Reverse Sales Tax Calculator Washington State
Shopping in Washington means paying at least 6.5% in state sales tax, with local taxes pushing the combined rate to an average of 9.21%. Enter your total to find the pre-tax price.
Washington Sales Tax Overview
Washington State has a 6.5% base sales tax, but local rates push the combined rate higher—Seattle's combined rate is 10.35%, one of the highest in the country.
| Rate Type | Rate |
|---|---|
| Washington State Rate | 6.5% |
| Average Local Rate | 2.71% |
| Average Combined Rate | 9.21% |
For official Washington sales tax information, see the Washington Department of Revenue.
Reverse Tax Formula for Washington
To find the original price before Washington sales tax, use this formula:
Original Price = Total ÷ (1 + 9.21 ÷ 100)
Original Price = Total ÷ 1.0921Example Calculations for Washington
| Total Paid | Rate Used | Original Price | Tax Amount |
|---|---|---|---|
| $50.00 | 9.21% | $45.78 | $4.22 |
| $100.00 | 9.21% | $91.57 | $8.43 |
| $250.00 | 9.21% | $228.92 | $21.08 |
| $500.00 | 9.21% | $457.83 | $42.17 |
Sales Tax Rates by City in Washington
Local cities and counties in Washington charge additional taxes on top of the 6.5% state rate. Use a city-specific calculator for the most accurate pre-tax calculation.
Washington Sales Tax – Common Questions
What is the sales tax rate in Seattle?▼
Seattle's combined sales tax rate is 10.35%, which includes Washington's 6.5% state tax plus King County and city taxes.
Does Washington have income tax?▼
No. Washington State has no personal income tax, which is one reason its sales tax rates tend to be higher than many other states.
How do I calculate pre-tax price in Washington?▼
Divide the total by (1 + tax rate). For Seattle (10.35%): Original Price = Total ÷ 1.1035.