California Use Tax on a Private-Party Car Purchase

When you buy a used car from a private seller in California, you don't pay sales tax to the seller. You pay use tax to the DMV when you register the car in your name. It works out to the same rate as sales tax at your address, and it's calculated on the purchase price. The rate that matters is the one where you live and register the car, not where the seller lives or where you picked up the car.

So if you live in Irvine and buy a car from someone in Santa Ana, you pay Irvine's rate (7.75% as of October 1, 2026), not Santa Ana's (9.25%). Rates change, so check CDTFA's rate lookup at https://www.cdtfa.ca.gov/ before you budget.

Sales tax vs. use tax: why the name changes

California's sales tax is collected by businesses that sell goods. A private individual selling their own car isn't a retailer, so no sales tax applies to the sale. Use tax fills that gap: it's owed by the buyer when the item is used in California and sales tax wasn't collected. For vehicles, the DMV collects it at registration, so you can't really skip it. The car can't be registered in your name until it's paid.

Dealers are different. They collect sales tax at the sale, based on your address and its district taxes, and pass it on to the state.

How the DMV calculates what you owe

1. The purchase price you report, typically from the title transfer and bill of sale.
2. Your address determines the rate, including any city or district add-ons.
3. Use tax = price x rate, collected along with the transfer and registration fees.

Here's how that plays out with a hypothetical $12,000 private-party purchase, for illustration only:

Rates change, so check CDTFA's rate lookup. The full city list is in our Orange County used car sales tax guide.

Report the real price

It's tempting for a buyer and seller to write a lower price on the paperwork. Don't. Misstating the purchase price to reduce tax is illegal, and the DMV can question prices that look unrealistically low for the vehicle. A clear, signed California bill of sale (REG 135) with the actual price is your best documentation, and it helps if you're ever asked to explain the number.

If you genuinely got a great deal, for example because the car needs repairs, keep notes, photos or estimates that explain it.

When use tax may not apply

Some private transfers can be exempt from use tax, usually documented with a REG 256 Statement of Facts. Check the DMV's rules for your case:

• Family transfers between parents and children, grandparents and grandchildren, and spouses or domestic partners.
• Genuine gifts, where nothing is paid.
• Certain other situations listed on REG 256. The DMV form and instructions describe them.

A family sale with money involved is not a gift. Our guide to gifting a car to family in California explains the difference and the related smog rules.

Cars bought out of state

If you buy a car in another state and bring it to California, use tax can still apply, often with credit for sales tax you paid elsewhere. Whether it applies depends on details like when you bought the car and when it came to California. Check with the DMV and CDTFA before assuming you're exempt. See registering an out-of-state car in California for the rest of that process.

When you pay, and what happens if you're late

You pay use tax when you submit the transfer, which as the buyer you're supposed to do within 10 days of the purchase. Late transfer penalties can apply on top of the tax. Don't sit on the paperwork, especially if you're also waiting on a smog certificate or lien release. Our guide on California DMV late fees covers what can add up.

Budgeting a private-party purchase

A realistic private-party budget includes:

• The price you agreed on.
• Use tax at your local rate.
• DMV fees: transfer fee (commonly cited as $15), plus registration-related fees that depend on the car and timing. See California registration fees explained.
• A smog transfer fee for cars 4 or fewer model years old (older cars need a smog certificate from the seller instead).
• An independent inspection before you buy.
• Insurance from the day you take the car.

For the step-by-step on title, registration and deadlines, see the California DMV guide for used car buyers.

Buying from us works the same way at the DMV

At Irvine Used Cars, listed prices don't include DMV taxes and fees. You get the signed title, smog certificate and bill of sale, then handle registration and pay the tax and fees at the DMV, so the math above applies. You can view our current inventory and ask for the CARFAX on any car.

Frequently asked questions

Do I pay sales tax to a private seller in California?

No. The seller doesn't collect tax. You pay use tax to the DMV when you register the car in your name, at the rate for your address.

Can the DMV charge use tax on more than what I paid?

The tax is based on the purchase price you report, but the DMV can question a price that looks far below what the vehicle is worth. Keep a signed bill of sale and any evidence that supports a low price, such as repair estimates.

Is use tax due if a friend gives me their car?

A genuine gift may be exempt from use tax when documented on a REG 256 Statement of Facts. If you pay anything for the car, it's a sale and use tax applies to the price.

Which rate applies if I'm moving soon?

Use the address where you'll register the car. If you're registering at a new address in another city, that city's rate applies. Make sure your DMV address is current before you submit the transfer.

Does use tax apply to electric cars bought privately?

Yes. Use tax on private-party purchases applies to EVs the same way it applies to gas cars. EVs skip smog checks, but not tax.

The takeaway

Budget your local rate, write the real price on the paperwork, and file within 10 days. Questions about a car we have listed? Call or text (516) 835-6141.