Connecticut car registration basics

Connecticut requires you to register any vehicle you own or operate in the state within 10 days of purchase or moving to Connecticut. You'll register through your town clerk's office, not a state DMV — each of Connecticut's 169 towns handles its own registrations. The town clerk issues your registration certificate and license plates, and you'll renew every two years on your birthday month.

Registration costs vary by vehicle type and weight. A standard passenger car typically costs between $120 and $180 for a two-year registration, though the exact fee depends on your town's rate and your vehicle's dry weight. You'll also pay a $5.50 agent fee if you register through a private agent rather than the town clerk directly.

You must have a valid driver's license, proof of ownership (title or bill of sale), and proof of Connecticut auto insurance before you can register. If you're financing the vehicle, your lender's name will appear on the title as lienholder.

Key Takeaways

  • Register your vehicle at your town clerk's office within 10 days of purchase or moving to Connecticut, not at a state office.
  • You need your vehicle title or bill of sale, proof of insurance, and a valid driver's license to complete registration.
  • Registration fees vary by town and vehicle weight, typically ranging from $120 to $180 for two years.
  • Connecticut registrations renew every two years during your birthday month, and you can renew online, by mail, or in person.
  • If you buy a used car from a private seller, you must obtain a bill of sale and have the seller sign the title before registering.

What documents you need to bring

Bring your vehicle title or bill of sale, depending on whether you're registering a new purchase or a used vehicle. If you're buying from a dealer, they'll provide the title. If you're buying from a private seller, you need a bill of sale signed by both you and the seller, and the seller must sign the back of the title transferring ownership to you.

You'll also need proof of Connecticut auto insurance. Your insurance company will issue a proof of insurance document (sometimes called a declarations page or ID card) that shows your policy number, coverage dates, and vehicle identification number. Bring the original or a copy — most town clerks accept either.

Bring a valid photo ID, typically your Connecticut driver's license. If you don't have one yet, bring your out-of-state license or passport. If you're registering a vehicle in someone else's name (such as a business or family member), bring a power of attorney or written authorization signed by the owner.

How to register at your town clerk's office

Visit your town clerk's office in person with your documents. Hours vary by town, but most are open Monday through Friday during standard business hours. Some towns offer extended hours one evening per week. You can find your town clerk's contact information and hours on your town's website or by calling town hall.

At the clerk's office, complete the vehicle registration form (Form H-23 in Connecticut). The clerk will verify your documents, calculate your registration fee based on your vehicle's weight and your town's rate, and issue your registration certificate and license plates on the spot or within a few days if plates must be ordered.

If you're registering a vehicle with a lien (financed through a bank or credit union), the lender's name will already appear on the title. The clerk will note this on your registration. You'll receive the registration certificate, but the lender holds the title until you pay off the loan.

Online and mail renewal for existing registrations

If you already have a Connecticut registration and are renewing it, you can renew online through the Connecticut DMV portal without visiting your town clerk. Online renewal is available if your vehicle has no outstanding violations, your insurance is current, and you're not changing vehicle information. The online system will calculate your fee and allow you to pay by credit or debit card.

You can also renew by mail. Your town clerk will send you a renewal notice before your registration expires. Complete the form, include your payment, and mail it back to the clerk's office. Mail renewal typically takes one to two weeks to process, so send it at least three weeks before your expiration date.

Renew during your birthday month — that's when your registration expires. If you miss the important date, you can still renew, but you may owe a late fee. Connecticut does not charge a separate late fee for registration, but driving with an expired registration is illegal and can result in a traffic ticket.

Special registration types and situations

Connecticut offers several registration options beyond standard passenger vehicle registration. If you own a commercial vehicle or truck over a certain weight, you may need a commercial registration, which has different fees and requirements. Antique vehicles (typically 20 years or older) can register for a lower fee under Connecticut's antique vehicle program, though they have mileage restrictions.

If you're registering a vehicle you inherited, you'll need the title transferred to your name through probate court or through a simplified transfer process if the estate is small. Bring the death certificate and court documents to your town clerk along with your other registration documents.

If you're registering a vehicle with an out-of-state title, your town clerk will handle the transfer. Bring the out-of-state title, your bill of sale if applicable, and proof of insurance. Connecticut will issue you a new Connecticut title and registration.

License plates and replacement

Connecticut issues standard white and blue license plates with your registration. When you register a new vehicle, the clerk will either issue plates when ready or order them to be mailed to you within a few days. Keep your registration certificate with you while you wait for plates to arrive.

If your plate is lost, stolen, or damaged, contact your town clerk to request a replacement. You'll pay a replacement fee (typically $10 to $15) and receive a new plate. If your plate is stolen, file a police report first and bring the report number to the clerk's office.

Connecticut does not currently offer personalized or vanity plates through the standard registration process, though some towns may have historical or special plates available. Ask your town clerk if your town participates in any specialty plate programs.

What happens if you don't register

Driving an unregistered vehicle in Connecticut is illegal. If you're stopped by police, you can receive a traffic ticket, typically for operating an unregistered motor vehicle. The fine varies but can range from $100 to several hundred dollars depending on how long the vehicle has been unregistered.

If you purchase a vehicle and don't register it within 10 days, your insurance company may cancel your policy, leaving you uninsured. An uninsured vehicle cannot legally be driven, and driving without insurance carries separate penalties including fines and license suspension.

If you move to Connecticut from another state, you have 10 days to register your vehicle. During that 10-day window, you can drive with your out-of-state registration and insurance. After 10 days, you must have Connecticut registration.

Frequently Asked Questions

Can I register my car online if I just moved to Connecticut?

No, new registrations must be done in person at your town clerk's office. Online registration is only for renewing existing Connecticut registrations. Bring your title, proof of insurance, and ID to your town clerk within 10 days of moving to the state.

What if my vehicle title has a lien on it?

You can still register the vehicle. The lender's name appears on the title as lienholder, and the clerk will note this on your registration. You'll receive the registration certificate, but the lender holds the title until you pay off the loan. Once paid, contact your lender to have them release the title to you.

How much does registration cost in Connecticut?

Fees vary by town and vehicle weight. A standard passenger car typically costs $120 to $180 for two years. Your town clerk can tell you the exact fee for your vehicle. You'll also pay a $5.50 agent fee if you register through a private agent instead of the town clerk.

What do I do if I buy a used car from a private seller?

Get a bill of sale signed by both you and the seller, and have the seller sign the back of the title transferring ownership to you. Bring both documents, along with proof of insurance and your ID, to your town clerk to register the vehicle in your name.

Can I renew my registration if it's already expired?

Yes, you can renew an expired registration at your town clerk's office. Connecticut does not charge a separate late fee for registration renewal, but driving with an expired registration is illegal. Renew as soon as possible to avoid a traffic ticket.