How to Complete the California REG 343 Application for Title or Registration

The California REG 343 form, formally the Application for Title or Registration, is what you file to put a vehicle into California’s registration system for the first time. You fill it out whether you bought a new car from a dealer, moved into the state with a vehicle registered elsewhere, or are returning a salvaged or dismantled vehicle to the road. The completed form has to reach the DMV, with fees and supporting documents, within 20 days of the date you first drive the vehicle in California, and it cannot be mailed on its own.1California DMV. Forms – California DMV

Who Uses REG 343

The DMV uses this form whenever a vehicle has no existing record in its database. That covers four situations:

  • A brand-new vehicle bought from a dealer that has never been titled anywhere. The dealer usually completes the paperwork, but you should still know what’s on the form.
  • A vehicle you brought in from another state or country. Vehicle Code Section 4300 requires you to disclose where and when it was last registered outside California and the name of the issuing agency.2California Legislative Information. California Vehicle Code 4300 – Registration of Foreign Vehicles
  • A vehicle previously reported as junked, salvaged, or dropped from DMV records that is going back on the road.
  • A specially constructed vehicle you built from a kit or assembled from parts, with no manufacturer identity of its own.

For out-of-state vehicles, the 20-day clock starts the day registration becomes due: the day you first drive the vehicle in California, start working in the state, or establish residency, whichever comes first.3California Legislative Information. California Vehicle Code 4152.5

Where to Get the Form

Download the printable PDF from the California DMV forms page at dmv.ca.gov/portal/forms, or pick up a paper copy at any field office. The form runs two pages, is designed to be completed by hand, and the DMV expects black or dark-blue ink.

Filling Out REG 343 Section by Section

The form moves from identifying the vehicle to identifying you, then captures ownership and cost. Match every entry to your supporting documents: the out-of-state title, the manufacturer’s certificate of origin, or the bill of sale. Mismatches between REG 343 and the documents behind it are one of the most common reasons the DMV sends applications back.

Section 1: Vehicle Information

Enter the Vehicle Identification Number exactly as it appears on the vehicle, usually stamped on a plate visible through the lower-left corner of the windshield or on the driver-side door jamb. Fill in make, year model, model or series, body type, and fuel type. Check the box for your vehicle type: auto, commercial, motorcycle, off-highway, trailer, or coach (which includes trucks and pickups).

Two yes/no questions at the bottom affect your fees. The first asks whether the vehicle will be used to transport people for hire, meaning taxis, limousines, and buses. The second asks whether it is a commercial vehicle at 10,001 pounds or more, or a pickup over 8,001 pounds unladen or 11,499 pounds gross vehicle weight rating. A “yes” on the commercial question also requires the number of axles and the unladen weight.

Section 2: Owner Information

Write your full legal name (last, first, middle, suffix) exactly as it appears on your driver license or California ID. Include the license number and issuing state. The form has room for up to two co-owners.

Enter your physical residence address, not a PO box, and the county where you live or where the vehicle is principally garaged. Your county determines certain local fees and the use tax district rate. A separate mailing address line is available if your mail goes somewhere else.

Section 3: Legal Owner (Lienholder)

If a bank, credit union, or finance company holds a loan on the vehicle, enter their full legal name, mailing address, and Electronic Lienholder ID number. If you own the vehicle outright with no lien, write “none.” Leaving this section blank is a common reason applications bounce back. The lienholder’s name will appear on the California Certificate of Title until the loan is paid and a lien release is processed.

Section 4: Odometer Information

Record the odometer reading at the time of purchase or as of the date you’re completing the form. Check the kilometers box if the odometer reads in kilometers. Federal law requires odometer disclosure on every ownership transfer for vehicles less than 20 model years old, starting with Model Year 2011 vehicles. Model Year 2010 and older vehicles follow the previous 10-year window and are now exempt.4National Highway Traffic Safety Administration. Consumer Alert: Changes to Odometer Disclosure Requirements If the odometer has rolled past its mechanical limits or doesn’t reflect actual mileage, check the discrepancy box and explain.

