Washington Out-the-Door Car Price Calculator
Combine the entered location sales-tax rate with Washington\u2019s separate 0.5% motor-vehicle tax, qualifying trade-in treatment and 2026 luxury-tax rule.
Start with the deal price.
Use the negotiated selling price, not the monthly payment.
Location rate plus motor-vehicle tax
Enter the regular combined sales-tax rate for the relevant Washington location without adding the separate motor-vehicle tax. The engine then adds the 0.5% vehicle tax as its own line.
Qualifying like-kind trade-ins
A qualifying trade-in can reduce the regular retail-sales-tax measure. The calculator also applies the reduction to its separate vehicle-tax estimate; confirm unusual transactions with the Department of Revenue.
Registration remains location-dependent
The result includes published common title, filing, service and tab charges. RTA, weight, electric-vehicle, plate and other local charges must be entered separately.
The calculator distinguishes official fixed rules from local or user-entered estimates. Dealer worksheets and licensing-office totals remain the final transaction records.
Review official sources