Washington sales tax calculator
Washington’s state rate is 6.5%; the typical combined rate with local taxes is about 9.38%. Add or remove sales tax from any amount below.
Pre-tax
$100.00
Sales tax
$9.38
Total
$109.38
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 approximate and current as of the 2024–2025 tax years. 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 9.38%)
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 9.38%. Your exact rate depends on the address of the sale.
How much is sales tax on $100 in Washington?
At the 9.38% average combined rate, sales tax on $100 is about $9.38, for a total of $109.38. 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 (9.38%) 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 9.38%, a $109.38 total came from a $100.00 pre-tax price. Use the "Remove tax from a total" mode above.