Free Idaho Vehicle Bill of Sale
Idaho keeps vehicle sales straightforward: one flat 6% tax rate statewide, no smog check, and an official ITD Form 3738 bill of sale. Title must transfer within 30 days, and out-of-state vehicles need a VIN verification before Idaho will issue a new title.
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Idaho Vehicle Bill of Sale — What You Need to Know
Sales Tax Details
Idaho charges a flat 6% sales tax statewide — no local add-ons. Tax is paid by the buyer at the county assessor or DMV when titling.
Inspection Requirements
No safety or emissions inspection required. Out-of-state vehicles need a VIN verification (physical inspection) before a new Idaho title can be issued.
Idaho Vehicle Sale — Step-by-Step Checklist
- Obtain ITD Form 3738 (Bill of Sale) from itd.idaho.gov/dmv or your county assessor's office.
- Record the full VIN, year, make, model, odometer reading, sale price, and both parties' names and addresses.
- Complete the federal odometer disclosure on the back of the title (required by federal law for vehicles of model year 2011 or newer).
- Seller signs the title over to buyer; if a lien is shown, obtain a lien release from the lienholder first.
- If the vehicle was titled out of state, arrange a VIN verification with a licensed Idaho dealer, law enforcement officer, or ITD inspector.
- Buyer takes the signed title, bill of sale, and proof of insurance to the county assessor's office within 30 days.
- Pay the 6% sales tax and annual registration fee (based on vehicle age) at the counter.
Common Pitfalls
- Missing the 30-day title transfer window triggers late penalties at the county assessor — don't wait.
- Skipping the lien release: if the title still shows a lienholder, the buyer cannot get a clean Idaho title until the lienholder signs off.
- Out-of-state buyers often skip the VIN verification requirement and get rejected at the assessor's window — schedule it before going to the DMV.
- Recording only the trade-in or partial price on the bill of sale to reduce tax is fraud; Idaho sales tax is owed on the total sales price, with no trade-in allowance in a private sale.
Pro Tip
Idaho's county assessor system means titling a vehicle is a local in-person process — the DMV does not do it centrally. Find your county assessor's motor vehicle office before the 30-day clock starts, confirm their hours, and bring all documents in one trip to avoid a second visit.