Washington sales tax calculator
Washington’s state rate is 6.5%; the typical combined rate with local taxes is about 9.51%. Add or remove sales tax from any amount below.
Pre-tax
$100.00
Sales tax
$9.51
Total
$109.51
How sales tax works in Washington
Washington has a 6.5% state rate and high local taxes, so combined rates reach 10%+ in the Seattle area. There is no state income tax. Groceries and prescription drugs are exempt. Washington uses destination-based sourcing — the rate is set by where the buyer receives the goods.
Rates are the Tax Foundation’s figures as of January 1, 2026. Local rates change and vary by address; confirm the exact figure with the Washington department of revenue or a rate lookup by ZIP code before relying on it.
Sales tax on common amounts in Washington (at 9.51%)
Method & sources
State base rates come from each state’s department of revenue; average combined (state + local) rates are population-weighted figures published by the Tax Foundation, as of January 1, 2026. Local rates can change every quarter and can differ between neighbouring ZIP codes, so treat the combined rate as an estimate and confirm the exact rate for a delivery address with the state revenue department.
Sales tax is applied to the price after any store discount. Manufacturer coupons and rebates are handled differently from state to state.
Disclaimer: results are estimates for educational purposes only and are not financial, tax or legal advice. Verify important figures with a qualified professional or the official source before making decisions.
Page last updated: October 1, 2026
Frequently asked questions
What is the sales tax rate in Washington?
Washington's statewide base rate is 6.5%. With average local (city and county) taxes added, the typical combined rate is about 9.51%. Your exact rate depends on the address of the sale.
How much is sales tax on $100 in Washington?
At the 9.51% average combined rate, sales tax on $100 is about $9.51, for a total of $109.51. At the 6.5% state rate alone it is $6.50.
Does Washington charge local sales tax on top of the state rate?
Yes. Cities, counties or special districts in Washington add local sales tax, which is why the average combined rate (9.51%) is higher than the 6.5% state rate.
How do I calculate sales tax backwards from a total in Washington?
Divide the tax-included total by 1 plus the rate as a decimal. At 9.51%, a $109.51 total came from a $100.00 pre-tax price. Use the "Remove tax from a total" mode above.
Sales tax in other states
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