What You Need to Register an Out-of-State Car in California

To register an out-of-state car in California, you have 20 days from the day you become a California resident to bring the DMV your out-of-state title and registration, a completed Application for Title or Registration (REG 343), proof of California insurance, a VIN verification, and a smog certificate for most vehicles, and to pay registration fees plus any use tax owed on the vehicle.¹ Budget for more than DMV fees. If you bought the car recently out of state, the use tax alone can run into the thousands.

The 20-Day Deadline

California requires you to register any vehicle primarily used in the state, and the clock starts the moment you become a resident. You get 20 days.¹ There is no grace period, and penalties begin the day after.

Residency is triggered by things like taking a job in California, renting or buying a primary home here, registering to vote, paying resident tuition, or simply being present in the state for six months or more within a 12-month period.¹ Any one of these can start the 20 days. You also have to apply for a California driver’s license once you establish residency and intend to drive.

Documents to Bring

Gather everything before your DMV visit. One missing item means another trip.

The completed REG 343 application, signed by every registered owner. If the car is leased, the lessor must also sign.²
Your out-of-state title. If you don’t surrender it, your California registration card will be marked “Nontransferable” and the state will not issue you a title.²
Your out-of-state registration, a renewal notice, or a letter from the previous state confirming the registered owner’s name and the expiration date.²
Proof of California insurance from a California-licensed insurer.³
A valid government-issued photo ID.
Payment for all fees and any use tax.

If an out-of-state bank or lender holds your physical title, contact them before your DMV appointment. Some lenders mail the title directly to the California DMV. Others release their lien on a notarized Lien Satisfied/Legal Owner/Title Holder Release (REG 166).² This step takes time, so start it as soon as you know you’re moving.

VIN Verification

Every out-of-state vehicle has to be physically inspected so someone can confirm the Vehicle Identification Number matches the paperwork. The inspector also checks the engine number, odometer reading, and federal safety compliance label, and records all of it on a Verification of Vehicle (REG 31) form.⁴

Authorized verifiers include DMV employees, peace officers, auto club employees who provide registration services, and DMV-licensed private verifiers.⁴ If you’re bringing the car to the DMV office anyway, the verification can be done there. Otherwise, have a licensed verifier complete the REG 31 ahead of time.

Smog Check

Most cars need to pass a California smog check before they can be registered. The requirement covers gasoline, hybrid, and alternative-fuel vehicles from model year 1976 and newer, and diesel vehicles from model year 1998 and newer with a gross vehicle weight rating of 14,000 pounds or less.⁵

You don’t need a smog check for:

Electric vehicles
Motorcycles
Gasoline vehicles from model year 1975 and older
Diesel vehicles from model year 1997 and older
Diesel vehicles weighing more than 14,000 pounds

One thing to know: the exemption that lets newer gasoline cars (less than eight model years old) skip the smog check at renewal does not apply to initial registration. Even a nearly new car coming in from another state needs a smog certificate the first time around.⁵

The test has to be done at a certified California smog station. Statewide averages run roughly $55 to $75 depending on the station and equipment, plus an $8.25 certificate fee the station collects.⁶ A failed test means repairs and a retest before you can finish registration.

The 7,500-Mile Rule for Newer Vehicles

This one catches people. If your car has fewer than 7,500 miles on the odometer when you bring it into California, the state treats it as a “new motor vehicle” for emissions purposes. It has to be California Air Resources Board (CARB) certified, not just federally certified. A so-called 49-state vehicle that only meets federal emissions standards can be refused California registration under this rule.⁷

There are exceptions. You can register a federally certified vehicle under 7,500 miles if:⁸

You were a resident of another state (or on active military duty there) when you acquired the vehicle, and it was last registered in that state.
You inherited the vehicle or received it in a divorce or legal separation.
You bought the vehicle out of state to replace a California-registered car that was damaged beyond repair or stolen while you were traveling.

Claiming an exception means completing a Statement of Facts for California Non-Certified Vehicles (REG 256F) with supporting documentation.⁸ Most new residents bringing a car they’ve been driving will fit the first exception. But if you flew to another state specifically to pick up a low-mileage vehicle with only federal certification, you could have a real problem registering it here.

