California rules, verified against the statutes

Out-the-door price in California

How California works

California does not reduce the taxable price for trade-ins — you pay sales tax on the full price even with a trade.
Manufacturer rebates are taxed in CA (tax is computed before the rebate is applied). A dealer discount, by contrast, DOES lower your taxable price — that distinction is worth real money.
The doc fee is capped by law ($85 e-filing dealers / $70 otherwise) and is part of the taxable base.
Buying used? If the car's current registration is good for more than 120 days after the purchase date, renewal fees (registration, CHP, VLF, TIF) are not due at sale — check the box in the calculator and watch the estimate drop.

Rules last verified Jul 9, 2026. Our methodology.

Try it for your ZIP

Vehicle price

The negotiated (or advertised) selling price, before fees and tax.

Your ZIP code

Tax and registration follow where YOU register — not the dealership.

Condition

New Used CPO

Fuel

EV/PHEV surcharges apply in many states.

More options — trade-in, rebates, doc fee, add-ons

Trade-in value

Reduces your taxable amount only in states that allow it.

Trade-in loan payoff

Display-only in the equity math — doesn't affect tax.

Manufacturer rebate

Taxed in some states, a tax-free discount in others.

Dealer discount

Off-invoice discount from the dealer — different from a rebate for tax.

Dealer doc fee (if quoted)

Leave blank to use your state's cap or the typical amount.

Dealer add-ons total

Nitrogen, VIN etch, protection packages… labeled negotiable in the output.

F&I products total (VSC, GAP…)

Excluded from tax in some states when itemized separately.

Model year

MSRP / vehicle value

Needed in states with value-based registration (AZ VLT, NV GST).

Financing the purchase I have a plate to transfer (matters in Florida — skips the $225 initial registration) Used vehicle's registration is good for 120+ days after purchase (California — renewal fees not due at sale)

My price already includes…

Some dealers now fold fees into the advertised price (FTC pressure; California's total-price law). Check what yours covers so nothing gets counted twice.

Doc fee Emissions / smog testing charge (used vehicles)

California OTD questions, answered

Does a trade-in reduce sales tax in California?

No — California computes tax on the full purchase price even when you trade in. This surprises a lot of buyers.

Are manufacturer rebates taxed in California?

Effectively yes — tax is computed before the rebate is applied, so you pay tax on the pre-rebate price.

Is the doc fee capped in California?

Yes — the cap is $85.00 (CVC 11713.1). A dealer may not exceed it.

Doc fees in all 50 states Registration fees by state