What California requires for car registration

California requires you to register your vehicle with the Department of Motor Vehicles within 10 days of purchase or moving to the state. Registration is not optional — driving an unregistered vehicle can result in fines, vehicle impound, and citations. The state issues a registration certificate (also called a reg card) and a license plate or renewal sticker that proves your vehicle is current.

Registration in California is tied to your vehicle's smog certification status, ownership documents, and proof of insurance. You cannot complete registration without proof that your vehicle meets California's emissions standards, which means either passing a smog test (for older vehicles) or being exempt based on model year. The DMV will not issue plates or a registration certificate until all three pieces are in place.

Key Takeaways

  • California requires registration within 10 days of purchase or moving to the state, and you must show proof of insurance and a passing smog test (or exemption) before the DMV will issue plates.
  • New residents have 20 days to register a vehicle already registered in another state, but out-of-state plates are not legal for daily driving in California after that period.
  • Registration renewal happens every two years for most vehicles, and you can renew online, by mail, or in person at a DMV office.
  • The DMV charges a base registration fee plus vehicle license tax based on the vehicle's value, and fees vary depending on vehicle type and weight.
  • If your registration expires, you can still renew it, but driving with expired plates is illegal and can result in fines and citations.

Registration fees and what they cover

California registration fees are not a flat amount — they include a base registration fee plus a vehicle license tax (VLT) calculated from your vehicle's value. The base fee depends on your vehicle type: passenger cars, motorcycles, and commercial vehicles each have different rates. The VLT is highest when you first register a vehicle and decreases each year for the first 11 years of ownership.

You will also pay additional fees if your vehicle requires a smog test, if you are registering a vehicle with a lien, or if you need a replacement plate. Disabled veteran plates, disabled person plates, and specialty plates (such as environmental or personalized plates) have their own fee structures. The DMV website has a fee calculator where you can enter your vehicle information to see the exact amount you will owe before you go in or submit your process.

How to register a new vehicle in California

To register a new vehicle you just purchased, gather your proof of ownership (the manufacturer's certificate of origin or title from the seller), proof of California insurance, and a passing smog test result if your vehicle requires one. Vehicles model year 1976 and newer must pass a smog test unless they are brand new or meet other exemptions. You will also need your California driver's license or ID and your Social Security number.

You can register in person at any DMV office, by mail, or through an authorized vehicle registration service (such as AAA or a local auto club). In-person registration is fastest if you have all documents ready — most offices can complete it the same day. By mail, allow two to three weeks for processing. If you use an authorized service, they handle the paperwork for you but charge a service fee on top of state registration fees.

Registering a vehicle if you moved to California from another state

If you moved to California with a vehicle already registered in another state, you have 20 days to register it with the California DMV. After 20 days, driving with out-of-state plates is illegal, even if your registration is current in the other state. You will need to surrender your out-of-state plates and obtain California plates.

Bring your current out-of-state registration, your title or proof of ownership, proof of California insurance, and a smog test result if required. If your vehicle is financed, bring the lien holder information. The DMV will calculate your California registration fee based on your vehicle's value and model year. You do not need to wait for your out-of-state registration to expire — you can register when ready upon arrival.

Renewing your California registration

California registration renews every two years. The DMV sends a renewal notice 60 days before your expiration date to the address on file. You can renew online at dmv.ca.gov if your vehicle has a clean driving record and no outstanding violations. Online renewal takes about 10 minutes and you receive your renewal sticker by mail within two weeks.

You can also renew by mail by returning the renewal notice with payment, or in person at a DMV office. Renewal by mail typically takes two to three weeks. In-person renewal is when ready if you have all documents ready. To renew, you need proof of current insurance and a passing smog test if your vehicle requires one. If your vehicle's registration has been expired for more than six months, you may need to re-register rather than renew.

Smog tests and emissions requirements

Most vehicles model year 1976 and newer must pass a smog test before initial registration and every two years at renewal. Vehicles model year 1975 and older, electric vehicles, and brand new vehicles (current model year) are exempt. Hybrid vehicles and some newer model years may also be exempt depending on their emissions rating.

You must obtain your smog test from a STAR (Smog Check Referee) station or a regular smog station certified by the California Bureau of Automotive Repair. The test costs between $30 and $70 depending on your vehicle type and the station. You cannot register your vehicle without a passing smog certificate, so plan to get tested before you visit the DMV or submit your registration by mail. If your vehicle fails, you have 30 days to repair it and retest at no additional charge at the same station.

What happens if your registration expires

Driving with expired registration is illegal in California. If you are stopped by law enforcement, you can receive a citation and fine. Your vehicle can also be impounded if registration has been expired for more than six months. However, you can still renew your registration even after it expires — there is no grace period, but the DMV will accept late renewals.

If your registration is expired, renew it as soon as possible. You will owe the renewal fee plus any late penalties. If your vehicle was impounded, you will also owe impound and storage fees to recover it. To avoid this, set a reminder when you receive your renewal notice 60 days before expiration, or sign up for DMV email reminders at dmv.ca.gov.

Frequently Asked Questions

Can I register my vehicle online in California?

You can renew an existing California registration online at dmv.ca.gov, but you cannot complete initial registration online. For a new vehicle or a vehicle new to California, you must register in person at a DMV office, by mail, or through an authorized registration service.

What if I buy a used car from a private seller in California?

You have 10 days to register it. Bring the signed title from the seller, proof of insurance, a smog test result if required, and your ID. If the title has a lien, bring lien holder information. You can register at any DMV office or by mail.

Do I need to take a smog test if I just moved to California with a newer vehicle?

It depends on the model year. Vehicles model year 1975 and older, brand new vehicles (current model year), and electric vehicles are exempt. Most other vehicles require a smog test. Check the DMV website or call your local office with your vehicle's year and make to confirm.

How much does California vehicle registration cost?

Costs vary based on vehicle type, weight, and value. The base fee ranges from about $40 to $250, plus a vehicle license tax that decreases over 11 years of ownership. Use the DMV fee calculator at dmv.ca.gov to see the exact amount for your vehicle before you register.

Can I register my vehicle if I have an outstanding traffic ticket or violation?

Yes, but if you have an unpaid traffic fine or a suspended license, the DMV may flag your account. Resolve outstanding violations with the court first to avoid delays. Contact the court that issued the ticket to pay or set up a payment plan.