Free Washington Used Car Bill of Sale
Used-car private-party sales in Washington carry the same TD-420-065 / TD-420-001 paperwork as any title transfer, but with three traps that catch buyers and sellers more than anywhere else. First, the 5-business-day Vehicle Report of Sale is non-negotiable for sellers — without it, the buyer's tickets, tolls, and abandoned-vehicle fees are yours. Second, sales/use tax runs 7%–10.4% combined and is figured on the higher of the price or fair market value under DOL's valuation rules. Third, private-party used-car sales are "as-is" with no implied warranty and no lemon-law coverage — Washington's lemon law (RCW 19.118) covers only new vehicles. A pre-purchase inspection is the buyer's only real protection.
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Washington Used Car Bill of Sale — What You Need to Know
Sales Tax Details
Used cars are subject to the same 6.5% state + 0.5%–3.9% local sales/use tax (7%–10.4% combined) plus 0.3% Sound Transit MVET in the Seattle/Tacoma metro. Use tax is calculated on the higher of the sale price or fair market value under DOL's valuation rules. Trade-in credit does NOT apply to private-party sales (only to dealers).
Exemption: Gifts and family transfers: confirm with WA DOL whether the transfer is exempt from use tax and what documentation it needs.
Inspection Requirements
No state safety inspection. Emissions testing ended statewide January 2020. Used-car private buyers should arrange a pre-purchase inspection (PPI) with an independent mechanic — Washington has no lemon-law protection for private-party used-car sales (the lemon law covers new vehicles only).
Registration
Registration for this vehicle type is handled by Washington Department of Licensing (DOL) and subagent vehicle licensing offices — not the same agency that handles cars in Washington. Plan for separate filings.
Washington Used Car Sale — Step-by-Step Checklist
- Inspect the vehicle with an independent mechanic — Washington private-party used sales are AS-IS with no lemon-law coverage and no implied warranty.
- Run a vehicle history report (Carfax/AutoCheck) and verify the VIN on the dash matches the title and door jamb sticker.
- Complete Form TD-420-065 with seller and buyer info, VIN, year/make/model, sale price, and date — both sign in ink.
- Seller signs the Washington Certificate of Title and completes odometer disclosure (federal law for vehicles of model year 2011 or newer).
- Seller files Vehicle Report of Sale online at dol.wa.gov within 5 business days — this ends seller liability for tickets/tolls/abandonment.
- Buyer titles and registers within 15 days at a DOL office using Form TD-420-001 — late penalty $50 + $2/day to $125.
- Buyer pays 6.5% state + local sales/use tax (7%–10.4% combined) on the higher of price or fair market value, plus 0.3% Sound Transit MVET if in King/Pierce/Snohomish metro.
- Seller removes WA license plates — they belong to the seller, not the vehicle.
Common Pitfalls
- Buying without a pre-purchase inspection — Washington private-party sales are strictly as-is and the lemon law (RCW 19.118) covers only new vehicles, not used. Once you sign and the Report of Sale is filed, you own the problem.
- Reporting a fake low price on TD-420-065 — misreporting the price is tax fraud, and DOL's valuation rules can base use tax on fair market value anyway.
- Seller skipping the 5-day Report of Sale — buyer racks up Good To Go! toll violations on SR-520 / I-405 / Tacoma Narrows and parking tickets that the seller pays.
- Buyer missing the 15-day title deadline — late fees compound $2/day on top of unpaid sales tax.
- Forgetting Sound Transit's 0.3% MVET — Seattle, Bellevue, Tacoma, Everett, and surrounding metro buyers pay this on top of regular sales tax at title transfer.
- Assuming "trade-in tax credit" applies — it doesn't for private-party sales in Washington, only when trading in at a licensed dealer.
Pro Tip
For a used-car deal in Washington: get the inspection, run the history, complete TD-420-065 with the real price, file the Report of Sale within 5 business days, and have the buyer title within 15 days budgeting 7%–10.4% sales tax plus 0.3% Sound Transit MVET in the metro.