Tumwater, Washington sales tax rate: 9.8%
Last updated Checked monthly
The sales tax rate in Tumwater, Washington is 9.8%. That’s the 6.5% state rate plus 3.3% in local taxes. It’s higher than 82 of the 110 Washington cities we checked.
Calculated by the 
Sales Tax APIThe same engine Zamp customers use.Tumwater combined rate
9.8%
- Washington state
- 6.5%
- Thurston CountyCounty
- 1.9%
- TumwaterCity
- 0.2%
- Thurston PTBASpecial district
- 1.2%
Tumwater sales tax calculator
Enter a price and what you’re selling.
- WashingtonState · 6.5%$6.50
- Thurston CountyCounty · 1.9%$1.90
- Tumwater City (Thurston County)City · 0.2%$0.20
- Thurston PTBASpecial district · 1.2%$1.20
Charging this at checkout? Zamp calculates it on every order and files the returns.
Book a demoTumwater sales tax rate breakdown
State, county, city and special district taxes add up to 9.8%. District lines don’t follow city limits, so some Tumwater addresses pay a different rate.
| Jurisdiction | Type | Rate |
|---|---|---|
| State of Washington | State | 6.5% |
| Thurston County | County | 1.9% |
| Tumwater City (Thurston County) | City | 0.2% |
| Thurston PTBA | Special district | 1.2% |
| Combined rate | 9.8% |
Rate history
- July 20239.5%
- July 20249.7%
- July 20259.7%
- July 20269.8%
- Today9.8%
Changed since July 2023.
Sales tax near Tumwater
Closest cities
- Tenino10 mi8.4%
- Rainier13 mi8.4%
- Oakville18 mi8.9%
- Steilacoom20 mi10.2%
- Lakewood22 mi10.3%
- Chehalis23 mi8.4%
- University Place23 mi10.2%
- Fircrest25 mi10.2%
Charge the right rate in Tumwater, 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.
Tumwater 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 Tumwater, Washington?
The combined sales tax rate in Tumwater is 9.8% as of November 2, 2026. It’s made up of 6.5% Washington state tax, 1.9% Thurston County, 0.2% Tumwater City (Thurston County), 1.2% Thurston PTBA.
Why does Tumwater pay Thurston PTBA tax?
A special district such as Thurston 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 Tumwater’s 98511 ZIP code; the calculator prices any exact address.
Is SaaS taxable in Tumwater?
Yes, at the full 9.8%.
Do online sellers have to collect sales tax in Tumwater?
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 Tumwater’s 98511 ZIP code. Rates are checked monthly and are for information, not tax advice.
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