Connecticut vehicle registration renews every two years, and you can renew online, by mail, or in person at a DMV office

Connecticut's Department of Motor Vehicles (DMV) sends renewal notices 60 days before your registration expires. You do not have to wait for the notice to arrive — you can renew as soon as 90 days before expiration. The online renewal portal is the fastest route: you enter your vehicle identification number (VIN) and driver's license number, pay the renewal fee, and receive your new registration when ready. If you prefer mail or in-person renewal, the process takes longer but follows the same basic steps.

Your registration renewal fee depends on your vehicle's weight and age. Connecticut charges a base fee plus a weight-based surcharge. The state also collects a $10 vehicle emissions testing fee at renewal, though this fee is waived if your vehicle is exempt from emissions testing (generally vehicles over 25 years old or certain electric vehicles). You can pay by credit card, debit card, or check.

Key Takeaways

  • Connecticut registration renews every two years, and you can renew online starting 90 days before expiration.
  • Online renewal through the DMV website is the fastest method and gives you a new registration number when ready.
  • Your renewal fee is based on your vehicle's weight and includes a $10 emissions testing fee unless your vehicle is exempt.
  • If you renew by mail or in person, bring your current registration card and a valid form of payment.
  • Driving with an expired registration can result in a fine; renewing before the expiration date avoids this penalty.

Online renewal through the Connecticut DMV portal

The Connecticut DMV website allows you to renew registration without visiting an office. Go to ct.gov/dmv, select the vehicle registration renewal option, and enter your VIN and driver's license number. The system will pull up your vehicle record and show you the renewal fee. You pay by credit or debit card, and the system generates a new registration number on the spot.

Online renewal works only if your vehicle record is current and you have no outstanding violations or holds on your account. If the system flags an issue — such as a lapsed emissions test or an unpaid parking ticket — you will need to resolve it before completing the renewal. The DMV website tells you what the problem is and how to fix it.

After you pay online, print your new registration confirmation when ready. Connecticut does not mail a physical registration card for online renewals; the confirmation serves as proof of registration until your permanent card arrives by mail, which typically takes one to two weeks. Keep the confirmation in your vehicle.

Mail renewal and what documents to send

If you prefer to renew by mail, the DMV renewal notice includes a prepaid envelope and a renewal form. Fill out the form, include your current registration card, and mail it with a check or money order for the renewal fee. Do not send cash through the mail.

Mail renewal takes two to three weeks from the time the DMV receives your envelope. The DMV processes mail renewals in the order received, so sending your renewal early — even 90 days before expiration — does not speed up the timeline. Your new registration card will arrive by mail after processing is complete.

If you did not receive a renewal notice, you can request a renewal form from the DMV website or call the DMV customer service line. You will still need your current registration card and the renewal fee.

In-person renewal at a Connecticut DMV office

You can renew your registration at any Connecticut DMV branch office. Bring your current registration card, a valid form of payment (cash, check, or card), and your driver's license. The process takes 15 to 30 minutes depending on how busy the office is.

DMV offices are open Monday through Friday during standard business hours, with limited Saturday hours at some locations. You can check the DMV website for your nearest office, hours, and current wait times. Some offices allow you to reserve a time slot online, which can reduce your wait.

When you renew in person, you receive your new registration card on the spot. This is the only renewal method that gives you a physical card when ready, which is useful if your current card is damaged or lost.

Registration fees and what they cover

Connecticut's registration renewal fee is calculated using a base fee plus a weight surcharge. The base fee is the same for all vehicles, but the weight surcharge increases with vehicle weight. A vehicle under 3,500 pounds pays a lower surcharge than one over 5,000 pounds. The DMV website has a fee calculator where you can enter your vehicle weight and see the exact amount you owe.

Every renewal includes a $10 vehicle emissions testing fee. This fee funds Connecticut's emissions testing program. However, if your vehicle is exempt from emissions testing — such as vehicles manufactured before 1995, certain electric vehicles, or vehicles with a gross vehicle weight rating over 10,000 pounds — the $10 fee is waived. The DMV system automatically applies the exemption if your vehicle qualifies.

Connecticut also collects a $5.50 administrative fee for online renewals and a $1 fee for mail renewals. In-person renewals have no additional administrative fee beyond the registration and emissions fees.

What happens if your registration expires

Driving with an expired registration is illegal in Connecticut. If you are stopped by police, you can receive a fine. The amount of the fine varies, but it is typically between $60 and $200 depending on how long your registration has been expired. You also risk having your vehicle impounded if the registration is significantly overdue.

If your registration has expired, you can still renew it at any time. There is no grace period, but renewing when ready stops the clock on potential fines. If you were cited for an expired registration, renewing does not automatically dismiss the ticket — you would need to address that separately through the court system or by contacting the officer who issued it.

Connecticut allows you to renew your registration up to 90 days before expiration, so there is a long window to avoid letting it lapse. Setting a calendar reminder when you receive your renewal notice is a straightforward way to stay on track.

Emissions testing requirements at renewal

Connecticut requires most vehicles to pass an emissions test before registration renewal. You must complete the test within 60 days before you renew your registration. The test is performed at an authorized emissions testing station, not at the DMV.

When you renew your registration — whether online, by mail, or in person — the DMV checks whether your vehicle has a current emissions test on file. If it does not, your renewal will be blocked until you complete the test. You can find authorized testing stations on the Connecticut Department of Energy and Environmental Protection (DEEP) website.

Vehicles exempt from emissions testing include those manufactured before 1995, electric vehicles, vehicles with a gross vehicle weight rating over 10,000 pounds, and certain other categories. If your vehicle is exempt, you do not need a test to renew, and the $10 emissions fee is waived.

Frequently Asked Questions

Can I renew my registration if my vehicle has an outstanding parking ticket?

No. Connecticut holds registration renewals if there are unpaid parking violations or other outstanding fines on your vehicle record. You must pay the violation before the DMV will process your renewal. Contact the municipality where the ticket was issued to pay it, then attempt your renewal again.

What if I lose my registration card before renewal?

You can still renew your registration. If you are renewing online, you only need your VIN and driver's license number. If you are renewing by mail or in person, bring your driver's license and any proof of vehicle ownership (such as your insurance card or title). The DMV can look up your registration record without the physical card.

How long does it take to receive my new registration card by mail?

After the DMV processes your renewal, your new registration card arrives by mail within one to two weeks. If you renewed online, print your confirmation when ready and keep it in your vehicle until the card arrives. If you renewed by mail or in person, the DMV will mail your card after processing is complete.

Can I renew my registration if I just moved to Connecticut?

If you recently moved to Connecticut from another state, you need to register your vehicle in Connecticut before you can renew an out-of-state registration. Visit a DMV office with your out-of-state registration, proof of residency, and your vehicle title to complete an initial Connecticut registration. After that, you can renew using the standard renewal process.

What if my vehicle is registered in someone else's name?

If you are not the registered owner, you cannot renew the registration. The registered owner must renew it themselves or provide you with written authorization. Some DMV offices allow authorized representatives to renew on behalf of the owner, but you will need a signed power of attorney or similar document. Contact your local DMV office to confirm what documentation they require.