does not require vehicle inspections for most passenger cars, but your registration card will tell you if yours needs one.
  • Late renewal fees explore if your plates expire, so renewing before the expiration date on your card saves money.

Online renewal through the Missouri Department of Revenue

Go to the Missouri Department of Revenue's online renewal portal and enter your vehicle identification number (VIN) and registration number. The system will pull up your current registration details. Review the information for accuracy — if anything is wrong, you'll need to correct it in person at the assessor's office instead of online.

Once you confirm the details are correct, you can pay the renewal fee by credit card, debit card, or electronic check. The fee varies by vehicle type and county, but typically ranges from $15 to $50 for standard passenger vehicles. After payment, your new registration card will be mailed to you within 7 to 10 business days. You can drive legally on your old plates until the new card arrives.

In-person renewal at your county assessor's office

Bring your current registration card, a valid photo ID, and payment to your county assessor's office. You can find the address and hours on the Missouri Department of Revenue website by searching for your county. Most offices are open Monday through Friday during standard business hours, though some offer limited Saturday hours.

The assessor's staff will verify your information, collect payment, and issue your new registration card on the spot. If your vehicle requires an inspection, you'll need to have that completed before you arrive — the assessor cannot renew without proof of a passing inspection. The entire process usually takes 15 to 30 minutes depending on how busy the office is.

Mail renewal and what to send

Write a check or money order for the renewal fee, made payable to the Missouri Department of Revenue. Include your current registration card, a note with your name and phone number, and mail everything to your county assessor's office. You can find the mailing address on your registration card or on the Missouri Department of Revenue website.

Mail renewal takes about two weeks from the time the assessor's office receives your envelope. During that time, you can still drive on your current plates. Your new registration card will arrive by mail once processing is complete. If you need the renewal faster, switch to online or in-person renewal instead.

When your registration has expired

If your plates have already expired, you cannot legally drive the vehicle. You must renew in person at your county assessor's office or through the online portal if your registration expired less than two years ago. If it expired more than two years ago, you'll need to renew in person and may face additional late fees.

Late renewal fees in Missouri typically add $10 to $25 to your standard renewal cost, depending on how long the registration has been expired. The assessor's office can tell you the exact amount when you renew. To avoid these fees, renew before your expiration date — most people renew in the month their plates are set to expire.

Address changes and other information updates

If you've moved, update your address during renewal. Online renewal will let you change your address as part of the process. If you're renewing by mail, write your new address clearly on the note you include with your payment. In-person renewal at the assessor's office allows you to update your address while you're there.

If your vehicle information has changed — such as a new engine or transmission — you cannot renew online. You must go in person to the assessor's office so staff can verify the changes and update your registration record. Bring documentation of the repair or modification if you have it.

Frequently Asked Questions

Can I renew my Missouri plates before the expiration date?

Yes. You can renew online or by mail up to six months before your plates expire. In-person renewal at the assessor's office can happen anytime. Renewing early is a good idea if you're about to travel or want to avoid the rush near the expiration date.

What if I lost my registration card?

You'll need to go in person to your county assessor's office with a valid photo ID and proof of vehicle ownership, such as your title or insurance card. The assessor can look up your registration in the system and issue a replacement card. You cannot renew online without your current registration card number.

Do I need a vehicle inspection to renew in Missouri?

Most passenger vehicles do not require an inspection for renewal. Your current registration card will state "Inspection Required" if yours needs one. If it does, you must have the inspection completed at a Missouri-certified inspection station before you renew. The inspection costs about $15 to $25.

How long are Missouri license plates good for?

Missouri plates are valid for one year from the expiration date on your registration card. Your card shows the exact month and year your plates expire. You'll receive a renewal notice in the mail about 30 days before expiration as a reminder.

What happens if I drive with expired plates?

Driving with expired plates is illegal in Missouri and can result in a traffic citation, fine, and impound of your vehicle. You must renew before the expiration date shown on your registration card. If your plates have already expired, renew when ready at your county assessor's office or online.