Sumner, Washington sales tax rate: 9.7%
Last updated Checked monthly
The sales tax rate in Sumner, Washington is 9.7%. That’s the 6.5% state rate plus 3.2% in local taxes. It’s higher than 81 of the 110 Washington cities we checked.
Calculated by the 
Sales Tax APIThe same engine Zamp customers use.Sumner combined rate
9.7%
- Washington state
- 6.5%
- Pierce CountyCounty
- 1.7%
- SumnerCity
- 0.1%
- Sound Transit RTASpecial district
- 1.4%
Sumner sales tax calculator
Enter a price and what you’re selling.
- WashingtonState · 6.5%$6.50
- Pierce CountyCounty · 1.7%$1.70
- Sumner City (Pierce County)City · 0.1%$0.10
- Sound Transit RTASpecial district · 1.4%$1.40
Charging this at checkout? Zamp calculates it on every order and files the returns.
Book a demoSumner sales tax rate breakdown
State, county, city and special district taxes add up to 9.7%. District lines don’t follow city limits, so some Sumner addresses pay a different rate.
| Jurisdiction | Type | Rate |
|---|---|---|
| State of Washington | State | 6.5% |
| Pierce County | County | 1.7% |
| Sumner City (Pierce County) | City | 0.1% |
| Sound Transit RTA | Special district | 1.4% |
| Combined rate | 9.7% |
Rate history
- July 20239.5%
- July 20249.5%
- July 20259.5%
- July 20269.7%
- Today9.7%
Changed since July 2023.
Sales tax near Sumner
Closest cities
- Bonney Lake4 mi9.6%
- Fife5 mi10.2%
- Auburn5 mi10.5%
- Federal Way8 mi10.4%
- Orting9 mi9.6%
- South Prairie9 mi8.2%
- Tacoma11 mi10.5%
- Kent11 mi10.4%
Elsewhere in Pierce County
- Tacoma10.5%
- Lakewood10.3%
- University Place10.2%
- Bonney Lake9.6%
- Fife10.2%
- Orting9.6%
- Fircrest10.2%
- Steilacoom10.2%
- Ruston10.2%
- South Prairie8.2%
Charge the right rate in Sumner, 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.
Sumner 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 Sumner, Washington?
The combined sales tax rate in Sumner is 9.7% as of November 2, 2026. It’s made up of 6.5% Washington state tax, 1.7% Pierce County, 0.1% Sumner City (Pierce County), 1.4% Sound Transit RTA.
Why does Sumner pay Sound Transit RTA tax?
A special district such as Sound Transit RTA 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 Sumner’s 98390 ZIP code; the calculator prices any exact address.
Is SaaS taxable in Sumner?
Yes, at the full 9.7%.
Do online sellers have to collect sales tax in Sumner?
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 Sumner’s 98390 ZIP code. Rates are checked monthly and are for information, not tax advice.
Sales tax, off your plate.
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