Sales Tax Calculator

Washington Sales Tax
Calculator

Calculate Washington sales tax instantly for any city. Enter any amount to see the exact tax and total.

State Rate
6.500%
$

About Washington Sales Tax

State rate: 6.500%
Local rate in King County: 3.850%
Combined rate in Seattle: 10.350%

Sound Transit (RTA)

Businesses in this district charge an additional tax, bringing the total rate to 11.750% instead of the standard 10.350%.

State Rate
6.500%
Local Tax
Up to ~4%
Seattle Rate
10.35%
Since 1983
40+ Yrs

Washington Sales Tax Rates by City

Washington has a state sales tax rate of 6.500%, but local jurisdictions add their own taxes. Combined rates vary significantly by location, from 6.500% to over 10%. The Sound Transit District (King, Pierce, and Snohomish counties) adds an additional 1.4% RTA tax.

Seattle

King County

10.350%
Special District
764,753

Spokane

Spokane County

9.100%
Standard Rate
229,608

Tacoma

Pierce County

10.300%
Special District
225,030

Vancouver (WA)

Clark County

8.800%
Standard Rate
199,884

Bellevue

King County

10.200%
Special District
151,436

Kent

King County

10.200%
Special District
131,235

Everett

Snohomish County

9.900%
Special District
111,371

Spokane Valley

Spokane County

8.900%
Standard Rate
111,371

Renton

King County

10.300%
Special District
103,005

Bellingham

Whatcom County

9.000%
Standard Rate
96,619

Note: Rates vary widely across Washington. Seattle area rates can exceed 10% when including Sound Transit taxes.

How to Calculate Sales Tax in Washington

Sales Tax Calculation
Washington
Example: Seattle Purchase
1
Determine the purchase price
Purchase price (before tax) $500.00
2
Multiply by the tax rate
$500.00 × 10.35% (0.1035) for Seattle
Sales tax $51.75
3
Add to the original price
$500.00 + $51.75
TOTAL AMOUNT DUE $551.75
Thank you for your purchase

Location Matters

Tax rates vary dramatically across Washington, from 6.5% to over 10%. Always use the specific rate for your location.

What's Exempt?

Exempt: Groceries, prescriptions
Taxable: Clothing, prepared foods, most goods

Special Washington Sales Tax Rules

Sound Transit (RTA) Tax (1.4%)

The Regional Transit Authority (RTA) tax is a voter-approved 1.4% sales tax in King, Pierce, and Snohomish counties to fund Sound Transit's light rail, commuter rail, and bus systems.

Voter approved: In 1996, 2008, and 2016, voters in the Sound Transit District approved tax increases. The rate increased from 0.9% (2008) to 1.4% effective April 1, 2017.

Sound Transit District Coverage

King County: Seattle, Bellevue, Redmond, Kent, Renton, and most of King County

Pierce County: Tacoma and surrounding areas

Snohomish County: Everett, Lynnwood, and portions of south Snohomish County

Tax-Exempt Items

Washington exempts several categories from sales tax

  • Groceries: Unprepared food items (excludes prepared foods, soft drinks, alcohol, dietary supplements)
  • Prescription Medications: Drugs prescribed by licensed healthcare providers
  • Manufacturing Equipment: Machinery and equipment used in production
  • Agricultural Items: Certain farming and agricultural supplies
  • Newspapers: Printed publications sold regularly

Note: Clothing is NOT exempt in Washington and is taxed at the full rate, unlike neighboring Oregon which has no sales tax.

How Washington Compares to Neighboring States

Here's how Washington's sales tax stacks up against nearby states

WA
6.500%

Washington has significantly higher combined rates than its neighbors—especially in Seattle where rates exceed 10%, compared to Oregon's 0% and Idaho's 6%.

Got Questions?

Frequently Asked Questions

Washington Sales Tax Rate History

Washington's state sales tax has evolved since 1935, but has remained remarkably stable at 6.500% since 1983—over 40 years:

Effective Date Rate Change Notes
1983 - Present 6.500% Stable for 40+ years (current rate)
1982 5.400% ▼ -0.100% Decreased from 5.5%
1981 5.500% ▲ +1.000% Major increase from 4.5%
1979 4.500% ▼ -0.100% Decreased from 4.6%
1976 4.600% ▲ +0.100% Increased from 4.5%
1967 4.500% ▲ +0.300% Increased from 4.2%
1965 4.200% ▲ +0.200% Increased from 4%
1959 4.000% ▲ +0.670% Increased from 3.33%
1955 3.330% ▲ +0.330% Increased from 3%
1941 3.000% ▲ +1.000% Increased from 2%
1935 2.000% Retail sales tax enacted (Revenue Act of 1935)

Remarkable Stability: Washington's state sales tax rate has remained at 6.5% since 1983, making it one of the longest periods of rate stability in the nation. However, local rates and special district taxes (like Sound Transit) have increased significantly over this period.

Related Calculators & Resources

Disclaimer: This calculator provides estimates based on current Washington sales tax rates as of January 2025. Tax rates are subject to change by state legislation and local jurisdictions. For official tax rates and specific guidance on your situation, please consult the Washington Department of Revenue or a qualified tax professional.

Not Legal or Tax Advice: The information provided on this page is for informational purposes only and should not be construed as legal or tax advice. Always verify current rates before making large purchases or business decisions.

Sources: Washington Department of Revenue, Revenue Act of 1935, Sound Transit, RCW 82.14 (Local Retail Sales and Use Taxes)

Last updated: October 10, 2025