What is the car sales tax rate in Washington?

Washington applies a 6.8% state rate to motor-vehicle sales — the 6.5% general retail rate plus an extra 0.3% motor-vehicle sales/lease tax. A local city or county rate is then added on top, so combined rates commonly run from about 8% to 10.6% depending on where you register.

Does Washington deduct trade-in value before tax?

No. Unlike many states, Washington taxes the full selling price of the vehicle and does not subtract your trade-in value from the taxable amount. This is a common surprise that raises the total tax compared with trade-in-friendly states.

Why is the vehicle rate higher than the regular sales tax?

Washington adds a separate 0.3% motor-vehicle sales/lease tax on top of the 6.5% general retail rate, producing an effective 6.8% state rate that applies specifically to vehicles. Regular retail purchases use the 6.5% base instead.

Do I pay sales tax on a private-party used car?

Yes. Washington use tax applies to private-party vehicle purchases at the same combined rate based on where you live, and it is collected when you transfer the title and register the vehicle. Enter the purchase price to estimate it.

Is dealer documentation fee taxable?

Generally yes — taxable dealer and documentation fees are added to the price before sales tax is computed. Enter any such fees in the fees field so the estimate includes them.

Washington Car Sales Tax Calculator

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The Washington car sales tax calculator estimates the tax you will owe when registering a vehicle, using the state’s special 6.8% motor-vehicle rate plus your local rate. Because Washington does not deduct trade-in value, this tool helps you avoid underestimating the bill.

How it works

Washington taxes vehicles slightly differently from ordinary retail purchases:

State rate of 6.8%: the 6.5% general retail rate plus an extra 0.3% motor-vehicle sales/lease tax that applies only to vehicles.
Local rate: every city and county adds its own sales tax on top, commonly 1.2% to 3.9%, based on where the vehicle is registered.
No trade-in deduction: the tax base is the full selling price (plus taxable fees). Your trade-in does not reduce it.

The calculation is straightforward:

taxable amount = price + taxable fees
state tax      = taxable amount x 0.068
local tax      = taxable amount x (local rate)
total tax      = state tax + local tax

Example

A $32,000 car with $200 in taxable fees, registered where the local rate is 2.4%:

Taxable amount: $32,000 + $200 = $32,200
State tax: $32,200 x 0.068 = $2,189.60
Local tax: $32,200 x 0.024 = $772.80
Total sales tax: $2,962.40 at a combined rate of 9.2%.

Tips and notes

Use the registration address, not the dealer’s. The local rate is based on where the vehicle is garaged, so a purchase across a county line may carry a different rate.
Trade-in does not help here. Budget tax on the full price even if you trade in a vehicle.
Private sales count too. Use tax at the same rate applies to private-party purchases and is collected at title transfer.
Confirm your exact local rate with the Washington Department of Revenue’s tax-rate lookup before finalizing your numbers.