Coulee Dam Sales Tax Calculator
The combined sales tax rate in Coulee Dam, Washington is 8% in 2026 — a 6.5% Washington state rate plus 1.5% in local add-ons. That is the 51st lowest rate of the 280 Washington cities we track, and it runs below Washington's 9.47% average. On a $100 purchase that's $8.00 in tax for a $108.00 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 →
Coulee Dam sales tax rate in 2026
Coulee Dam charges a combined sales tax rate of 8%: the Washington statewide base of 6.5% plus 1.5% in city and county add-ons. Coulee Dam is in Okanogan County.
That local add-on is set by Coulee Dam and the taxing districts that overlap it, which is why neighboring cities in Washington can charge a different total even a few miles apart.
Coulee Dam vs the rest of Washington
At 8%, Coulee Dam runs below Washington's 9.47% statewide average combined rate by 1.47%. Among the 280 Washington cities we track by combined rate, Coulee Dam ranks the 51st lowest.
That makes Coulee Dam comparatively light on sales tax for Washington, though it's still well above zero.
Sales tax examples in Coulee Dam
At Coulee Dam's 8% combined rate:
$100 → $8.00 tax, $108.00 total · $1,000 → $80.00 tax, $1,080.00 total · $25,000 car purchase → $2,000 tax, $27,000 total.
Working backwards: a $1,080.00 receipt total in Coulee Dam means the pre-tax price was $1,000.00 and $80.00 was tax — use “Remove tax” mode above to reverse any total instantly.
A note on Coulee Dam's exact rate
The 8% rate applies within Coulee Dam's official city limits as published by Washington DOR — Tax Rate Lookup. Addresses with a Coulee Dam 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: Washington DOR — Tax Rate Lookup. This calculator pre-fills the published city-limits rate as a reliable starting point.
Coulee Dam sales tax — frequently asked questions
What is the sales tax rate in Coulee Dam, Washington?
Coulee Dam's combined sales tax rate is 8% in 2026 — 6.5% Washington state tax plus 1.5% in local add-ons. That's the 51st lowest rate of the 280 Washington cities we track.
How much is sales tax on $100 in Coulee Dam?
At Coulee Dam's 8% rate, sales tax on a $100 purchase is $8.00, for a $108.00 total.
How much sales tax will I pay on a $25,000 car in Coulee Dam?
At Coulee Dam's 8% combined rate, sales tax on a $25,000 vehicle purchase is about $2,000, for a $27,000 total before any trade-in credit or registration fees.
Is Coulee Dam's sales tax higher or lower than the Washington average?
Coulee Dam runs below Washington's 9.47% statewide average by 1.47%, ranking the 51st lowest of the 280 Washington cities we track.
How do I calculate sales tax backwards from a total in Coulee Dam?
Divide the total by 1 plus the rate. A $1,080.00 total in Coulee Dam works back to a $1,000.00 pre-tax price and $80.00 of tax. Use “Remove tax” mode above to do this automatically.
Does Coulee Dam's sales tax rate apply everywhere in the Coulee Dam area?
The 8% rate applies within Coulee Dam's official city limits. Nearby addresses outside the incorporated boundary can be taxed at a different rate — check Washington DOR — Tax Rate Lookup for an address-exact figure.
Compare nearby cities in Washington
See all 280 Washington cities ranked by combined sales tax rate, or compare:
Researched & verified by the Calcuris Data & Research Team. How we build and check our tools →