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What a vehicle purchase costs in Idaho, itemized and sourced.

Sales tax, title and registration for a vehicle registered in Idaho. Every line cites the page it came from and the day we opened it.

On a $30,000.00 gas vehicle with no trade-in, the Idaho estimate is $1,884.25 in taxes and fees (idaho sales tax (6%) $1,800.00, title $14.00, registration (passenger vehicle, newer) $69.00, emergency medical services fee $1.25).

Your purchase

Idaho
Price
Where you live
The county administration fees is added for the county you choose.
Vehicle
Fuel
This year minus the model year. Use 0 for the current model year.

Estimate only. Not tax or legal advice. Confirm with your Idaho state agency before you pay.

Estimate / Idaho

Reviewed Oct 24, 2026

  • Idaho sales tax (6%)[1] source$1,800.00
  • Title[2] source$14.00
  • Registration (passenger vehicle, newer)[2] sourceCheck sourceThe Transportation Department prints the middle age band as 3 or 6 years old, which looks like a typo for 3 to 6, and does not say whether a current model year counts as age 0 or 1. The bands used here are 0 to 2, 3 to 6 and 7 or more years.$69.00
  • Emergency medical services fee[2] source$1.25
Total taxes and fees$1,884.25

Not the full cost. This total leaves out 1 item, listed below.

Price plus these items: $31,884.25.

Costs not in this total

  • County administration fees. Choose your county to include this fee.

Estimate for a $30,000 vehicle.See all sources

Sources

4 pages, 2 secondary, all opened Oct 24, 2026

  1. [1]
    Sales and use tax online guideSupports: State sales tax rate, Trade-in rule, Local tax
    Idaho State Tax CommissionOpen page
  2. [2]
    Vehicle registrations (fees and county admin fees)Supports: Title, Registration (passenger vehicle, newer), Registration (passenger vehicle, middle age), Registration (passenger vehicle, 7 years or older), Emergency medical services fee, Electric vehicle fee (all-electric), County administration fees
    Idaho Transportation DepartmentOpen page
  3. [3]
    Trade-ins, trade-downs and barterSupports: Trade-in rule
    IDAPA 35.01.02.044Secondary sourceOpen page
  4. [4]
    Vehicle sales, rentals and leasesSupports: Tax paid to another state
    IDAPA 35.01.02.106Secondary sourceOpen page

What changed

1 change to Idaho's numbers or rules

  1. Oct 24, 2026Added state with the 6% sales tax after trade-in, credit for tax paid to another state, title, registration by vehicle age, the electric vehicle fee, the EMS fee and county administration fees for all 44 counties. The age band edges are marked partly verified.

How Idaho works out this bill

Idaho charges 6% sales tax on a vehicle, with no local sales tax. Registration is paid every year and falls as the vehicle ages, and each county adds its own small administration fees.

The state rate is 6%. A trade-in lowers the price the tax is figured on.

Source: Idaho State Tax Commission - Sales and use tax online guide

If you correctly paid sales tax to a dealer in another state, you get a credit against the Idaho tax.

Source: IDAPA 35.01.02.106 - Vehicle sales, rentals and leases

The yearly registration fee drops as the vehicle gets older, and electric vehicles pay an added yearly fee.

Source: Idaho Transportation Department - Vehicle registrations (fees and county admin fees)

Each county sets its own administration fee for registration and for titles on top of the state fees.

Source: Idaho Transportation Department - Vehicle registrations (fees and county admin fees)

All figures this calculator uses (9)

Common questions

Does a trade-in lower the sales tax in Idaho?

Yes, a trade-in allowance reduces the taxable price when it is part of the same transaction.

Source: Idaho State Tax Commission - Sales and use tax online guideIDAPA 35.01.02.044 - Trade-ins, trade-downs and barter

Does Idaho give credit for tax paid in another state?

Yes, a credit is allowed when sales tax was correctly paid to a dealer in another state.

Source: IDAPA 35.01.02.106 - Vehicle sales, rentals and leases

How often is this page updated?

The data on this page was last reviewed on Oct 24, 2026. Pages get a changed-page check each month and a full re-verification each January and July.

How we check numbers

Worked examples

Gas vehicle, no trade-in

$20,000 vehicle

$1,284.25

Idaho sales tax (6%) $1,200.00, Title $14.00, Registration (passenger vehicle, newer) $69.00, Emergency medical services fee $1.25.

Not included yet: County administration fees.

Gas vehicle with a trade-in

$30,000 vehicle, $8,000 trade-in

$1,404.25

Tax is charged on $22,000, so the trade-in saves $480.00 in sales tax.

Not included yet: County administration fees.

Electric vehicle

$45,000 vehicle

$2,924.25

Idaho sales tax (6%) $2,700.00, Title $14.00, Registration (passenger vehicle, newer) $69.00, Emergency medical services fee $1.25, Electric vehicle fee (all-electric) $140.00.

Not included yet: County administration fees.

Each example runs the same calculation as the calculator above. Local tax and county fees are left out unless the example says otherwise, because they depend on where you live. Estimates only.

What this calculator does not cover

  • County administration fees for registration and title are added once you pick your county.
  • A plug-in hybrid pays an extra $75 a year, which is not included.
  • Personalized and specialty plate fees are not included.