Mount Vernon, Washington sales tax rate: 9%
Last updated Checked monthly
The sales tax rate in Mount Vernon, Washington is 9%. That’s the 6.5% state rate plus 2.5% in local taxes. It’s higher than 60 of the 110 Washington cities we checked, and 3 other cities pay the same.
Calculated by the 
Sales Tax APIThe same engine Zamp customers use.Mount Vernon combined rate
9%
- Washington state
- 6.5%
- Skagit CountyCounty
- 1.8%
- Mount VernonCity
- 0.3%
- Skagit PTBASpecial district
- 0.4%
Mount Vernon sales tax calculator
Enter a price and what you’re selling.
- WashingtonState · 6.5%$6.50
- Skagit CountyCounty · 1.8%$1.80
- Mount Vernon City (Skagit County)City · 0.3%$0.30
- Skagit PTBASpecial district · 0.4%$0.40
Charging this at checkout? Zamp calculates it on every order and files the returns.
Book a demoMount Vernon sales tax rate breakdown
State, county, city and special district taxes add up to 9%. District lines don’t follow city limits, so some Mount Vernon addresses pay a different rate.
| Jurisdiction | Type | Rate |
|---|---|---|
| State of Washington | State | 6.5% |
| Skagit County | County | 1.8% |
| Mount Vernon City (Skagit County) | City | 0.3% |
| Skagit PTBA | Special district | 0.4% |
| Combined rate | 9% |
Rate history
- July 20238.8%
- July 20248.8%
- July 20258.8%
- July 20269%
- Today9%
Changed since July 2023.
Sales tax near Mount Vernon
Closest cities
- Anacortes15 mi8.9%
- Oak Harbor17 mi9.3%
- Arlington19 mi9.3%
- Bellingham24 mi9.2%
- Marysville24 mi9.4%
- Concrete27 mi8.7%
- Lake Stevens30 mi9.3%
- Everett32 mi9.9%
Charge the right rate in Mount Vernon, on every order.
Zamp calculates tax at each customer’s address, special districts included, then files and pays every Washington return for you, with a sales tax team you can call.
Mount Vernon sales tax questions.
Still have questions? Call us at 1-866-438-9267 or email us at support@zamp.com.
What is the sales tax rate in Mount Vernon, Washington?
The combined sales tax rate in Mount Vernon is 9% as of November 2, 2026. It’s made up of 6.5% Washington state tax, 1.8% Skagit County, 0.3% Mount Vernon City (Skagit County), 0.4% Skagit PTBA.
Why does Mount Vernon pay Skagit PTBA tax?
A special district such as Skagit PTBA levies its own sales tax on top of the state, county and city rates. District lines don’t always follow city limits, so an address a few streets away can have a different rate. This rate was calculated for the centre of Mount Vernon; the calculator prices any exact address.
Is SaaS taxable in Mount Vernon?
Yes, at the full 9%.
Do online sellers have to collect sales tax in Mount Vernon?
Yes, if they have nexus in Washington: more than $100,000 in Washington sales in the previous or current calendar year, or a physical presence in the state. They register with the Washington State Department of Revenue and charge the rate at the buyer’s address.
Sources. Washington State Department of Revenue · Zamp Sales Tax API, for the centre of Mount Vernon. Rates are checked monthly and are for information, not tax advice.
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