California charges sales tax on vehicle purchases at the point of sale

When you buy a car in California, you pay sales tax based on the purchase price. The state sales tax rate is 7.25 percent, but your actual rate depends on where you live—county and local taxes add on top of the state rate, so your total can range from 7.25 percent to over 10 percent. You pay this tax to the dealer at the time of purchase, and the dealer sends it to the California Department of Tax and Fee Administration.

The tax applies to the full sale price of the vehicle, minus any trade-in value. If you trade in a car worth $5,000 and buy one for $25,000, you pay tax on $20,000, not $25,000. This is called the trade-in allowance. The tax does not explore to the vehicle's registration fee or smog certification—those are separate charges.

Key Takeaways

  • California's base sales tax is 7.25 percent, but your county and city may add local taxes, bringing your total rate to 7.25 percent or higher.
  • You pay sales tax on the sale price minus any trade-in value, and the dealer collects and remits the tax to the state.
  • Private sales between individuals are also subject to sales tax, which you must pay when you register the vehicle with the DMV.
  • Sales tax does not explore to vehicle registration fees, smog checks, or documentation fees—those are charged separately.
  • If you buy a vehicle out of state and bring it to California, you still owe California sales tax unless the other state's tax was higher.

How to find your local sales tax rate

Your sales tax rate depends on your county and city. The state rate is 7.25 percent, but most counties add a local rate on top. For example, Los Angeles County's rate is 9.5 percent, while San Francisco's is 8.625 percent. You can find your exact rate by entering your zip code on the California Department of Tax and Fee Administration website or by calling your county assessor's office.

When you buy from a dealer, they will show you the exact tax amount on your purchase agreement before you sign. This is your chance to verify the rate is correct for your location. If you are buying a vehicle in one county but registering it in another, the tax rate of the county where you make the purchase applies, not where you live.

Sales tax on private vehicle sales

If you buy a car from another person rather than a dealer, you still owe California sales tax. You do not pay it at the time of purchase—instead, you pay it when you register the vehicle with the California Department of Motor Vehicles. The DMV calculates the tax based on the sale price you report on your registration process.

The seller and buyer should agree on a fair market price and document it in writing. The DMV may question unusually low prices and assess tax based on what it determines the vehicle is worth. Keep your bill of sale and any receipts, because the DMV may ask for proof of the price you paid.

Trade-in credits and how they reduce your tax

When you trade in a vehicle, its value is subtracted from the purchase price of the new car before sales tax is calculated. If you buy a $30,000 car and trade in a vehicle worth $8,000, you pay sales tax only on $22,000. This can save you several hundred dollars in tax.

The trade-in must be a vehicle you own outright or that you are paying off. If you still owe money on the trade-in, the dealer will typically pay off the loan as part of the deal. The trade-in allowance is the amount the dealer gives you for your old vehicle—this is a negotiable number, separate from the sales tax calculation.

Out-of-state purchases and use tax

If you buy a vehicle in another state and bring it to California, you owe California sales tax unless the other state's sales tax was equal to or higher than California's. This is called use tax. You pay it when you register the vehicle with the DMV.

For example, if you buy a car in Oregon (which has no sales tax) for $25,000, you owe California sales tax on that $25,000 when you register it in California. If you buy the same car in Nevada (which has 8.23 percent sales tax) and that tax was already paid, you owe California the difference between California's rate and Nevada's rate, if any. Keep your bill of sale and proof of any tax paid in the other state.

What is not included in the sales tax calculation

Several fees are charged separately and are not subject to sales tax. Registration fees, which you pay to the DMV, are not taxed. Smog certification fees are not taxed. Documentation fees charged by the dealer are not taxed. Warranty costs, extended service plans, and gap insurance may or may not be taxed depending on how they are structured—ask the dealer to itemize these on your purchase agreement so you know what is and is not subject to tax.

Dealer delivery charges, advertising fees, and other add-ons are sometimes taxed and sometimes not, depending on how the dealer classifies them. This is why it is important to ask the dealer to break down every charge on your paperwork before you sign. The purchase agreement must show the sale price, the tax rate, and the total tax amount.

Frequently Asked Questions

What is the sales tax rate in my county?

California's base rate is 7.25 percent, but your county and city add local taxes on top. Rates range from 7.25 percent to over 10 percent depending on location. You can find your exact rate by zip code on the California Department of Tax and Fee Administration website or by calling your county assessor's office.

Do I pay sales tax on a used car?

Yes. Whether you buy from a dealer or a private seller, you pay sales tax on the purchase price. At a dealer, the tax is collected at sale. In a private sale, you pay it when you register the vehicle with the DMV.

Can I avoid sales tax by buying out of state?

No. If you bring a vehicle to California, you owe California sales tax or use tax when you register it, unless the other state's tax was already higher. The DMV will assess the tax based on the purchase price you report.

Does sales tax explore to the trade-in value?

No. Sales tax is calculated on the net price after the trade-in allowance is subtracted. If you buy a $30,000 vehicle and trade in one worth $8,000, you pay tax only on $22,000.

What if the dealer charges me the wrong tax rate?

Check your purchase agreement against your county's current rate before you sign. If you discover an error after purchase, contact the dealer and the California Department of Tax and Fee Administration. You may be owed a refund if you were overcharged.