Idaho charges sales and use tax of 6% statewide on vehicles, with no local add-on. A trade-in does reduce the taxable price, which is real money on the deal.
Type your own numbers and see the same car priced as cash and as a loan, with the taxes and state fees for Idaho. Nothing you type leaves this page.
To see a lease, pick a vehicle. A lease is priced on one car: what it is expected to be worth at the end (its residual) and the leasing company's money factor change by model and by month.
An estimate on the numbers you type, not an offer of credit or a quote from any dealership. Starting loan rates are Rateous's rates for each credit range and term; they are not an offer from any lender. The documentary fee starts at an example figure, the state's legal cap where it has one or $599 where it does not, not any dealership's fee; each dealership sets its own. Taxes and state fees are estimates for Idaho; the dealership's paperwork and your motor vehicle agency have the final numbers. Nothing you type is sent, saved, or used to check your credit.
Idaho has no local sales tax on vehicle purchases; a few resort cities levy local option taxes, but those do not reach vehicles registered outside the city.
Manufacturer rebates do not reduce the taxable sales price in Idaho; dealer discounts do.
Registration fees are from the ITD fact sheet (July 2017 schedule still in force per the 2025 repost); title fee $14 per ITD title fee notice.
On a $35,000 new car with a $37,000 sticker, registered in Boise, no trade-in: the same figures the calculator above uses. The dealership's documentary fee is its own and is not included.
| Fee | Amount |
|---|---|
| Title fee | $14.00 |
| Registration (est., age based) | $85.00 |
| License plate fee | $7.50 |
| EMS and state police fees (annual) | $4.25 |
| In all | $110.75 |
Idaho taxes a lease one payment at a time: the tax is added to each monthly payment, so you pay it as you go.
Pick your city for the exact combined rate where you register, plus what title and registration run there.
6%. Idaho applies one rate statewide on vehicles, so it does not change from city to city.
Value of a vehicle taken in trade by the seller is excluded from the sales price (Idaho Code 63-3613).
On a $35,000 new car with a $37,000 sticker, registered in Boise: Title fee $14.00, Registration (est., age based) $85.00, License plate fee $7.50, EMS and state police fees (annual) $4.25, about $110.75 in all. Passenger vehicles 8,000 lbs or less: $69 (1-2 years old), $57 (3-6 years), $45 (7+ years); plus plates $3.75 each, EMS $1.25, ISP $3, county administrative fee (varies) and county highway district fees where they exist (e.g., Ada County $24-$40). EV add $140, PHEV $75 per year.
No. Idaho sets no statutory cap. Each dealership sets its own documentary fee (not a government fee), and each car shows its dealership's fee.
Idaho taxes a lease one payment at a time: the tax is added to each monthly payment, so you pay it as you go.