Westchester Sales Tax Calculator
The combined sales tax rate in Westchester, Illinois is 10.25% in 2026 — a 6.25% Illinois state rate plus 4% in local add-ons. That is the 36th highest rate of the 122 Illinois cities we track, and it runs above Illinois's 8.92% average. On a $100 purchase that's $10.25 in tax for a $110.25 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 →
Westchester sales tax rate in 2026
Westchester charges a combined sales tax rate of 10.25%: the Illinois statewide base of 6.25% plus 4% in city and county add-ons. Westchester is in Cook County.
That local add-on is set by Westchester and the taxing districts that overlap it, which is why neighboring cities in Illinois can charge a different total even a few miles apart.
Westchester vs the rest of Illinois
At 10.25%, Westchester runs above Illinois's 8.92% statewide average combined rate by 1.33%. Among the 122 Illinois cities we track by combined rate, Westchester ranks the 36th highest.
That puts Westchester on the higher end for Illinois — worth double-checking against the official lookup tool if you're quoting a price to a customer or filing a return.
Sales tax examples in Westchester
At Westchester's 10.25% combined rate:
$100 → $10.25 tax, $110.25 total · $1,000 → $102.50 tax, $1,102.50 total · $25,000 car purchase → $2,563 tax, $27,563 total.
Working backwards: a $1,100.00 receipt total in Westchester means the pre-tax price was $997.73 and $102.27 was tax — use “Remove tax” mode above to reverse any total instantly.
A note on Westchester's exact rate
The 10.25% rate applies within Westchester's official city limits as published by Illinois DOR — Tax Rate Finder. Addresses with a Westchester 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: Illinois DOR — Tax Rate Finder. This calculator pre-fills the published city-limits rate as a reliable starting point.
Westchester sales tax — frequently asked questions
What is the sales tax rate in Westchester, Illinois?
Westchester's combined sales tax rate is 10.25% in 2026 — 6.25% Illinois state tax plus 4% in local add-ons. That's the 36th highest rate of the 122 Illinois cities we track.
How much is sales tax on $100 in Westchester?
At Westchester's 10.25% rate, sales tax on a $100 purchase is $10.25, for a $110.25 total.
How much sales tax will I pay on a $25,000 car in Westchester?
At Westchester's 10.25% combined rate, sales tax on a $25,000 vehicle purchase is about $2,563, for a $27,563 total before any trade-in credit or registration fees.
Is Westchester's sales tax higher or lower than the Illinois average?
Westchester runs above Illinois's 8.92% statewide average by 1.33%, ranking the 36th highest of the 122 Illinois cities we track.
How do I calculate sales tax backwards from a total in Westchester?
Divide the total by 1 plus the rate. A $1,100.00 total in Westchester works back to a $997.73 pre-tax price and $102.27 of tax. Use “Remove tax” mode above to do this automatically.
Does Westchester's sales tax rate apply everywhere in the Westchester area?
The 10.25% rate applies within Westchester's official city limits. Nearby addresses outside the incorporated boundary can be taxed at a different rate — check Illinois DOR — Tax Rate Finder for an address-exact figure.
Compare nearby cities in Illinois
See all 122 Illinois cities ranked by combined sales tax rate, or compare:
Researched & verified by the Calcuris Data & Research Team. How we build and check our tools →