What you need to do to renew in Colorado

Colorado sends renewal notices by mail 30 to 60 days before your registration expires. The notice includes your renewal fee amount, which depends on your vehicle's age and type. You can renew online through the Colorado Department of Revenue website, by mail, or in person at any county clerk's office.

Online renewal is the fastest route — you'll need your current registration card, driver's license number, and a payment method. The transaction takes about 10 minutes, and you'll receive a temporary registration number when ready. Your physical registration card arrives by mail within one to two weeks.

If you renew by mail, send your renewal notice with payment to the address listed on the form. Processing takes two to three weeks. In-person renewal at your county clerk's office is when ready — you walk out with your new registration card the same day.

Key Takeaways

  • Colorado mails renewal notices 30 to 60 days before expiration, and the notice shows your exact renewal fee.
  • Online renewal through the Colorado Department of Revenue website is fastest and gives you a temporary registration number right away.
  • You can also renew by mail or in person at your county clerk's office, though in-person is the only option that gives you your new card when ready.
  • Your renewal fee depends on your vehicle's age and type, and Colorado does not charge a separate emissions test fee for registration renewal.
  • If your registration has already expired, you can still renew online or at the county clerk, but driving with an expired registration is illegal.

Renewal fees and what affects the cost

Colorado calculates registration fees based on your vehicle's age, type (passenger car, truck, motorcycle, RV), and whether it runs on gasoline or an alternative fuel. A newer passenger car typically costs less to renew than an older truck. The state publishes a fee schedule, but the exact amount for your vehicle appears on your renewal notice.

You may also owe a county-specific fee or a local transportation fee, depending on where you live. These vary by county and are included in the total on your renewal notice. If you have unpaid traffic tickets or child support obligations, the county clerk's office may hold your renewal until those are resolved.

Colorado does not require a separate emissions test to renew your registration. However, if your vehicle is registered in the Denver metro area (Adams, Arapahoe, Boulder, Douglas, El Paso, Jefferson, Larimer, Weld, or Broomfield counties), you may need to pass an emissions inspection before renewal. Check your renewal notice or your county clerk's website to confirm whether your county requires this.

Online renewal through the Colorado Department of Revenue

The Colorado Department of Revenue website (dor.colorado.gov) has a vehicle registration renewal portal. You'll enter your vehicle identification number (VIN), current registration number, and driver's license number. The system will pull up your vehicle record and show your renewal fee.

Payment is by credit card, debit card, or electronic check. Once you complete the transaction, you'll receive a confirmation number and a temporary registration number valid for 30 days. This temporary number is legal to display while you wait for your physical card.

You cannot renew online if your vehicle has a lien (the lender still owns it), if your address has changed and you haven't updated it with the county clerk, or if there are holds on your record. In those cases, you'll need to visit your county clerk's office in person or contact them by phone to resolve the issue first.

Mail-in renewal and what to send

Your renewal notice includes a return envelope and instructions for mailing. Send the notice itself, your payment (check or money order), and a copy of your driver's license or ID. Do not send your registration card — you'll keep it.

Mail your renewal to the address on the notice, not to the state office. Each county has its own processing center. Processing takes two to three weeks from the date the clerk's office receives your envelope, so mail early if your registration expires soon.

Keep a copy of your check or money order number for your records. If your renewal gets lost in the mail, you can contact your county clerk's office with the confirmation number from your notice to confirm receipt and resubmit if needed.

In-person renewal at your county clerk's office

Every Colorado county has a clerk's office that handles vehicle registration. Bring your renewal notice, current registration card, driver's license, and payment (cash, check, debit card, or credit card — accepted methods vary by county). The transaction takes 10 to 15 minutes, and you'll leave with your new registration card.

County clerk office hours and locations vary. Most are open Monday through Friday during business hours, and some offer extended hours or Saturday appointments. Search online for "[your county] Colorado clerk's office" to find the nearest location and hours.

If you cannot find your renewal notice, bring your vehicle identification number (VIN) and driver's license. The clerk can look up your vehicle record and process the renewal without the notice, though you'll need to pay any applicable fees.

What happens if your registration expires

Driving with an expired registration is illegal in Colorado. A police officer can stop you and issue a citation, which carries a fine. If your registration has been expired for more than 30 days, you may also face additional penalties.

You can still renew your registration after it expires — there is no grace period, but the process is the same. Renew online, by mail, or in person as soon as possible. Once your renewal is processed, your registration is valid from the date you renew, not from the original expiration date.

If you were driving with an expired registration and received a ticket, you can show proof of renewal to the court or to the officer who issued the citation. Some courts will dismiss the ticket if you renew before your court date, though this varies by jurisdiction.

Address changes and other updates before renewal

If you've moved since your last registration, update your address with your county clerk's office before renewing. You can do this online through the Colorado Department of Revenue website, by mail, or in person. Your renewal notice is mailed to the address on file, so if you've moved and haven't updated it, your notice may go to your old address.

If your vehicle has a lien (the lender owns it until you pay off the loan), the lender's name appears on your registration. When you renew, the lien information carries over automatically. If you've paid off the loan, contact your lender to get a lien release letter, then bring it to your county clerk to remove the lien from your record before renewing.

If your name has changed due to marriage, divorce, or legal name change, update it with your county clerk before renewing. Bring a certified copy of the document showing the name change (marriage certificate, divorce decree, or court order) and your current driver's license.

Frequently Asked Questions

Can I renew my Colorado registration if I don't have the renewal notice?

Yes. If you've lost the notice, you can renew online using your VIN and driver's license number, or visit your county clerk's office with your VIN and ID. The clerk can look up your vehicle record and process the renewal without the physical notice.

What if I move out of Colorado before my registration expires?

You'll need to register your vehicle in your new state. Contact your new state's motor vehicle department for their registration process. You don't need to formally cancel your Colorado registration, but don't renew it if you no longer live in Colorado.

How long is my temporary registration number valid?

Your temporary registration number is valid for 30 days from the date you renew online. During this time, you can legally drive your vehicle while you wait for your physical registration card to arrive by mail.

Can I renew my registration if I have an outstanding traffic ticket?

It depends on the county. Some counties will hold your renewal if you have unpaid traffic fines or child support obligations. Contact your county clerk's office to find out whether there are any holds on your record before you attempt to renew.

Do I need an emissions test to renew my registration in Colorado?

Only if you live in one of the nine Denver metro area counties (Adams, Arapahoe, Boulder, Douglas, El Paso, Jefferson, Larimer, Weld, or Broomfield). Your renewal notice will tell you whether your county requires an emissions inspection. If it does, you must pass the test before your registration can be renewed.