Mount Vernon Sales Tax Calculator
The combined sales tax rate in Mount Vernon, Washington is 9% in 2026 — a 6.5% Washington state rate plus 2.5% in local add-ons. That is the 94th highest rate of the 280 Washington cities we track, and it runs below Washington's 9.47% average. On a $100 purchase that's $9.00 in tax for a $109.00 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 →
Mount Vernon sales tax rate in 2026
Mount Vernon charges a combined sales tax rate of 9%: the Washington statewide base of 6.5% plus 2.5% in city and county add-ons. Mount Vernon is in Skagit County.
That local add-on is set by Mount Vernon and the taxing districts that overlap it, which is why neighboring cities in Washington can charge a different total even a few miles apart.
Mount Vernon vs the rest of Washington
At 9%, Mount Vernon runs below Washington's 9.47% statewide average combined rate by 0.47%. Among the 280 Washington cities we track by combined rate, Mount Vernon ranks the 94th highest.
That makes Mount Vernon comparatively light on sales tax for Washington, though it's still well above zero.
Sales tax examples in Mount Vernon
At Mount Vernon's 9% combined rate:
$100 → $9.00 tax, $109.00 total · $1,000 → $90.00 tax, $1,090.00 total · $25,000 car purchase → $2,250 tax, $27,250 total.
Working backwards: a $1,090.00 receipt total in Mount Vernon means the pre-tax price was $1,000.00 and $90.00 was tax — use “Remove tax” mode above to reverse any total instantly.
A note on Mount Vernon's exact rate
The 9% rate applies within Mount Vernon's official city limits as published by Washington DOR — Tax Rate Lookup. Addresses with a Mount Vernon 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.
Mount Vernon sales tax — frequently asked questions
What is the sales tax rate in Mount Vernon, Washington?
Mount Vernon's combined sales tax rate is 9% in 2026 — 6.5% Washington state tax plus 2.5% in local add-ons. That's the 94th highest rate of the 280 Washington cities we track.
How much is sales tax on $100 in Mount Vernon?
At Mount Vernon's 9% rate, sales tax on a $100 purchase is $9.00, for a $109.00 total.
How much sales tax will I pay on a $25,000 car in Mount Vernon?
At Mount Vernon's 9% combined rate, sales tax on a $25,000 vehicle purchase is about $2,250, for a $27,250 total before any trade-in credit or registration fees.
Is Mount Vernon's sales tax higher or lower than the Washington average?
Mount Vernon runs below Washington's 9.47% statewide average by 0.47%, ranking the 94th highest of the 280 Washington cities we track.
How do I calculate sales tax backwards from a total in Mount Vernon?
Divide the total by 1 plus the rate. A $1,090.00 total in Mount Vernon works back to a $1,000.00 pre-tax price and $90.00 of tax. Use “Remove tax” mode above to do this automatically.
Does Mount Vernon's sales tax rate apply everywhere in the Mount Vernon area?
The 9% rate applies within Mount Vernon'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:
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