ID🔑 Buy a Used Car

Idaho Used Car Buyer's Paperwork Checklist

Use this checklist to prepare for buying a used vehicle from a private seller in Idaho. Confirm the latest requirements with the Idaho Transportation Department — Vehicle Services before completing your transaction.

Idaho Transportation Department — Vehicle Services ↗

Quick answer

To complete a buy a used car in Idaho, contact the Idaho Transportation Department. You have 30 days to complete the filing.

State: Idaho
Agency: Idaho Transportation Department
Process: Buy a Used Car
Notary required: Conditional
Bill of sale: Conditional
Odometer disclosure: Yes
Filing deadline: 30 days
Last verified: 2026-05-13
Official source: Idaho Transportation Department ↗

⚠ Independent Checklist — Not an Official SourceThis is an independent checklist based on official state motor vehicle sources. Requirements in Idaho can vary by vehicle type, lien status, county, and transaction details. Always confirm with your official state motor vehicle agency before submitting documents or fees. This is not legal advice and is not affiliated with any DMV or government agency.

📋 Data note: Some fields on this page are based on general guidance and may not reflect the latest state requirements. Confirm specific details with the official state agency.

Quick reference

Notary required?

◆Conditional

Bill of sale?

◆Conditional

Odometer disclosure?

✓Yes

Inspection required?

✗No

⏱ Important Deadlines

30-day deadline: Documents must be filed with a county assessor's motor vehicle office within 30 days of transfer (Idaho Code § 49-514). A $20 late-filing penalty applies.Official source ↗

Buyer Checklist

Items the buyer typically needs to prepare or provide.

Signed title from sellerRequired(buyer)

The seller must have signed the title over to you. Check that the odometer reading is noted.

Bill of saleRecommended(buyer)

Proof of purchase with VIN, price, and both parties' information.

Government-issued photo IDRequired(buyer)

Required when submitting title transfer paperwork.

Payment for title transfer feesRequired(buyer)

Fees vary by state. Check your state's official DMV fee schedule.

Proof of insuranceRequired(buyer)

Most states require proof of minimum liability insurance before issuing plates.

Sales tax paymentConditional(buyer)

Sales or use tax is typically due when registering the vehicle. Rate and basis vary by state.

Required Forms

Signed title from sellerRequired(buyer)

The seller must sign the title over to you. Verify the VIN and odometer reading.

Title transfer applicationRequired(buyer)

Form required to apply for a new title in your name. Requirements vary by state.

Special requirements

Notarization◆Conditional

Notarization is required when filing a title application by mail. Filing in person at a county assessor's motor vehicle office does not require a notary — a county deputy can witness the signature instead.

Bill of Sale◆Conditional

A bill of sale (Form ITD 3738) is required unless the seller has entered the sales price directly on the title. The bill of sale also serves as a 72-hour temporary operating permit.

Odometer Disclosure✓Yes

Required by federal law for vehicles under 10 years old.

Inspection✗No

Idaho does not require a seller-provided smog certificate or safety inspection for private-party sales. There is no statewide emissions inspection program.

Step-by-step process

1Run a vehicle history report (e.g., CARFAX or NMVTIS) before purchase.
2Verify the seller's name matches the name on the title.
3Ensure the title is free of liens or confirm the lien will be resolved.
4Have the seller sign the title over to you and complete odometer disclosure.
5Obtain a bill of sale from the seller.
6Submit the signed title, application, fees, and proof of insurance to your state DMV.
7Pay any applicable sales tax.

Common mistakes to avoid

✗Not verifying that the seller is the titled owner.
✗Failing to check for outstanding liens before purchase.
✗Missing the deadline to register the vehicle after purchase.
✗Not getting a bill of sale.

Official links

↗Idaho ITD — Vehicle Titlesitd.idaho.gov

Always verify with the official state agency before submitting documents. Requirements change.

Frequently asked questions

How long do I have to register after buying a used car?

Deadlines vary by state. In Idaho, confirm the registration deadline with the Idaho Transportation Department — Vehicle Services to avoid late fees.

What if the title has errors?

Do not accept a title with correction fluid or scratched-out information. Ask the seller to obtain a corrected title from the DMV before completing the sale.

Can I drive the car home before registering it?

Many states offer a short window or allow a temporary permit. Check your state agency for guidance.

Other Idaho vehicle tasks

🚗Sell a Car→📄Title Transfer→📋Replace Lost Title→🗺️Out-of-State Registration→

Tools and resources

🧮Estimate title transfer costs in Idaho→🧮Estimate registration costs in Idaho→📊Compare buy a used car across all 50 states→📖What is a car title?→📖What is a lien release?→

Last reviewed: 2026-05-13 · Reviewed by the Car Paperwork editorial team · Based on official Idaho Transportation Department — Vehicle Services sources · Independent resource · Not legal advice