Short answer
Washington taxes the price after the trade-in is deducted. The trade-in must be property of like kind — a motor vehicle traded in on a motor vehicle. Washington credits sales tax legally paid to another state, so the same dollars are not taxed twice. The rules above cover retail dealer sales; most states handle leases and private-party sales separately.
Washington car sales tax quick facts
Last verified August 23, 2026| Sales tax rate on vehicles | Not yet verified against an official source. Confirm with the Washington State Department of Revenue. Official site → |
| Trade-in credit | Washington taxes the price after the trade-in is deducted. The trade-in must be property of like kind — a motor vehicle traded in on a motor vehicle.[1] |
| Selling to an out-of-state buyer | Not yet verified against an official source. Confirm with the Washington State Department of Revenue. Official site → |
| Credit for tax paid to another state | Washington credits sales tax legally paid to another state, so the same dollars are not taxed twice.[2] |
| Dealer doc fee | Capped at $200[3] · not taxable[3] |
| Temp tag for the drive home | For a nonresident buyer taking the vehicle out of Washington, the vehicle leaves under a trip permit. A trip permit is valid for 3 consecutive days beginning with the first day of use, costs $36, and up to 3 permits may be issued for any one vehicle in a 30-day period. (valid 3 days)[4] |
| Out-of-state buyer registration | Not yet verified against an official source. Confirm with the Washington State Department of Revenue. Official site → |
From the desk
Washington stacks high local rates plus an extra motor-vehicle addition on top, keyed to address, and the no-tax Oregon border makes exemption paperwork a permanent fixture of the desk. Getting the location code right is the whole game.
Selling to an out-of-state buyer in Washington
Not yet verified against an official source. Confirm with the Washington State Department of Revenue. Official site →
Then comes the part nobody staples to the deal jacket: moving the title, issuing the temp tag, and getting the registration done in the buyer's state. That handoff chain is what Voltra's title tracking was built to watch.
Buying in Washington from out of state
If you live in another state and buy in Washington, the deciding rule is where the vehicle gets registered: your home state's tax applies at registration, and what happens at the Washington sale depends on the row above. Washington credits sales tax legally paid to another state, so the same dollars are not taxed twice.[2]
Registration and temp tags
For a nonresident buyer taking the vehicle out of Washington, the vehicle leaves under a trip permit. A trip permit is valid for 3 consecutive days beginning with the first day of use, costs $36, and up to 3 permits may be issued for any one vehicle in a 30-day period. Validity: 3 days.[4]
Bordering states
Cross-border deals from Washington most often involve Idaho and Oregon. Treat each pairing as its own problem and put it through the out-of-state checker.
Vehicle-type exceptions
The extra 0.5% motor vehicle sales/lease tax only applies to self-propelled vehicles. Farm tractors, farm vehicles, off-road vehicles, non-highway vehicles, trailers, and snowmobiles are excluded from that addition, though ordinary state and local sales tax still applies to them. RVs and motorhomes, motorcycles, buses, pickups, and commercial trucks are included.[5]
Sources
- dor.wa.gov/education/industry-guides/auto-dealers/trade-ins · verified 2026-08-23
- app.leg.wa.gov/RCW/default.aspx?cite=82.12.035 · verified 2026-08-23
- dor.wa.gov/education/industry-guides/auto-dealers/miscellaneous · verified 2026-08-23
- dol.wa.gov/vehicles-and-boats/license-plates/trip-permits-unlicensed-vehicles · verified 2026-08-23
- dor.wa.gov/taxes-rates/other-taxes/motor-vehicle-salesuse-tax · verified 2026-08-23