Selling a car privately in Idaho
Idaho pairs a standard title assignment with one of the fastest seller protections in the country: within 5 days of delivering the vehicle you can file a release of liability, and Idaho's online version processes immediately. The buyer then has 30 days to file the title work with a county assessor's motor vehicle office (a late-filing penalty applies) and pays Idaho sales tax there.
Include a bill of sale with the vehicle description, price, buyer's full legal name, your original signature, and the date; Idaho publishes a standard form (ITD 3738) and the county will want the price for tax. Idaho plates belong to the seller, so take them off and transfer or surrender them.
The checklist
- 1
Assign the title to the buyer (Idaho)
Complete the assignment on the Idaho title with buyer, date, and odometer reading, and sign it over.
- 2
File the release of liability within 5 days
Submit Idaho's notice of release of liability online for immediate processing, or use the paper form.
- 3
Give the buyer a bill of sale (ITD 3738)
Include vehicle description, sales price, buyer's full legal name, your original signature, and the date. The county uses the price for sales tax.
- 4
Remove your license plates
Idaho plates belong to the seller. Take them off before the buyer leaves.
- 5
Verify your title status
Locate the physical title and confirm it is in your name with no undisclosed liens. If the title is lost, request a duplicate before listing.
- 6
Complete a bill of sale
Recommended for every private sale even where not required. Record buyer/seller names, VIN, price, date, and an as-is acknowledgement. Both parties keep a copy.
- 7
Complete the odometer disclosure
Federal rules require odometer disclosure for most vehicles under 20 model years old. Usually done on the title itself; some states use a separate form.
- 8
File a release of liability / notice of sale
If your state offers it, file promptly after the sale so you are not liable for tickets or incidents after the buyer drives away.
- 9
Handle plates per your state's rules
In most states the seller removes the plates; in some, plates stay with the vehicle. Confirm your state's rule before handing over the keys.
- 10
Pay off any lien before or at transfer
If a lien remains, coordinate payoff with the lender so the buyer can receive a clear title. Do not sign over a title with an unreleased lien.
- 11
Confirm payment before signing the title
Verify cash, or use a cashier's check verified with the issuing bank, or complete the transfer inside the buyer's bank. Never release the signed title before funds are confirmed.
- 12
Keep copies of everything
Photograph or copy the signed title (both sides), bill of sale, odometer disclosure, and the buyer's ID if they consent.
- 13
Check official state instructions
Requirements change. Confirm the current process on your state DMV / motor vehicle agency website before the sale.
Generate your Idaho sale packet
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Start your free beta packetIdaho private sale FAQ
Does an Idaho car title need to be notarized?
No. Idaho does not require notarization for a standard private-party title assignment. Sign the title over completely and legibly.
How does Idaho's release of liability work?
Within 5 days of delivering the vehicle, file the notice of release of liability, ideally online at Idaho DMV's site where it processes immediately. It records the sale date and buyer so post-sale tickets do not land on you.
How long does the buyer have to title in Idaho?
30 days from transfer, filed at a county assessor's motor vehicle office, with a late-filing penalty after that. The buyer pays 6% Idaho sales tax there unless an exemption applies.
Do I keep my plates when I sell a car in Idaho?
Yes. Idaho plates stay with the seller. Remove them at handoff and ask the county office about transferring them to another vehicle.
Selling a special situation?
Other states
Bold states have a state-specific guide; others use the general checklist.
Last reviewed Jul 13, 2026. This is a general checklist, not legal advice. Confirm current requirements with your state DMV or tax office.