Use Tax on the Vehicle

This is the cost most people don’t expect. If you bought your car outside California and haven’t already paid California sales tax on it, you owe California use tax at the time of registration. The DMV collects it.⁹

The use tax rate matches the sales tax rate where you live. California’s statewide base is 7.25%, and local add-ons push the actual rate higher in most areas.¹⁰ It applies to the full purchase price.

If you paid sales tax to another state when you bought the car, California gives you a dollar-for-dollar credit for that payment. Pay $1,500 to your previous state and owe California $2,000, and you’ll pay the $500 difference.⁹ Bring your purchase receipt and proof of tax paid.

Timing matters. If you bought the car out of state and bring it into California within 12 months of the purchase date, the state presumes you bought it for use here and will charge use tax. You can rebut that presumption with documentation showing the car was genuinely used elsewhere first. If you owned and registered the vehicle in another state for more than 12 months before bringing it in, the standard use tax presumption does not apply.¹¹

Registration Fees

On top of use tax, you’ll pay several DMV fees:

Registration fee of $76, which includes a $3 alternative fuel/technology fee.¹²
California Highway Patrol fee of $34.¹³
Vehicle License Fee (VLF) of 0.65% of your vehicle’s market value, which decreases over the first 11 years following a depreciation schedule.¹²
Transportation Improvement Fee from $33 to $231 based on vehicle value. A car under $5,000 pays $33; one worth $60,000 or more pays $231.¹²
County and district fees that vary by location.
Smog-related fees including an $8 smog transfer fee and a $20 smog abatement fee in certain situations.¹³

For a mid-value vehicle around $15,000, DMV fees (excluding use tax) typically run $300 to $400. A newer car worth $40,000 or more can push past $500 once the VLF and TIF scale up. The DMV website has a fee calculator for a precise estimate.

Penalties If You Miss the Deadline

Miss the 20-day window and penalties start right away on two tracks: a flat delinquency fee and a percentage penalty on the VLF.¹⁴

For a vehicle never previously registered in California, the VLF-based penalties are:

One year or less late: 40% of the VLF owed
More than one year but two years or less: 80% of the VLF owed
More than two years late: 160% of the VLF owed

On top of those, a flat penalty applies to the delinquent registration fee itself: $30 up to one year, $50 for one to two years, and $100 for more than two years.¹⁵ On a vehicle of any real value, the 40% VLF hit alone makes meeting the deadline worth some effort.

Military Members Stationed in California

If you’re on active duty, stationed in California, and keep legal residency in another state, you don’t have to register personal vehicles here as long as they carry valid plates from your home state or last duty-station state and you have insurance.¹⁶ The exemption covers a spouse’s vehicle too, but not commercial vehicles used for compensation.

If you choose to register in California while stationed here, you can claim an exemption from the Vehicle License Fee by filing a Nonresident Military Exemption Statement (REG 5045), which saves a meaningful amount since the VLF tracks the vehicle’s value.¹⁶ Once you’re discharged and settle in California, the 20-day deadline begins when you accept employment or otherwise become a resident.

1
State of California Department of Motor Vehicles. New to California
2
California DMV. How To Register a Vehicle From Out of State
3
California Legislative Information. California Vehicle Code 16020
4
State of California Department of Motor Vehicles. Vehicle Industry Registration Procedures Manual – Vehicle Verifications
5
Bureau of Automotive Repair. Smog Check: When You Need One and Whats Required
6
Bureau of Automotive Repair. Smog Check Executive Summary Report June 2025
7
Cornell Law School – Legal Information Institute. 13 CCR 151.00 – Refusal of Registration
8
State of California Department of Motor Vehicles. California Noncertified/Direct Import Vehicle Exemptions
9
California Department of Tax and Fee Administration. Tax Guide for Purchasers of Vehicles
10
California Department of Tax and Fee Administration. California City and County Sales and Use Tax Rate Information
11
State of California Department of Motor Vehicles. Transactions Subject to Use Tax
12
State of California Department of Motor Vehicles. Registration Fees
13
State of California Department of Motor Vehicles. Appendix 1F – Fees
14
State of California Department of Motor Vehicles. Penalties
15
Justia. California Code, Vehicle Code, Article 4 – Payment Of Fees
16
California Department of Motor Vehicles. Vehicle Information for Military Personnel in California