Clayton Sales Tax Calculator
The combined sales tax rate in Clayton, California is 8.75% in 2026 — a 7.25% California state rate plus 1.5% in local add-ons. That is the 235th lowest rate of the 483 California cities we track, and it runs below California's 8.98% average. On a $100 purchase that's $8.75 in tax for a $108.75 total.
$100.00 total
Before tax: $100.00 · Sales tax: $0.00 (0%)
State & average combined rates: Tax Foundation 2026. Local rates vary by city/county — adjust the rate for an exact figure. How we calculate →
Clayton sales tax rate in 2026
Clayton charges a combined sales tax rate of 8.75%: the California statewide base of 7.25% plus 1.5% in city, county and district add-ons. Clayton is in Contra Costa County.
That local add-on is set by Clayton and the taxing districts that overlap it, which is why neighboring cities in California can charge a different total even a few miles apart.
Clayton vs the rest of California
At 8.75%, Clayton runs below California's 8.98% statewide average combined rate by 0.23%. Among the 483 California cities we track by combined rate, Clayton ranks the 235th lowest.
That makes Clayton comparatively light on sales tax for California, though it's still well above zero.
Sales tax examples in Clayton
At Clayton's 8.75% combined rate:
$100 → $8.75 tax, $108.75 total · $1,000 → $87.50 tax, $1,087.50 total · $25,000 car purchase → $2,187 tax, $27,187 total.
Working backwards: a $1,090.00 receipt total in Clayton means the pre-tax price was $1,002.30 and $87.70 was tax — use “Remove tax” mode above to reverse any total instantly.
A note on Clayton's exact rate
The 8.75% rate applies within Clayton's official city limits as published by CDTFA — Find a Sales and Use Tax Rate. Addresses with a Clayton mailing address but outside the incorporated city line — a common situation on the edges of any city — can fall under a different, usually lower, rate.
For an address-exact rate, use the official lookup tool: CDTFA — Find a Sales and Use Tax Rate. This calculator pre-fills the published city-limits rate as a reliable starting point.
Clayton sales tax — frequently asked questions
What is the sales tax rate in Clayton, California?
Clayton's combined sales tax rate is 8.75% in 2026 — 7.25% California state tax plus 1.5% in local add-ons. That's the 235th lowest rate of the 483 California cities we track.
How much is sales tax on $100 in Clayton?
At Clayton's 8.75% rate, sales tax on a $100 purchase is $8.75, for a $108.75 total.
How much sales tax will I pay on a $25,000 car in Clayton?
At Clayton's 8.75% combined rate, sales tax on a $25,000 vehicle purchase is about $2,187, for a $27,187 total before any trade-in credit or registration fees.
Is Clayton's sales tax higher or lower than the California average?
Clayton runs below California's 8.98% statewide average by 0.23%, ranking the 235th lowest of the 483 California cities we track.
How do I calculate sales tax backwards from a total in Clayton?
Divide the total by 1 plus the rate. A $1,090.00 total in Clayton works back to a $1,002.30 pre-tax price and $87.70 of tax. Use “Remove tax” mode above to do this automatically.
Does Clayton's sales tax rate apply everywhere in the Clayton area?
The 8.75% rate applies within Clayton's official city limits. Nearby addresses outside the incorporated boundary can be taxed at a different rate — check CDTFA — Find a Sales and Use Tax Rate for an address-exact figure.
Compare nearby cities in California
See all 483 California cities ranked by combined sales tax rate, or compare:
Researched & verified by the Calcuris Data & Research Team. How we build and check our tools →