Washington Car Sales Tax Calculator
Washington charges a state vehicle sales/use tax of 6.50% on a car purchase. On a $20,000 vehicle that is about $1,300.00 in state tax before any local add-ons. Enter your own price below — and your trade-in, if Washington allows a trade-in credit — to estimate what you'll owe.
Quick answer: Washington’s state vehicle sales/use tax rate is 6.50%. Local (county/city) taxes may apply on top.
Estimate your Washington car sales tax
Enter the vehicle price. If Washington gives a trade-in tax credit, add your trade-in value to reduce the taxable amount.
State rate only. Many Washington counties and cities add a local sales tax on top, so your actual total may be higher. Trade-in credit rules vary — confirm eligibility with the official source below.
How Washington taxes a car purchase
| State vehicle sales/use tax rate | 6.50% |
| Taxable amount | Price − trade-in credit (where allowed) |
| Local / county tax | Varies by jurisdiction — added on top of the state rate |
Washington title fee is approximately $15 (varies by transaction). Base registration is $30, with weight-based fees on top. State motor vehicle use tax is 6.5%; local taxes add to a typical 8%–10.5% combined.
Sales tax on a used car in Washington
Washington applies the same 6.50% state sales/use tax to a used car as to a new one. On a private-party sale the tax is normally collected when you title and register the vehicle — calculated on the price you paid, minus a trade-in credit where the state allows one, and checked against the vehicle's fair-market value to deter under-reporting.
Dealer vs. private-party purchases in Washington
Washington dealers collect sales/use tax at the buyer's residence rate and submit title paperwork to DOL on the buyer's behalf. Private-party buyers must visit a vehicle licensing office (a subagent or DOL office) with the signed title, TD-420-001 application, proof of insurance, and ID within 15 days. RTA tax is added to the annual renewal bill, not collected at initial title transfer.
Source ↗What's different about Washington vehicle tax
Washington has no state income tax but charges a comparatively high motor vehicle sales/use tax. The DOL collects 6.5% state tax plus the local rate in effect at the buyer's residence — combined rates run 7.0% to 10.5% — at title transfer. Private-party sales are taxed the same as dealer sales. Family gifts among immediate family members (spouse, parent, child, sibling, grandparent, grandchild) qualify for an exemption when accompanied by a properly completed Affidavit of Gift form.
Source ↗County & local taxes in Washington
Washington's combined state-and-local sales/use tax ranges from 7.0% in rural eastern counties to 10.5% in parts of King and Snohomish counties. On top of that, residents inside the Sound Transit Regional Transit Authority (RTA) district pay an additional Motor Vehicle Excise Tax (MVET) at renewal — currently 0.8% of the vehicle's depreciated value, based on a state-published schedule. The RTA district covers urban King, Pierce, and Snohomish counties; ZIP-code-level boundaries apply.
Source ↗Worked example: buying a car in Washington
Jordan buys a used 2019 Subaru Forester from a private seller in King County (Seattle), Washington for $20,000. Jordan's residence is inside the Sound Transit RTA district.
| Vehicle price | $20,000.00 |
| State sales/use tax | $2,070.00 |
| Title fee | $15.00 |
| Registration fee | $75.00 |
| Subagent service fee (typical) | $8.00 |
| Estimated total | $22,168.00 |
Jordan's Seattle ZIP code has a combined 10.35% sales tax (state 6.5% + local 3.85%), so the use tax is $2,070. The $75 registration includes the $30 base, weight fee, and other line items typical for a mid-size SUV (no RTA charged at title transfer — RTA will appear on next year's renewal). Title transfer is $15. No emissions test is required because Washington ended its emissions program in 2020.
What this estimate excludes
- Local and district taxes. County, city, and transit taxes are added on top of the Washington state rate.
- Title, registration, and plate fees. These are separate from sales tax — use the Washington registration and title-transfer calculators for those.
- Dealer documentation fees. A dealer “doc fee” is charged on top and is often itself taxable.
- Exemptions. Gifts, inheritance, and certain family transfers may be exempt — confirm with Washington State Department of Licensing (DOL).
Official Washington sources
Related Washington tools & guides
Frequently asked questions
How much is sales tax on a car in Washington?
The Washington state vehicle sales/use tax rate is 6.50%. Multiply it by the taxable purchase price (usually the price minus any trade-in credit). Counties and cities may add a local sales tax on top, so confirm your combined rate with Washington State Department of Licensing (DOL).
Do I pay sales tax when buying a used car from a private seller in Washington?
In most states, sales or use tax on a private-party vehicle purchase is collected when you title and register the car, not at the point of sale. The rate is generally the same as a dealer sale. Confirm the private-sale rules with Washington State Department of Licensing (DOL).
Does Washington give a sales tax credit for a trade-in?
Most states tax only the difference between the vehicle price and your trade-in value, which lowers the tax you owe. A handful of states tax the full price with no trade-in credit. Verify Washington's treatment before you rely on the estimate above.
Are there local or county car sales taxes in Washington?
Often, yes. The rate shown here is the Washington state rate only; many counties, cities, and transit districts add a local sales tax on vehicle purchases, so your combined rate can be higher. Washington State Department of Licensing (DOL) publishes the official combined rates.
Can you legally avoid sales tax on a used car in Washington?
The legitimate ways to lower or avoid vehicle sales/use tax in Washington are a qualifying trade-in credit (where the state allows one), a genuine gift or qualifying family transfer, or a specific exemption the state grants — not understating the sale price, which is illegal and easily caught by Washington State Department of Licensing (DOL) against the vehicle's fair-market value. Confirm any exemption with Washington State Department of Licensing (DOL) before relying on it.
What is the Sound Transit RTA tax and do I owe it?
Residents inside the Sound Transit Regional Transit Authority district — urban portions of King, Pierce, and Snohomish counties — pay an additional Motor Vehicle Excise Tax (MVET) at registration renewal, currently 0.8% of the vehicle's value under Sound Transit's depreciation schedule. You can check whether your address is inside the RTA boundary with the lookup tool on the Sound Transit website. RTA is paid annually with renewal, not at title transfer.
Does Washington still require emissions testing?
No. Washington ended its motor vehicle emissions inspection program on January 1, 2020. Vehicles registered anywhere in Washington — including the Puget Sound metro — are exempt from periodic emissions testing as a condition of registration. The Department of Ecology continues to monitor air quality but does not run a consumer vehicle inspection program.
What is a Washington vehicle licensing subagent?
A subagent is a private contractor authorized by the Department of Licensing to process vehicle transactions on its behalf. Many county auditor offices and small private businesses operate as subagents. Service fees are typically $5–$15 on top of state fees. You can also visit a DOL office directly in major cities, but subagents are often more convenient and have shorter waits.
Last reviewed: 2026-01-01 · Reviewed by the Car Paperwork editorial team · Based on official Washington State Department of Licensing (DOL) sources · Independent resource · Not legal advice