What Connecticut requires to renew your registration

Connecticut registration renewal happens through the Department of Motor Vehicles (DMV), and you can complete it online, by mail, or in person at a DMV office. The state sends renewal notices 30 days before your registration expires, and you have a grace period of 30 days after expiration to renew without penalty — but driving on an expired registration is illegal and can result in a fine.

To renew, you need your current registration card, proof of a passing emissions test (if your vehicle requires one), and proof of insurance. Connecticut requires all registered vehicles to carry liability insurance, and the DMV verifies this electronically when you renew. If your insurance has lapsed or you've switched providers, you must have the new policy in place before you submit your renewal.

The renewal fee depends on your vehicle's weight and age. Connecticut charges an annual registration fee that ranges based on gross vehicle weight rating (GVWR), not on the vehicle's market value. Older vehicles and lighter vehicles typically cost less to register than newer or heavier ones. You can find the exact fee for your vehicle on the DMV website by entering your vehicle information.

Key Takeaways

  • Connecticut sends renewal notices 30 days before expiration, and you have until 30 days after expiration to renew without a penalty.
  • Online renewal through the DMV website is the fastest option and requires only your registration card and current insurance information.
  • Your vehicle must pass an emissions test before renewal if it is subject to testing — this is a separate step from the DMV process.
  • Registration fees are based on your vehicle's gross weight rating, not its age or value, and vary from roughly $50 to $200 annually depending on weight class.
  • If your registration has already expired, you can still renew within 30 days of the expiration date without additional penalties.

Renewing online through the Connecticut DMV website

The Connecticut DMV website (ct.gov/dmv) offers online renewal for most vehicles, and this is the fastest and most convenient method. You log in with your driver's license number and date of birth, then enter your vehicle information and current registration number. The system pulls up your renewal notice and shows the exact fee owed.

Online renewal requires that your insurance information be current in the DMV system. If you recently changed insurance companies, contact your new insurer and ask them to file an SR-22 or proof of insurance with the state — this usually happens automatically, but you can verify it by calling the DMV at 860-263-5700 to confirm your coverage is on file before you attempt to renew online.

Once you complete the online renewal and pay the fee by credit card or debit card, the DMV mails your new registration card to the address on file. This typically takes 7 to 10 business days. You can drive legally during this period as long as your old registration was not yet expired; if it has expired, print the online confirmation page and carry it with you until the new card arrives.

Renewing by mail or in person at a DMV office

If you prefer not to renew online, you can mail your renewal notice and payment to the DMV address listed on the notice itself. Include a check or money order for the registration fee, your current registration card, and proof of insurance. Mail renewal takes longer — typically 2 to 3 weeks — so submit it well before your expiration date if you choose this route.

In-person renewal at a DMV office is an option if you need to update your address, add or remove a vehicle owner, or if you have questions about your renewal. Connecticut has DMV offices in multiple locations, and you can find the nearest one and check wait times on the state website. Bring your registration card, proof of insurance, and a valid ID. In-person renewal is usually completed the same day, and you receive your new registration card before you leave.

If your vehicle requires an emissions test and you have not yet passed it, you cannot complete renewal in person or by mail until the test is done. The DMV will not process your renewal without proof of a passing emissions result.

Emissions testing requirements before renewal

Connecticut requires emissions testing for most gasoline vehicles that are 1995 or newer, and for all diesel vehicles. The test must be completed within 14 days before your registration expires. You can take your vehicle to any state-licensed emissions testing station — these are independent shops, not DMV offices — and the test takes about 15 minutes.

The emissions test costs roughly $35 to $50 depending on the testing station. When your vehicle passes, the testing station provides a receipt or certificate with a unique number. You must include this number or certificate when you renew your registration, whether you renew online, by mail, or in person. If your vehicle fails the test, you have 30 days to make repairs and retest at no additional charge.

Some vehicles are exempt from emissions testing: vehicles that are 1994 or older, vehicles registered as historic or antique, and vehicles that have been registered in Connecticut for less than 60 days. Check the DMV website or call 860-263-5700 to confirm whether your specific vehicle requires testing.

What happens if your registration expires

Driving with an expired registration is illegal in Connecticut. If you are stopped by police, you face a fine that starts at $75 for a first offense and increases for repeat violations. The fine is separate from any late fees the DMV may charge.

You have 30 days after expiration to renew without a late fee. After 30 days, the DMV adds a penalty to your renewal fee — the amount varies but is typically $25 to $50 on top of the standard registration cost. If your registration has been expired for more than 60 days, you may need to renew in person at a DMV office rather than online.

If you let your registration lapse for an extended period and then want to renew, contact the DMV directly at 860-263-5700 to find out what documents and steps you need. In some cases, you may need to pass a vehicle inspection or provide additional proof of ownership.

Changing vehicle information during renewal

If your address, name, or vehicle ownership has changed since your last registration, you can update this information during renewal. Online renewal allows you to change your address; if you need to change ownership (add or remove an owner), you must renew in person at a DMV office or by mail with a notarized form.

If you are renewing after a life event — marriage, divorce, or a change in vehicle ownership — bring the relevant documents: a marriage certificate, divorce decree, or bill of sale. The DMV office staff can tell you exactly what you need when you call or visit.

Updating your address during renewal is important because the DMV uses your registered address to send future renewal notices and to contact you if there are any issues with your registration. If you move and do not update your address, you may miss your renewal notice.

Frequently Asked Questions

Can I renew my Connecticut registration if my vehicle has not passed emissions testing?

No. If your vehicle is subject to emissions testing, you must have a passing test result before the DMV will process your renewal. You can take the test at any licensed emissions station; it costs $35 to $50 and takes about 15 minutes. If you fail, you have 30 days to make repairs and retest at no charge.

What do I do if I did not receive my renewal notice in the mail?

You can still renew without the notice. Log into the DMV website with your driver's license number and date of birth, or call 860-263-5700 to get your renewal information. The DMV can tell you your current fee and expiration date over the phone.

How long does it take to get my new registration card after I renew online?

The DMV typically mails your new card within 7 to 10 business days of online renewal. You can drive legally with your printed confirmation page during this time if your old registration has not yet expired. If your registration has already expired, carry the confirmation page as proof of renewal.

Is there a grace period if my registration expires?

Yes. You have 30 days after expiration to renew without a late fee. After 30 days, the DMV adds a penalty of $25 to $50 to your renewal fee. Driving on an expired registration is illegal and can result in a fine from police, separate from any DMV penalty.

What if I sold my vehicle or no longer need to register it?

Contact the DMV at 860-263-5700 or visit a DMV office to cancel your registration. Bring your registration card and proof that you no longer own the vehicle (such as a bill of sale or title transfer). Canceling stops you from being charged renewal fees and removes the vehicle from your record.