Section 5: Date Information

This section fixes the dates that set your deadline and tax calculation. Fill in:

  • The date the vehicle entered or will enter California.
  • The date it was first operated in California, which triggers the 20-day clock.
  • The date you began working in California, obtained a California driver license, or became a resident.
  • The date you purchased or acquired the vehicle, with checkboxes for new or used and whether the purchase happened inside or outside California.

Be precise. Buying a vehicle out of state six months before moving to California produces a different tax calculation than buying it the week you arrive.

Section 6: Cost Information

Report how you got the vehicle and its value. There are three options: purchase (enter the price you paid), gift (enter current market value), or trade (enter the value at the time of trade). The figure drives your use tax, so the DMV compares it against standard valuation guides and may push back on a number that looks suspiciously low.

Documents to Bring With the Form

REG 343 does not travel alone. The packet depends on your situation, but a few items are nearly always required.

Title or Certificate of Origin

For an out-of-state vehicle, bring the original title from the last state of registration. For a brand-new vehicle, bring the Manufacturer’s Certificate of Origin or Manufacturer’s Statement of Origin. If your lender holds the title, contact them early; releasing or forwarding a title can take weeks.

Smog Certification

Most gasoline-powered vehicles need a valid smog certification from a licensed station before the DMV will process your registration. Several categories are exempt:

  • Gasoline-powered vehicles less than eight model years old.
  • Electric vehicles.
  • Diesel-powered vehicles from 1997 or older model years, or with a gross vehicle weight over 14,000 pounds.
  • Natural gas vehicles weighing more than 14,000 pounds.
  • Gasoline-powered vehicles from 1975 or older model years, including motorcycles and trailers.
5California DMV. Smog Inspections

Smog check prices aren’t regulated, so shop around. If the vehicle fails, you’ll need repairs and a passing retest before the DMV will accept your application.

VIN Verification

Out-of-state vehicles and vehicles not currently in the DMV database typically require a physical VIN verification using Form REG 31 (Verification of Vehicle). A DMV employee inspects the vehicle to confirm the VIN matches your paperwork and that smog equipment is present. This happens at the field office during your appointment, which is why you generally cannot complete an original registration entirely by mail.

Weight Certificate for Commercial Vehicles

The weight certificate rules are counterintuitive. A certified public weighmaster’s certificate may be required for commercial vehicles with an unladen weight of 10,000 pounds or less, and for new commercial vehicles weighing 8,001 pounds or more sold by California dealers. Vehicles over 10,001 pounds can often use an estimated unladen weight instead, so the heaviest rigs frequently don’t need the certificate.6California DMV. Weight Certificate7California Department of Motor Vehicles. Vehicle Industry Registration Procedures Manual – Weight Exceptions

Where to Submit the Form

Most first-time registrations require an in-person visit to a DMV field office because of the VIN verification. Schedule an appointment through dmv.ca.gov/portal/appointments; walking in without one can mean hours of waiting.

At the office, a DMV employee physically inspects the vehicle, verifies the VIN against your documents, and reviews your packet. Bring REG 343, the out-of-state title or certificate of origin, the smog certificate if applicable, proof of insurance, and payment. DMV offices accept checks, cash, and in most locations debit and credit cards.

Some DMV business partners, including certain AAA offices, can process vehicles with out-of-state titles or Manufacturer’s Statements of Origin.8California DMV. AAA San Diego Branch Specially constructed vehicles, salvage rebuilds, and anything requiring CHP inspection still have to go through a DMV field office.

Fees and Use Tax

The base registration fee is $76, which includes the Alternative Fuel/Technology fee.9California DMV. Registration Fees Added charges stack on top: a vehicle license fee based on the vehicle’s value, smog abatement fees, county and district fees, and weight fees for commercial vehicles. Most passenger vehicle owners should plan for a total somewhere in the low hundreds at minimum.

Use tax is often the larger cost. California charges use tax on vehicles brought in from out of state at the same rate as state sales tax: a statewide floor of 7.25%, plus local district taxes that vary by registration location.10California Department of Tax and Fee Administration. California City and County Sales and Use Tax Rate Information District taxes run from 0.10% to 2.00%, and some areas stack more than one. The tax applies to the full purchase price, including any trade-in value or loan balance you assumed.11California Department of Tax and Fee Administration. Tax Guide for Purchasers of Vehicles

If you received the vehicle as a gift from a family member, the use tax may be reduced or waived depending on the relationship. Active-duty military personnel stationed in California may also qualify for a vehicle license fee exemption. Ask the DMV representative about these when you submit.

