Registering a Vehicle in Idaho

Idaho vehicle registration is handled at the county assessor's office in your home county, not at a state-run DMV. Each of Idaho's 44 counties operates an assessor's office with motor-vehicle authority, and that's where titles are issued, plates are handed across the counter, and the 6% sales tax is collected. Idaho gives new arrivals one of the most generous registration windows in the country — 90 days after establishing residency — though most carriers and lenders expect a faster turnaround.

When you need to register

You must register a vehicle in Idaho when you:

• Move to Idaho and establish residency (90-day window).
• Buy a vehicle from a dealer (the dealer typically handles temporary plates and submits the title work).
• Buy a vehicle from a private party (you have 30 days to transfer title and register).
• Inherit a vehicle whose previous owner was an Idaho resident.
• Take a long-stored or rebuilt vehicle out of "non-use" status.

Documents to bring

Walk into the county assessor's office with:

• The current title, properly assigned by the seller, or the manufacturer's statement of origin if the vehicle is brand new.
• A bill of sale showing the purchase price (used to calculate sales tax).
• An odometer disclosure for vehicles less than 20 years old.
• Proof of Idaho insurance meeting the 25/50/15 minimum — insurance card, declarations page, or binder.
• Idaho driver's license or photo ID for the registrant.
• Lien information if a finance company holds title.
• Emissions test result if the vehicle will be registered to an address in Ada or Canyon County.

Forms used

The two forms you'll see most often:

• ITD-3367 — Application for Certificate of Idaho Title.
• ITD-3260 — Application for Vehicle Registration.

The county assessor staff typically prepares both forms for you at the counter from the documents you bring; you're not expected to fill out the ITD forms in advance the way some states require.

Sales tax and fees

Idaho charges 6% sales tax on the purchase price of vehicles bought from a private party or out-of-state seller. Dealers typically collect the tax at sale; private-party tax is collected at the assessor's office during titling. Standard fees include the $14 title fee, the registration fee (which varies by vehicle age and county), and a small plate-issuance fee for new plates. Counties may also charge a small administrative fee. Vehicles purchased in another state where sales tax was already paid receive a credit up to the Idaho rate, with proof of payment.

Treasure Valley emissions

Idaho does not run a statewide emissions program, but vehicles registered in Ada County (Boise, Meridian, Eagle, Garden City) and Canyon County (Nampa, Caldwell, Middleton) must pass an emissions inspection every two years before registration can be renewed. The test is administered by local air-quality boards at private inspection stations, not at the assessor's office. Vehicles less than 5 model years old, all-electric vehicles, and motorcycles are exempt. Outside the Treasure Valley, no emissions testing is required regardless of vehicle age.

New residents

Anyone moving to Idaho has 90 days to register vehicles after establishing residency — one of the most generous windows in the country. To register a vehicle from another state, bring the out-of-state title (or a current registration card if the title is held by a lender out of state), proof of insurance meeting Idaho's 25/50/15 minimum, an odometer reading, and a VIN inspection if the title doesn't show a recent VIN verification. Some counties require a VIN inspection at the assessor's office; others accept a peace-officer or notary VIN verification.

Plates and stickers

Idaho issues two-plate registration for most passenger vehicles — one front, one rear. Standard plates use the "Famous Potatoes" or scenic landscape design unless the registrant chooses a specialty plate (university, conservation, military, hobbyist). Specialty plates carry an additional fee that's split between ITD and the sponsoring program. Once registration is complete, you'll get the printed plates and a registration card to keep in the vehicle alongside proof of insurance.