How to Renew Your Car Registration in Colorado

Colorado car registration renews every year or two, depending on your vehicle type and when you last registered it

Colorado issues registration stickers that expire on a date printed on your current registration card. Most passenger vehicles renew annually on the owner's birthday month, though some registrations run on a calendar-year cycle. You renew through the Colorado Department of Revenue, Division of Motor Vehicles (DMV), either online, by mail, or in person at a county clerk's office. The state charges a base registration fee plus an emissions inspection fee if your vehicle requires one.

You do not need to visit an office if you renew before your current registration expires. Online renewal through the Colorado DMV website takes about 10 minutes and processes when ready. Mail renewal takes longer but works if you prefer not to go online. In-person renewal at a county clerk's office is necessary only if your registration has already expired, if you cannot pay online, or if you need to update vehicle information.

Key Takeaways

Colorado registration renews on your birthday month for most vehicles, and you can renew online through the state DMV website before expiration.
You will need your current registration card, proof of vehicle insurance, and a valid payment method (credit card, debit card, or electronic check).
Vehicles registered in Colorado counties with air quality concerns must pass an emissions inspection before renewal, which costs extra and requires a separate appointment.
If your registration has already expired, you must renew in person at a county clerk's office and may face a late fee.
The base registration fee varies by vehicle weight and type; the state website shows your exact fee before you pay.

When your Colorado registration expires and how to find your renewal date

Your registration expiration date is printed on the front of your registration card in the upper right corner. For most passenger vehicles, this date falls in your birthday month — the month you were born. If you were born in March, your registration expires in March each year. The exact day within that month depends on when you originally registered the vehicle.

Some vehicle types renew on a different schedule. Commercial vehicles, motorcycles, and vehicles registered under a business name may renew on a calendar-year basis (December 31) instead of a birthday month. Check your current registration card to confirm your expiration date rather than assuming it follows the birthday rule.

You can renew up to six months before your registration expires. The Colorado DMV recommends renewing at least two weeks before expiration to avoid late fees and to allow time for mail delivery if you choose that method. If you renew online, the new registration is active when ready.

Documents and information you need to renew online or by mail

Gather these items before you start the renewal process:

Your current Colorado vehicle registration card
Proof of current vehicle insurance (the policy number and coverage dates)
A valid payment method: credit card, debit card, or bank account information for an electronic check
Your vehicle identification number (VIN), which appears on your registration card and on the vehicle itself

If your vehicle information has changed since your last registration — such as a new address, a name change, or a lien holder change — you cannot renew online. You must visit a county clerk's office in person and bring documents that prove the change, such as a new driver's license, marriage certificate, or loan paperwork.

Insurance proof is mandatory. Colorado law requires all registered vehicles to carry liability insurance. The DMV verifies your insurance through an electronic database, but you should have your policy number and coverage dates on hand in case the verification fails. If the system cannot confirm your coverage, your renewal will be rejected and you will need to contact your insurance company to may support the information is correct.

Emissions inspection requirements and how to schedule one

Vehicles registered in certain Colorado counties must pass an emissions inspection before renewal. These counties include Denver, Adams, Arapahoe, Boulder, Douglas, El Paso, Jefferson, Larimer, Pueblo, and Weld. If your vehicle is registered in one of these counties, you cannot complete renewal until you have a passing emissions test on file with the state.

You must schedule the emissions inspection separately from your registration renewal. The Colorado Department of Public Health and Environment maintains a list of approved emissions testing stations on its website. Call ahead to confirm hours and pricing, which typically ranges from $20 to $30 per test. The inspection takes about 15 minutes and tests your vehicle's exhaust for pollutants.

Once you pass the inspection, the testing station sends the results electronically to the DMV. You can then complete your registration renewal online or by mail. If your vehicle fails the inspection, you must have repairs made and retest before you can renew. Some repair shops offer free or discounted retests if you use them for repairs.

How to renew online through the Colorado DMV website

Visit the Colorado Department of Revenue Division of Motor Vehicles website and select the vehicle registration renewal option. You will enter your current registration card number and the last four digits of your VIN to pull up your record. The system will display your current registration information and the renewal fee amount based on your vehicle's weight and type.