The 20-Day Deadline and Late Penalties

Missing the 20-day window triggers penalties that scale with how late you are. For vehicles never previously registered in California (the most common REG 343 scenario), penalties are a percentage of the vehicle license fee and weight fee owed for the year:9California DMV. Registration Fees

  • One year or less late: 40% of the vehicle license fee and 40% of any weight fee.
  • More than one year but within two years: 80% of each.
  • More than two years late: 160% of each.

On a vehicle with a $500 annual license fee, registering two months late adds $200 in penalty alone. There is no grace period and no forgiveness process; the penalties attach automatically once the 20-day clock expires.

After You Submit

If the DMV accepts the application, you’ll receive your registration card and license plate stickers at the counter or shortly after. The California Certificate of Title arrives by mail in about 15 to 30 days.12California DMV. Title Transfers and Changes If you need the title faster (for example, because you plan to sell soon), the DMV offers rush title processing that cuts turnaround to 72 hours, or three business days.13California DMV. Vehicle Industry Registration Procedures Manual – Rush Title Processing

If something is wrong, the DMV returns the application. Common rejection reasons include leaving the lienholder section blank instead of writing “none,” entering a purchase price that doesn’t match the bill of sale, and submitting an expired smog certificate.

Situations That Need More Than REG 343

Some vehicles need extra paperwork or federal clearance before REG 343 alone will get them registered. If you’re in one of these categories, start on the extra steps first.

Specially Constructed Vehicles

A specially constructed vehicle (SPCNS) is one built for personal use from a kit, from new or used parts, or from a dismantled vehicle that no longer resembles the original make and model. Repairing or modifying a vehicle that remains recognizable as its original make is not SPCNS and follows standard registration.14California DMV. Specially Constructed Vehicles

Along with REG 343, SPCNS vehicles need a Statement of Construction (REG 5036), bills of sale and receipts for all major components (body, frame, transmission, engine), and a California Highway Patrol inspection to verify or assign a VIN. The first smog certification must come from a Bureau of Automotive Repair Referee Center; a regular smog shop will not do. You’ll also need an electronic Vehicle Safety Systems Inspection certificate. If you can’t produce ownership documentation for all component parts and the total value exceeds $4,999, the DMV requires a Motor Vehicle Ownership Surety Bond.

Vehicles Imported From Outside the United States

Imported vehicles need federal clearance before REG 343 ever comes into play. At the port of entry, U.S. Customs and Border Protection requires DOT Form HS-7 (safety compliance), EPA Form 3520-1 (emissions compliance), and CBP Form 7501, issued by the customs officer after processing your entry.15U.S. Customs and Border Protection. Requirements for Importing a Personal Vehicle The DMV will need CBP Form 7501 to register the vehicle.

Vehicles less than 25 years old must comply with all Federal Motor Vehicle Safety Standards, generally indicated by a manufacturer’s certification label on the driver-side door. Vehicles less than 21 years old must also meet EPA emission standards. Cars built for foreign markets rarely comply with either unless they were made specifically for U.S. export, and non-compliant vehicles must be brought into compliance, exported back out, or destroyed.16U.S. Customs and Border Protection. Importing a Motor Vehicle Vehicles 25 years or older are exempt from DOT safety standards; vehicles 21 years or older in original unmodified condition are exempt from EPA emission rules. Contact the EPA and DOT before buying abroad, because modifying a non-compliant vehicle through a Registered Importer can cost thousands and take months.

Heavy Highway Vehicles

If the vehicle has a taxable gross weight of 55,000 pounds or more, the IRS requires you to file Form 2290 (Heavy Highway Vehicle Use Tax Return) and obtain a stamped Schedule 1 as proof of payment before California will complete your registration.17Internal Revenue Service. About Form 2290, Heavy Highway Vehicle Use Tax Return E-filing is the fastest way to get Schedule 1 back. Vehicles expected to travel 5,000 miles or less during the tax period (7,500 miles for agricultural vehicles) may qualify for a suspension, but you still file the form to claim it.