San Diego County, CA Car Sales Tax & Registration (2026)
In San Diego County, the vehicle use tax is 7.75% countywide, rising to about 8.75% in some cities — charged on a vehicle purchase at your registration address. Registration base fees ($46 + $32 CHP + a Vehicle License Fee of 0.65% of value) are the same statewide. Smog check is required in most of San Diego County, though certain rural ZIP codes are exempt.
Verified July 2026 from official sources. How we verify fees.
What you'll pay in San Diego County
- Vehicle use tax: 7.75% (up to 8.75% in some cities)
- Registration (statewide): $46 + $32 CHP
- Vehicle License Fee (statewide): 0.65% of the vehicle's value
- Smog check: required in most areas (some ZIPs exempt)
How the tax works
California charges vehicle use tax based on where you register the car, not where you buy it — so a San Diego County resident pays the San Diego rate even on an out-of-county or private-party purchase. The countywide rate is 7.75%; incorporated cities can add district taxes on top. Estimate your full cost with the California title & tax calculator.
Frequently asked questions
What is the car sales tax in San Diego County, CA?
7.75% countywide, up to about 8.75% in some cities. It's charged as use tax at your registration address.
How much is car registration in San Diego County?
Registration base fees are statewide: $46 registration + $32 CHP + a Vehicle License Fee equal to 0.65% of the vehicle's value. The county-specific part is the 7.75% use tax on a purchase.
Do I need a smog check in San Diego County?
Smog check is required in most of San Diego County, though certain rural ZIP codes are exempt. Gas vehicles 8 model years and newer, electric vehicles, and motorcycles are exempt statewide.