Review the information for accuracy. If anything is incorrect — such as your address or vehicle description — stop and renew in person at a county clerk's office instead. Proceed only if all details match your current situation.

Enter your insurance policy number and the coverage dates. The system will attempt to verify your coverage electronically. If verification succeeds, you will move to the payment screen. If it fails, you will see an error message and must contact your insurance company to correct the information before trying again.

Select your payment method and enter the required information. The system accepts credit cards, debit cards, and electronic checks. Once payment processes, you will receive a confirmation number and your new registration is active when ready. You do not need to wait for a physical card to arrive in the mail — your confirmation number serves as proof of renewal until the new card arrives, which typically takes one to two weeks.

Renewing by mail and what to expect for timing

Request a renewal form from the Colorado DMV by calling the main DMV line or by visiting a county clerk's office. You can also read the form from the state website. Complete the form with your current registration information, sign it, and include a check or money order for the renewal fee. Attach a copy of your insurance card or policy.

Mail the completed form and payment to the address listed on the form. Processing by mail takes two to four weeks from the date the DMV receives your envelope. Mail your renewal at least three weeks before expiration to avoid late fees. If your registration expires before the DMV processes your renewal, you will owe a late fee in addition to the standard renewal fee.

You will receive your new registration card by mail. Until it arrives, keep your confirmation letter as proof of renewal. If you need to drive before the card arrives and your current registration has expired, carry the confirmation letter with you.

Renewing in person at a county clerk's office

Visit any county clerk's office in Colorado with your current registration card, proof of insurance, and a valid payment method. Bring your driver's license or other government-issued ID. If your registration has already expired or if you need to update vehicle information, in-person renewal is required.

The clerk will verify your information, confirm your insurance coverage, and collect payment. Processing takes about 15 minutes. You will receive your new registration card on the spot or within a few days, depending on the office's procedures. If your vehicle requires an emissions inspection, you must have a passing test on file before the clerk can process your renewal.

County clerk offices are located in the county seat of each Colorado county. Hours vary by location, so call ahead or check the county website before visiting. Some offices are busier during certain times of the month, so arriving early in the day or on a weekday may reduce wait times.

Late fees and what happens if your registration expires

If you renew after your registration expiration date, Colorado charges a late fee in addition to the standard renewal fee. The late fee amount depends on how long your registration has been expired. Renewing within 30 days of expiration typically costs less than renewing after 30 days. The exact late fee is shown on the renewal form or online before you pay.

Driving with an expired registration is illegal in Colorado. If you are stopped by law enforcement, you may receive a citation and fine. Your vehicle insurance may also deny a claim if you were in an accident while driving with expired registration. Renew as soon as you realize your registration has expired.

If your registration expired more than one year ago, you may not be able to renew it through the standard process. Contact a county clerk's office to determine whether your vehicle can be renewed or whether you need to re-register it as a new vehicle.

Frequently Asked Questions

Can I renew my Colorado registration if I just moved to the state?

If you moved to Colorado from another state, you must register your vehicle in Colorado within 90 days. This is a new registration, not a renewal, and requires a different process. Contact a county clerk's office or the Colorado DMV for information about out-of-state vehicle registration.

What if I sell my vehicle before my registration expires?

Notify the Colorado DMV of the sale within 10 days. You can do this online through the DMV website or in person at a county clerk's office. You do not need to renew the registration if you no longer own the vehicle. The new owner must register the vehicle in their name.

Do I need to renew my registration if I have a temporary registration sticker?

A temporary registration is not the same as a permanent registration. Temporary registrations are issued for short periods, usually 30 to 45 days. You must obtain a permanent registration before the temporary one expires. The process for obtaining permanent registration depends on your situation — contact a county clerk's office for guidance.

Can I renew my registration if my vehicle has a lien on it?

Yes, you can renew your registration even if a lender holds a lien. The lender's name will appear on your registration card. If the lien has been paid off, you must update this information in person at a county clerk's office before renewing online.

What if the Colorado DMV website is down or I cannot pay online?

You can renew by mail or in person at a county clerk's office. Mail renewal takes longer, so plan ahead if you choose this method. In-person renewal is processed when ready and is the fastest option if the online system is unavailable.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.