Williams Sales Tax Calculator
The combined sales tax rate in Williams, California is 8.25% in 2026 — a 7.25% California state rate plus 1% in local add-ons. That is the 112th lowest rate of the 483 California cities we track, and it runs below California's 8.98% average. On a $100 purchase that's $8.25 in tax for a $108.25 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 →
Williams sales tax rate in 2026
Williams charges a combined sales tax rate of 8.25%: the California statewide base of 7.25% plus 1% in city, county and district add-ons. Williams is in Colusa County.
That local add-on is set by Williams and the taxing districts that overlap it, which is why neighboring cities in California can charge a different total even a few miles apart.
Williams vs the rest of California
At 8.25%, Williams runs below California's 8.98% statewide average combined rate by 0.73%. Among the 483 California cities we track by combined rate, Williams ranks the 112th lowest.
That makes Williams comparatively light on sales tax for California, though it's still well above zero.
Sales tax examples in Williams
At Williams's 8.25% combined rate:
$100 → $8.25 tax, $108.25 total · $1,000 → $82.50 tax, $1,082.50 total · $25,000 car purchase → $2,063 tax, $27,063 total.
Working backwards: a $1,080.00 receipt total in Williams means the pre-tax price was $997.69 and $82.31 was tax — use “Remove tax” mode above to reverse any total instantly.
A note on Williams's exact rate
The 8.25% rate applies within Williams's official city limits as published by CDTFA — Find a Sales and Use Tax Rate. Addresses with a Williams 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.
Williams sales tax — frequently asked questions
What is the sales tax rate in Williams, California?
Williams's combined sales tax rate is 8.25% in 2026 — 7.25% California state tax plus 1% in local add-ons. That's the 112th lowest rate of the 483 California cities we track.
How much is sales tax on $100 in Williams?
At Williams's 8.25% rate, sales tax on a $100 purchase is $8.25, for a $108.25 total.
How much sales tax will I pay on a $25,000 car in Williams?
At Williams's 8.25% combined rate, sales tax on a $25,000 vehicle purchase is about $2,063, for a $27,063 total before any trade-in credit or registration fees.
Is Williams's sales tax higher or lower than the California average?
Williams runs below California's 8.98% statewide average by 0.73%, ranking the 112th lowest of the 483 California cities we track.
How do I calculate sales tax backwards from a total in Williams?
Divide the total by 1 plus the rate. A $1,080.00 total in Williams works back to a $997.69 pre-tax price and $82.31 of tax. Use “Remove tax” mode above to do this automatically.
Does Williams's sales tax rate apply everywhere in the Williams area?
The 8.25% rate applies within Williams'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:
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